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    • 专利摘要:
    SET, AND METHOD. An assembly may include a housing that includes an opening, a hole that extends from the opening along an axis, and a sealable opening; and a cable feed-in body including a first axial end, a second axial end, a hole extending between the axial ends, a tapered hole surface and a sealable opening, the cable feed-in body being partially disposed. inside the housing bore to locate the second axial end at an axial distance from the housing opening that exceeds an axial distance from the sealable housing opening to at least in part form an overlapping seal between the cable feed body and the bore of the accommodation. Various other devices, systems, methods, etc., are also disclosed.
    公开号:BR102013012436B1
    申请号:R102013012436-2
    申请日:2013-05-20
    公开日:2021-04-20
    发明作者:Joseph Allan Nicholson
    申请人:Schlumberger Technology B.V.；
    IPC主号:
    专利说明:

    FUNDAMENTALS
    [0001] Electrically coupled downhole equipment has a cable or cables to supply electrical energy, for example, to turn on the equipment, control the equipment, receive signals from the equipment, etc. Downhole environments can be harsh, for example physically (eg consider temperature and pressure) and chemically (eg consider chemical corrosion). Examples of downhole equipment include downhole heaters and downhole pumps. As an example, a downhole heater can be installed at the bottom of a wellbore to increase the temperature of fluid coming from the reservoir (eg to reduce fluid viscosity). As another example, a downhole heater can be installed as a heater treater, for example, to help with the elimination of paraffin deposits, hydrate plugs, etc. As an example, a downhole pump can be an electric submersible pump (the acronym for Electric Submersible Pump, ESP) to achieve artificial elevation of the fluid.
    [0002] To receive energy for heating or pumping, a downhole heater or pump is connected to a cable or cables. In some cases, the length of such cable or cables may be on the order of a few kilometers. A cable can also include one or more lengths of conductor joined over the cable. For example, where the cable includes three conductor cores to power a pump motor, a motor lead extension (MLE) can be spliced over each of the conductor cores.
    [0003] As an example, one or more packers can be installed in the downhole, eg, uphole from a location of downhole equipment such that a cable or cables pass or pass through the packer. As an example, an embodiment may include a packer that isolates an annular space from a production duct (eg to allow controlled production, injection, treatment, etc.) where a heater or pump is installed at the bottom of the well from the packer. Such a packer may include features to secure the packer against a case, facing wall, etc. (eg, consider a sliding arrangement), features to create a fluid seal to insulate the annular space (eg, consider an expandable elastomeric element or other arrangement) and features to create a fluid seal for each cable that can pass through the packer.
    [0004] Various technologies, techniques, etc., described here pertain to cable and coupling mechanisms, for example, to connect one or more pieces of equipment that can be positioned in a borehole, a well, or other environment. SUMMARY
    [0005] An assembly may include a housing that includes an opening, a hole extending from the opening along an axis and a sealable opening; and a cable feed-in body including a first axial end, a second axial end, a hole extending between the axial ends, a tapered hole surface and a sealable opening, the cable feed-in body being partially disposed. inside the housing bore to locate the second axial end at an axial distance from the housing opening that exceeds an axial distance from the sealable housing opening to at least in part form an overlapping seal between the cable feed body and the bore of the accommodation.
    [0006] An assembly may include an above well body portion and a downhole body portion, the body portions being connectable to form a cavity therein, where the above well body portion includes an above well bore and a surface of tapered borehole above and where the downhole body portion includes a downhole bore and a downhole tapered bore surface; an insulating block disposed within the cavity, wherein the insulating block includes a through hole axially aligned with the downhole above the downhole body portion and the downhole hole of the downhole body portion; and a boot sealing component disposed in the through hole of the insulating block where the boot sealing component includes an uphole sleeve for closing an uphole conductor, a downhole sleeve for closing a downhole conductor, and a conductor coupling to electrically couple the uphole conductor and the downhole conductor.
    [0007] A method may include providing a cable with a compression nut and ferrule; providing a housing with a direct cable feed body with a sealable opening; inserting the cable into the cable feeder body; and twisting the compression nut to the cable feed body to apply force to the ferrule to form a seal. Various other devices, systems, methods, etc., are also disclosed.
    [0008] This summary is provided to introduce a variety of concepts which are described further below in the detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of the claimed subject matter. BRIEF DESCRIPTION OF THE DRAWINGS
    [0009] The characteristics and advantages of the described implementations can be more easily understood by referring to the following description taken in conjunction with the attached drawings. Fig. 1 illustrates an example of an electric submersible pump (ESP) system that includes a variable speed drive (VSD). Fig. 2 illustrates an example of a cable system. Fig. 3 illustrates an example of a cable. Fig. 4 illustrates an example of a connector head or housing for connecting one or more cables. Fig. 5 illustrates an example of a cable connector assembly in a mated state. Fig. 6 illustrates a subassembly of the cable connector assembly of Fig. 5. Fig. 7 illustrates the cable connector assembly of Fig. 5 in an uncoupled state. Fig. 8 illustrates an example of a cable connector assembly in an uncoupled state with respect to a packer. Fig. 9 illustrates a portion of the cable connector assembly of Fig. 8. Fig. 10 illustrates a portion of the cable connector assembly of Fig. 8. Fig. 11 illustrates another example of a cable connector assembly. Fig. 12 illustrates the cable connector assembly of Fig. 11 and a subassembly thereof. Fig. 13 illustrates a portion of the cable connector assembly of Fig. 11 and a subassembly thereof; and Fig. 14 illustrates an example of a method. DETAILED DESCRIPTION
    [00010] The following description includes the presently contemplated best way to practice the described implementations. This description is not to be taken in a limiting sense, but is meant only for the purpose of describing the general principles of implementations. The scope of the described implementations must be determined with reference to the claims issued.
    [00011] Electric submersible pumps (ESPs) can be employed for any of a variety of pumping purposes. For example, where a substance does not readily flow in response to existing natural forces, an ESP can be implemented to artificially elevate the substance. Commercially available ESPs (such as REDATM ESPs marketed by Schlumberger Limited, Houston, Texas) can find use in applications that include, for example, pump rates in excess of 4,000 barrels per day and lifts of 12,000 feet or more.
    [00012] A downhole heater can be deployed for any of a variety of purposes. For example, where a substance does not readily flow in response to existing natural forces, a downhole heater can be implemented to provide thermal energy, which can act to reduce fluid viscosity, change the state of a substance, etc. A downhole heater can be a heater treater, for example, to help with the removal of paraffin deposits, hydrate plugs, etc.
    [00013] An ESP or other downhole equipment may include one or more electrically energized components. As an example, a motor can be driven through a three-phase power source and a power cable or cables that provide a three-phase AC power signal. The voltage and current levels of a three-phase AC power signal supplied by a power source to an ESP motor can be, for example, on the order of kilovolts and tens of amps.
    [00014] As an example, an ESP may include one or more sensors (eg meters) that measure any of a variety of phenomena (eg temperature, pressure, vibration, etc.). One commercially available sensor is the Phoenix MultiSensorTM marketed by Schlumberger Limited (Houston, Texas), which monitors inlet and discharge pressures; absorption, engine and discharge temperatures; and vibration and current leakage. An ESP monitoring system can include a supervisory control and data acquisition system (SCADA). Commercially available inspection systems include the espWatcherTM and LiftWatcherTM inspection systems marketed by Schlumberger Limited (Houston, Texas), which provide data communication, for example, between a production team and well/field data equipment (for example, with or without SCADA installations). Such a system can issue instructions to, for example, start, stop or control the ESP speed through an ESP controller.
    [00015] As for the energy to power a sensor (eg an active sensor), circuit associated with a sensor (eg an active or a passive sensor), or a sensor and circuit associated with a sensor, an energy signal DC can be supplied via an ESP cable and available at a Y-point of an ESP motor, for example, powered by a 3-phase AC power signal.
    [00016] As an example, a power cable can provide for power distribution to an ESP, other downhole equipment, or an ESP and other downhole equipment. As a power cable it can also provide data transmission to downhole equipment, from downhole equipment or to and from downhole equipment.
    [00017] Regarding issues associated with ESP operations, a power supply can experience unbalanced phases, voltage spikes, presence of harmonics, lightning, etc., which can, for example, increase the temperature of a motor ESP, from a power cord, etc.; an engine controller may experience issues when subjected to extreme circumstances (eg high/low temperatures, high humidity, etc.); an ESP motor can be short-circuited due to debris in its lube oil, water penetration into its lube oil, noise from a transformer that results in wear (eg insulation, etc.), which can lead to contamination of the lubricant; and a power cable may experience one or more issues (eg, short circuit or otherwise) due to electrical discharge in the insulation surrounding one or more conductors (eg, more likely at higher voltages), poor manufacturing quality ( eg insulation, shell, etc.), water penetration, noise from a transformer, direct physical damage (eg crushing, cutting, etc.) during running or lure operations), chemical damage (eg , corrosion), deterioration due to high temperature, current above a design limit resulting in increased temperature, electrical voltages, etc.
    [00018] Some of the foregoing examples of the questions may be pertinent to the operation of other types of downhole equipment. For example, cable related issues may apply to a downhole heater installation. In several examples, cables and coupling mechanisms, for example, for connecting one or more pieces of equipment that can be positioned in a borehole, well, or other environment, are illustrated or described in relation to an ESP installation; noting that such cable and coupling mechanisms can be used for other types of equipment.
    [00019] Fig. 1 shows an example of an ESP 100 system as including a net 101, a well 103 disposed in a geological environment, a power source 105, an ESP 110, a controller 130, a motor controller 150 and a VSD unit 170. Power source 105 may receive power from a power grid, an on-site generator (eg, natural gas powered turbine), or other source.
    [00020] In the example of Fig. 1, the well 103 includes a wellhead that may include an obstruction (e.g., an obstruction valve). For example, well 103 may include a plug valve to control various operations such as to reduce the pressure of a high pressure fluid in a closed borehole to atmospheric pressure. Adjustable shutoff valves may include valves constructed to resist wear due to high velocity, solids laden fluid flowing through restrictor or seal elements. A wellhead can include one or more sensors such as a temperature sensor, a pressure sensor, a solids sensor, etc.
    [00021] The ESP 110 includes cables 111, a pump 112, gas handling features 113, a pump inlet 114, a protector 115, a motor 116, and one or more sensors 117 (eg temperature, pressure, leakage current, vibration, etc.). Well 103 may include one or more sensors from well 120, for example, such as the commercially available OpticLineTM or WellWatcher BriteBlueTM sensors marketed by Schlumberger Limited (Houston, Texas). Such sensors are fiber optic based and can provide real-time temperature detection, for example, in steam-assisted gravity drainage (SAGD) or other operations (eg, steam-assisted gravity drainage, SAGD). improved oil recovery, etc.). With respect to SAGD, as an example, a well may include a relatively horizontal portion. Such a portion can collect heated heavy oil in response to steam injection and an ESP can be positioned horizontally to intensify the heavy oil flow.
    [00022] In the example of Fig. 1, the controller 130 may include one or more interfaces, for example, for receiving, transmitting or receiving and transmitting information with the motor controller 150, a VSD unit 170, the power source 105 (for example, a gas powered turbine generator, a power company, etc.), the network 101, equipment in well 103, equipment in the other well, etc.
    [00023] As shown in Fig. 1, controller 130 can include or provide access to one or more modules or structures. In addition, controller 130 may include features of an ESP engine controller and optionally supersede ESP 150 engine controller. For example, controller 130 may include the UniConnTM 182 engine controller marketed by Schlumberger Limited (Houston, Texas). In the example of Fig. 1, controller 130 can access one or more of the PIPESIMTM 184 structure marketed by Schlumberger Limited (Houston, Texas), the ECLIPSETM 186 structure marketed by Schlumberger Limited (Houston, Texas) and the PETRELTM 188 structure marketed by Schlumberger Limited (Houston, Texas).
    [00024] In the example of Fig. 1, the motor controller 150 may be a commercially available motor controller such as the UniConnTM motor controller. The UniConnTM engine controller can connect to a SCADA system, the espWatcherTM inspection system marketed by Schlumberger Limited (Houston, Texas), etc. The UniConnTM motor controller can interface with fixed speed drive controllers (fixed speed drive, FSD) or a VSD drive such as the VSD 170 drive.
    [00025] For FSD controllers, the UniConnTM motor controller can monitor ESP system three-phase currents, three-phase surface voltage, supply voltage and frequency, ESP rotation frequency and leg ground, power factor and motor load.
    [00026] For VSD units, the UniConnTM motor controller can monitor VSD output current, ESP running current, VSD output voltage, supply voltage, VSD input and VSD output power, output frequency. VSD, drive load, motor load, ESP running three-phase current, three-phase VSD input or output voltage, ESP rotation frequency, and leg ground.
    [00027] In the example of Fig. 1, the ESP 150 motor controller includes several modules to handle, for example, backwards rotary movement of an ESP, counter rotation of an ESP, flow of an ESP and gas lock of an ESP . As mentioned, motor controller 150 may include any of a variety of features, additionally alternatively, etc.
    [00028] In the example in Fig. 1, the VSD 170 can be either a medium voltage drive (MVD) or a low voltage drive. , LVD). For an MVD, a VSD unit can include an integrated transformer and control circuit. As an example, the VSD 170 unit can be powered with a voltage of about 4.16 kV and control a motor as a load with a voltage of about 0 V to about 4.16 kV. As an example, an MVD VSD unit can work using voltage levels up to about 6 kV. In contrast, an LVD can operate a three-phase, multilevel PWM over a range of about 0V at an input voltage level, which can be, for example, about 380V or, for example, up to about 480 V. As an example, a range for an MVD can be from about 1 kV to about 6 kV.
    [00029] A VSD 170 unit may include commercially available control circuitry such as the MVD SpeedStarTM control circuit marketed by Schlumberger Limited (Houston, Texas). The MVD SpeedStarTM control circuit is suitable for indoor or outdoor use and can include a visible fused disconnect switch, pre-charge circuit, and 175 sine wave output filter (eg integral sine wave filter). for integral sine wave filter, ISWF) custom to control and protect the ESP circuit (eg an ESP motor).
    [00030] In the example of Fig. 1, a VSD 170 unit is shown along with a graph of a sine wave (eg achieved through the sine wave output filter 175) and modules that can provide vibration responsiveness, vibration responsiveness. temperature and management to reduce mean time between failures (mean time between failures, MTBFs). As an example, the VSD 170 unit can be rated with an ESP to provide about 40,000 hours (5 years) of operation at a temperature of about 50°C with a load of about 100%. The VSD 170 unit can include surge protection and weight relief (eg one phase protection circuit). As for leg ground monitoring or water intrusion monitoring, such types of monitoring can indicate whether corrosion is or has already occurred. Additional monitoring of power quality from a source, to a motor, in a motor, can occur for one or more circuits or characteristics of a controller.
    [00031] Although the example in Fig. 1 shows an ESP with centrifugal pump stages, another type of ESP can be controlled. For example, the ESP may include a hydraulic diaphragm electric submersible pump (HDESP), which is a positive displacement, double acting diaphragm pump with a downhole motor. HDESPs find use in low-liquid rate coal bed methane wells and other shallow oil and gas wells that can perform artificial lift to remove downhole water. An HDESP can be set above or below boreholes and work in wells that are, for example, less than approximately 2,500 feet deep and that produce less than approximately 200 barrels per day. HDESPs can handle a wide variety of liquids and, for example, up to approximately 2% sand, coal, and fine particles and H2S/CO2. With respect to construction materials, materials such as those used in commercially available REDATM or other submersible pumps for use in the oil and gas industry can be used.
    [00032] Failure of a cable, a cable coupling assembly, or electrically coupled downhole equipment can cause an operator to incur various costs such as costs for removal and replacement as well as downtime. While a cable can span a considerable length, it can be exposed to a variety of different environments, some of which can change over time. Forces that impact a cable, whether mechanical forces, electrical forces, temperature-related forces, fluid pressure-related forces, or chemical-related forces, can also impact a cable coupling assembly. Data collected from a particular region indicates that as much as half of the failures for ESPs employed were due to the power distribution system and not due to individual ESP motors or pumps. In several examples, techniques and technologies for cables and cable coupling assemblies can help eliminate points of failure, reduce human errors on site, increase the speed of installation in the field, etc. Such techniques and technologies can increase the MTBF of downhole equipment. As an example, a target operating life of approximately a decade or more can be achieved for a power distribution system.
    [00033] As an example, a power distribution system may include: metal sheathed cable (eg to resist downhole fluids and gases); a pressure rated motor direct feed system (eg to insulate the motor from the effects of sealing failures at the cable interface); a metal-to-metal sealing system that can be optionally testable on multiple interfaces; a packer penetration system that can be directly attached to a packer (eg to minimize on-site installation); and a cable termination system that includes tools to stamp and optionally test the seal.
    [00034] Fig. 2 shows an example of a cable system 200 that includes: a top surface dry-mate connector 210; a direct pressure feed chuck 220; a 232 upper field-installable drymate connector; a 234 cable (for example, with three conductor cables in it); a 236 lower field-installable dry-mate connector; one packer 300 direct feed set; upper cable guides 410-1, 410-2 and 410-3; cables 420; cable guides 440-1, 440-2 and 440-3; and 460-1, 460-2, and 460-3 motor feeder cable cases that attach to a 500 penetrator block (eg, a metal penetrator block, a metal housing, etc.).
    [00035] Various portions of the cable system 200 are described below. For example, Fig. 3 shows a detailed view of an individual cable 440, Fig. 4 shows an enlarged view of the penetrator block 500 and cable couplings, Fig. 5 shows a cross-sectional view of the individual cable 440 coupled via a mechanism Fig. 6 shows a perspective view of a sub-assembly and a cut-away view thereof, Fig. 7 shows a cut-away view of the individual cable 440 before coupling to the penetrator block 500, Fig. 8 shows the assembly of direct feed packer 300 in an uncoupled state, Fig. 9 shows a cut-away view of a portion of the direct feed assembly of packer 300 in a partially coupled state with respect to a lower union or connecting unit 380, and Fig. 10 shows a cut-away view of the lower union or connecting unit 380 of the direct feed assembly of packer 300. Figs. 11, 12 and 13 show another example of a 1500 penetrator block (eg a cylinder head block) and coupling mechanism for coupling the cables thereto. Fig. 14 shows an example of a method 1400, for example, which may include the use of multiple cables, assemblies, subassemblies, etc. described here.
    [00036] As mentioned, Fig. 3 shows an example of an individual cable 440, in a perspective view with several exposed layers and in a cross-sectional view along a plane having a line A-A. Cable 440 includes a conductor 442 (eg, a conductive core), an insulating layer 444, a polymer layer 446 (eg, flourinated ethylene propylene, FEP) as a copolymer of hexafluoropropylene and tetrafluoroethylene, tetrafluoroethylene (Tetrafluoroethylene, TFE), etc.) and a metal layer 448, which can be considered an outer jacket for the individual cable 440.
    [00037] As an example, the metal layer 448 can be seam welded and then cold reduced onto a subassembly of internal components 442, 444 and 446, for example, to trap and support them within a tube formed by a metal layer 448. As an example, formed metal layer 448 can resist external pressure and be made of a corrosion resistant material such as INCONEL® alloy 625 or alloy 825 (sold by Specialty Materials Corporation, New Hartford, NY) or a super duplex stainless steel (eg a double stainless steel). By cold reducing the metal layer 448, the surface finish and seam weld can be sized to desired tolerances. As an example, additional surface polishing can be performed to achieve the desired sealing surface characteristics.
    [00038] As an example, the individual cable 440 may be assembled with one or more other cables in the form of a flat package 441 or another shape as a circular package 443. The flat package 441 and the circular package 443 may include one or more layers, for example, as an outer armor shield layer.
    [00039] As an example, conductor 442 may be copper, which may be stranded or solid to carry voltage and current to a pump motor, heater, etc. As an example, insulating layer 444 can be provided directly over conductor 442 and be made of a material such as FEP, PTFE, polyether ether ketone, PEEK. , or another type of polymer poly aryl ether ketone (PAEK), etc., to withstand operating voltage, system requirements, etc. The polymeric layer 446 can be provided directly to the insulating layer 444 and function as a bed liner, which can be flooded or assembled to allow space for the thermal expansion of materials within the metal layer 448. As an example, the polymeric layer 446 can provide a soft cushion between the insulation layer 444 and the metal layer 448, protecting the insulation layer 444 from internal defects or stains within the metal layer 448, for example, such as seam weld beads or finish effects. of pipe cutting.
    [00040] As an example, where individual cable 440 is packaged with one or more other cables, they may optionally be encapsulated in a plastic extrusion (eg NYLONTM as marketed by EI du Pont de Nemours & Company, acetal, polypropylene etc. .) or, for example, wrapped in steel in an armor strip of MONEL® alloy (MONEL® alloy marketed by Inco Alloys International, Inc., Huntington, West Virginia).
    [00041] As mentioned, Fig. 4 shows the 500 penetrator block (eg a motor head for an ESP) for connecting one or more cables as one or more of the 440-1, 440-2 and 4403 cables. of Fig. 4, block 500 includes a recess 510 having a bottom surface 515 with three cable openings 520-1, 520-2 and 520-3, for example, with respective holes in penetrator block 500. Below openings 520 -1, 520-2 and 520-3 three sealable ports 525-1, 525-2 and 525-3 are arranged, which can, for example, connect to the sealing spaces inside the penetrator block 500 for loading, testing purposes , etc. by fluid distribution (eg liquid, gas, etc.). As an example, the pressure test can be carried out using a pressure differential from approximately 5,000 psi to approximately 10,000 psi, for example, depending on the intended use, environmental conditions, etc.
    [00042] In the example of Fig. 4, the connectors can be dispersed around a motor head in a convenient way so as to clean the inner motor shaft assembly and allow the outer cable to flow freely into the supply. direct (eg with minimum bend radius). As an example, cables 440-1, 440-2 and 440-3 can go straight into cable openings 520-1, 520-2 and 520-3 (for example, without bending with respect to recess 510 of indenter block 500 ).
    [00043] In the example of Fig. 4, the individual cables 440-1, 440-2 and 440-3 are coupled via respective components 460-1, 460-2, 460-3, 474-1, 474-2 and 474 -3 which are at least partially received through the respective ones of cable openings 520-1, 520-2 and 520-3. As shown, individual cables 440-1, 440-2 and 440-3 also mate with components 560-1, 560-2, 560-3, 590-1, 590-2 and 590-3. Various components shown in Fig. 4 are further illustrated and described with respect to Figs. 5 and 6.
    [00044] Fig. 5 shows an example of a cable connector assembly in a mated state with respect to an individual cable 440 and an individual cable opening 520 of the penetrator block 500 (for example, which may be part of a housing of motor) where the opening 520 leads to a hole 521, which may include various radii, diameters, etc. through its axial length. A cylindrical coordinate system is shown as having a z axis for individual cable 440, individual cable opening 520, hole 521, etc. as well as radial and azimuth dimensions r and , respectively. As can be appreciated, any feature of the cable connector assembly can be defined, described, etc., with respect to the cylindrical coordinate system. For example, a sealable opening 465 of a cable feedthrough body 460 may be defined with respect to the z, r and coordinates, the sealable opening 525 of the penetrator block 500 may be defined with respect to the z, r and etc. coordinates. Furthermore, spatial relationships can be specified using z, r and .
    [00045] As shown in the example in Fig. 5, the cable feedthrough body 460 can be fitted to the penetrator block 500 for cable receipt 440 through an opening in one end 461 of the cable feedthrough body 460 where the end opening 461 leads to a hole 462 of cable feed body 460, which may include a spoke hole surface, variable diameter, etc. through its axial length. In such an example, the cable 440 may include various components fitted to it prior to insertion into the cable feed body 460. For example, to form the overlapped seal with the cable feed body 460, the cable 440 may be fitted with bushing 472 with a rolled section, bushing 476 that seats sealing elements 477 and 479 to which the rolling section of bushing 472 can physically attach, and a ferrule 480 that includes an annular groove 485, for example, which may allow some amount of deformation of ferrule 480 and allow fluid communication in approximately a 360 degree mode (consider test fluid introduced through an opening 465 in cable feed body 460). As an example, the rolled section of bushing 472 may allow the extraction of bushing 476 through an adhesive force that bushing 472 applies to bushing 476. Also, as shown, metal layer 448 and polymer layer 446 of cable 440 they terminate at an axial point beyond which insulating layer 444 extends covering conductor 442. Still further, insulation layer 444 terminates at another axial point beyond which conductor 442 extends axially. As shown, a contact pin 445 includes a cylindrical wall that forms the socket in which one end of the conductor 442 is received and fixedly secured, for example, by corrugating the cylindrical wall of the contact pin 445 or by other fastening technology. .
    [00046] As shown in the example of Fig. 5, the overlapping seal is formed at least in part by bushing 476 and ferrule 480 surrounding the metal layer 448 of cable 440, which form seals with an inner surface of the supply body cable feed 460, for example, in part through sealing elements 477 and 479. As an example, bushing 472 may be a bushing compression nut adjustable to a specific torque value to apply an axial compression force directly against the transferable bushing 476 to the ferrule 480, which includes a tapered outer diameter fitting within the tapered bore surface 469 of the cable feeder body 460 (e.g., where the tapered bore surface 469 forms a neck in the hole 462). Where the ferrule 480 is made of metal and the cable feed body 460 is made of metal, a metal-to-metal-to-metal compression seal can be formed by the ferrule 480 against the tapered bore surface 469 of the cable feed body 460 and against an outer surface of metal layer 448 of cable 440.
    [00047] As shown in Fig. 5, the metal layer 448 and the polymeric layer 446 of the cable 440 terminate at an termination point located axially after the tapered bore surface 469 (for example, and the neck extending from it thence) in hole 462 of the cable feed body 460. The various seals formed axially above the termination point of the metal layer 448 and the polymeric layer 446 act to prevent the intrusion of environmental fluid and contact with the exposed insulation layer 444, which extends axially towards the cable opening 520 after the termination point.
    [00048] As shown, the sealable opening 465 is located radially externally from the ferrule 480. The various sealing elements 477 and 479 together with the compression seal interfaces formed by the ferrule 480, as seated with respect to the various components that form the overlapping seal, can be tested through the sealable opening 465, for example, by introducing a non-corrosive test fluid (eg, liquid, gas, etc.) with a desired amount of fluid pressure (consider the pressure in a range of approximately 5,000 psi to approximately 10,000 psi).
    [00049] As shown in the example of Fig. 5, the insulating layer 444 and conductor 442 of cable 440 are received through an opening at one end 452 of an elastomeric coupling component 450 disposed within the cable feed-through body 460. End 452 of coupling member 450 may be an end of a tubular sleeve portion of coupling member 450, which, formed of an elastomeric material, can be stretched to form a snap-in latch seal over a portion. of the cable 440. As an example, the tubular sleeve portion of the coupling member 450 may include surface features (e.g., protrusions, ribs, grip teeth, etc.) that may radially intrude into the insulating layer 444 of the cable 440. As an example, coupling component 450 may be made of a material such as a rubber, synthetic rubber (eg, VITON® synthetic rubber as marketed by EI du Pont de Nemours & Company, Wilmington, Delaware), silicone rubber, EPDM (eg where E refers to ethylene, P to propylene, D to diene and M refers to a classification in the ASTM D standard -1418; for example, ethylene copolymerized with propylene and a diene), etc. As shown, coupling member 450 receives and couples contact pin 445, which, as mentioned, can be bent or otherwise secured to a portion of conductor 442 that extends axially beyond an insulating layer termination point. 444 of cable 440. As shown, contact pin 445 extends from conductor 442 of cable 440 and axially into opening 520 of penetrator block 500 where it joins another mating structure 540 that includes a mating conductor 550.
    [00050] In the example of Fig. 5, the coupling structure 540 is made of an insulator that partially surrounds the coupling conductor 550. The coupling conductor 550 includes an end opening for receiving the contact pin 445 as attached to the conductor. 442 of cable 440 and another end opening for receiving another contact pin 585 as attached to another conductor 592 of another cable 590. In the example of Fig. 5, a contact strip 491 is shown as being disposed between the contact pin 445 and mating conductor 550 and another mating band 591 are shown as being disposed between contact pin 585 and mating conductor 550. As an example, one or both of contact bands 491 and 591 may have louvers. As an example, one or both of the contact bands 491 and 591 can be made of copper and optionally copper and beryllium. As an example, one or both of the 491 and 591 contact bands can be gold plated (consider, for example, gold plating on a band that includes copper and beryllium). As an example, a strip 1493 (eg a clamping strip) may be received at one end of the coupling structure 540, for example, to help secure the contact pin 485 and to hold the contact strip 491 within the coupling conductor 550; noting that such strip 493 may be provided for the other end of coupling structure 540.
    [00051] In the example of Fig. 5, between the end openings, the coupling conductor 550 includes a neck around which the coupling frame 540 and bushing 530 are arranged where bushing 530 can assist with the axially locating of the coupling frame 540 in bore 521 of housing 500. As shown, bushing 530 is received by coupling frame 540 and is disposed between an end 466 of feedthrough cable body 460 and an end 574 of a coupling member 570 for cable 590. As shown, one end 454 of coupling member 450 terminates axially in bushing 530, which may include a shape to help alleviate electrical stresses (e.g., which may occur as current flows in cable 440 ). As an example, bushing 530 may include axial extensions and a ring portion disposed therebetween, which, for example, can be welded to end 466 of feedthrough cable body 460 (consider, for example, electron beam welding to secure bushing 530 at least partially in an opening of end 466 of feeder cable body 460).
    [00052] In the example of Fig. 5, the coupling component 450 and the coupling component 570 can be configured to form a boot seal (for example, or boot seals). As shown, a tubular sleeve portion of coupling component 570 can attach to an insulating layer 594 of cable 590 at one end (see, for example, coupling component description 450) and receive coupling structure 540 at the other. far end. Likewise, as mentioned, coupling member 450 may include a tubular sleeve portion that can engage with insulating layer 444 of cable 440 at one end and receive coupling structure 540 at the other end. As an example, symmetry may exist around a plane r, central to the coupling structure 540, for example, for receiving contact pins 445 at one end and for receiving contact pin 585 at the other end (for example, where the coupling structure 540 includes two female sockets for receiving the respective male pins) or, for example, in another arrangement of sockets and pins.
    [00053] As an example, coupling structure 540 may include one or more features of a contact pin assembly described in US Patent Application Publication US 2009/0047815 A1, which is incorporated by reference herein (inventor Nicholson and transferee Schlumberger Technology Corporation). For example, publication '815 describes an integrally molded tension control ring. As an example, bushing 530 can be or include a tension control ring. As mentioned, soldering as an electron beam soldering (EB) can be applied to connect the 530 bushing to the 460 cable feedthrough body.
    [00054] Referring again to the cable opening 520 in the penetrator block 500, it includes an internal shoulder 529 disposed at an axial depth to form a hole with a cross section sufficient to accommodate a shoulder 468 of the direct cable feed body 460 which it also accommodates a bushing 474 that can be threaded, for example, to engage the threads of the penetrator block 500 and to lock the cable feed body 460 therein. As shown, the cable feeder body 460 must have an annular seat (e.g., a groove, etc.) to seat a sealing member 463 prior to an axial position of the sealable opening 525 of the penetrator block 500. As an example, fluid can be introduced at a desired pressure via the sealable opening 525 to test a seal formed by the sealing element 463, for example, to determine the risk of environmental fluid entering via the cable opening 520 and passing via the bushing 474, the shoulder 468 and the sealing element 463. Also shown in the example of Figure 5 is another sealing element 465 disposed in another annular seat (e.g., a groove, etc.) of the feedthrough cable body 460. Arranged between the two elements Of seals 463 and 465, the cable feeder body 460 includes a tapered surface that can form a metal-to-metal compression seal against a tapered surface of bore 521 of penetrator block 500 (e.g., ca. engine headstock, etc.). In such an example, bushing 474 can be torqued to apply sufficient axial force to form a seal between the tapered surfaces (eg, a metal-to-metal cone seal, etc.). As an example, sealable opening 525 can be used to test such a seal, as well as seals formed by sealing elements 463 and 465. As an example, multiple sealing elements can be arranged, for example, in an annular seat, one seal per spring can be seated in an annular seat, etc. For example, instead of the single sealing element 465, multiple sealing elements can be used, a spring seal can be used, etc. When the penetrator block 500 can be part of a housing, such as an engine housing, the type of gasket formed by the various features is intended to prevent such fluid leakage, as the fluid may damage or otherwise impair the operation of one or more components housed within the housing (eg, or connected to it).
    [00055] Fig. 6 shows a perspective view and a sectional view (along a line BB) of a subassembly that includes the cable feed body 460, as well as the coupling component 450, the bushing 530 , the coupling structure 540 and the coupling conductor 550 disposed thereon. Also shown in Fig. 6 is a locating key 464, for example, to help ensure proper orientation of the cable feeder body 460 when it is inserted into an opening of a penetrator block (e.g. block 500, a motor head, etc.).
    [00056] In perspective view, bushing 474 is translatable in an axial direction along cable feeder body 460, for example, to contact shoulder 468, of which locating key 464 extends radially outward of the same. As indicated, the sectional view is along a plane with a B-B line. To more clearly illustrate an example of the contact strip 491, the cutaway view is shown without the contact pin 445 (for example, the end of the conductor 442 of the cable 440 is shown together with its insulating layer 444 as locked by the sleeve portion. tubular coupling component 450). Also shown in Fig. 6 is an arrow in a joint between bushing 530 and cable feed body 460 to indicate a region where a weld can be made such as, for example, an electron beam weld to secure the bushing 530 to the cable feed body 460. As shown, bushing 530 includes axial extensions that extend to coupling frame 540 where, for example, a rimmed end of coupling component 450 can also be secured in a groove of bushing 530.
    [00057] Fig. 6 also shows the sealing elements 463 and 465 as being disposed in the respective grooves of the direct cable feed body 460. Between these grooves, the direct cable feed body 460 includes a tapered surface, for example , disposed between an annular surface of a first diameter and an annular surface of a second smaller diameter. As mentioned, such a tapered surface can be pressed against a surface in a hole of a penetrator block, housing, etc., for example, to form a cone seal (eg, a metal-to-metal cone seal). In such an example, a sealable opening may provide the introduction of fluid under pressure to test the integrity of the cone seal (e.g., where the sealable opening provides fluid communication to a region disposed between seal elements 463 and 465 as disposed at a hole in a penetrating block, a housing, etc.
    [00058] Fig. 7 shows the example cable connector assembly of Fig. 5 in an uncoupled state. As shown, the cable feed body 460 is received by the cable opening 520 and secured to the penetrator block 500. In the uncoupled state, the seals within the penetrator block 500 and the cable feed body 460 are formed and optionally testable via the sealable opening 525. For the transition to the coupled state of Figure 5, the cable 440 with various components attached to it (eg bushings, sealing elements, contact pin, etc.) can be inserted into the hole 462 of the body cable feedthrough 460 via the opening at the end 461 of the cable feedthrough body 460 so that the contact pin 445 contacts the coupling conductor 550 to electrically couple the cable 440 to the cable 590, for example, via the mating conductor 550 also being mated to contact pin 585. As shown, such contacts can occur, in part, via contact strip 491 and contact strip 591.
    [00059] As an example, a cable coupling assembly may include a coupling conductor (see, for example, coupling conductor 550) formed from gold-plated copper for low contact resistance and high current transmission. As an example, such a mating conductor can be molded into an insulating material such as PEEK (for example, or another type of poly aryl ether ketone (PAEK) polymer) together with a tension control ring (see, for example, the '815 publication cited above). For example, coupling frame 540 can be made of an insulating material and bushing 530 can be provided as a tension control ring.
    [00060] As an example, a subassembly that includes a direct cable feed body may be equipped with a first boot seal for receiving a power cable and a second boot seal for receiving a cable such as a power cable. motor (eg or heater cable, etc.). As an example, the first boot seal and the second boot seal may receive a respective end of a connected brass tube (see, for example, coupling conductor 550) where each end can lock a crimped contact pin to a conductor of a cable, such as a motor cable (for example, or heater cable, etc.). As an example, the cable feeder body 460 can be equipped with such features (for example, consider coupling components 450 and 570 as each receiving an end portion of a bonded brass tube that can lock a pin. contact).
    [00061] As an example, a contact pin (see eg pins 445 and 585) can be crimpable to form crimp contacts and eg made of copper and gold plated for low contact resistance and avoidance oxidation.
    [00062] As an example, a direct feed cable body can be electron beam welded into position, eg to provide a sealed coupling unit for coupling a cable (eg a power cable).
    [00063] As an example, a metal cone seal feature may be provided at a seal interface to a penetrator block (eg, or housing). As an example, a seal may be provided as another type of metal seal, such as a C-seal or spring seal. As mentioned, a sealable opening can be a test opening to allow pressure tests to be performed on a penetrator block interface for sealing verification. For example, the cable feeder body 460 may form a metal cone seal with an inner surface of a hole in the penetrator block 500. In such example, the sealing element 463 may form a seal at an axial location between the shoulder 468 (eg, or flange) of the cable feedthrough body 460 and—sealable opening 525 indenter block 500, which provides a fluid communication passage for the hole in the indenter block 500.
    [00064] As an example, the cable feeder body 460 of Fig. 7 when attached to the penetrator block 500 can be provided with a tamper proof cap (eg plastic or other material) to prevent the entry of contamination and water. For example, the end 461 of the cable feeder body 460 may be equipped with a cover (for example, to cover hole 462). As an example, a motor cable to a motor can be pre-terminated with a contact pin via a ripple contact and a lap compression seal stamped onto the motor cable (eg, adjusted to the correct length using a crimping tool. stamping). In such an example, the necessary termination tasks on site can be minimized, for example, so that an operator just inserts a cable into a respective cable feed-in body and torques a lap compression nut (see, for example, bushing 472) up to a specified torque value (for example, to apply an axial compressive force at interfaces between ferrule 480 and cable 440 and ferrule 480 and cable feed-in body 460).
    [00065] As shown in Figs. 5, 6 and 7, a cable connector assembly may include two overlapping seals, each with a sealable opening, for example, to test the integrity of the seal. While such lap seals may include one or more sealing elements, which may be made of a non-metallic material, lap seals include metal-to-metal contacts that form sealing interfaces. As an example, one of the lap seals can be provided to the assembly in an uncoupled state while the other lap seal is formed by coupling to a coupled state and twisting a compression nut. In such an example, two conductors can be electrically coupled and sealed through an insertion operation and a twisting operation, optionally followed by a pressurized fluid test operation to test an overlap seal or optionally pressurized fluid test operations to test both the overlapping seals.
    [00066] Fig. 8 shows the cable connector assembly 300 in an uncoupled state with respect to a packer 310. As shown in the example of Fig. 8, the packer 310 includes opposite ends 312 and 314 that include openings 313 and 317 and 315 and 319, respectively. Arranged between openings 313 and 315 is a hole 316, which can be for fluid flow (eg production, injection, etc.). For example, a downhole pump from packer 310 can produce a fluid that flows through hole 316 of packer 310 (eg for receipt at an uphole location).
    [00067] A cylindrical coordinate system is shown in Fig. 8 as having a z axis for the individual cable 440, for the coupling structure, etc. as well as radial and azimuth dimensions r and , respectively. As can be appreciated, any feature of the cable connector assembly can be defined, described, etc., with respect to the cylindrical coordinate system.
    [00068] As for the openings 317 and 319 of the packer 310, they provide for the assembly of a receptacle 320 and an extension tube 360 for a connection unit 380. Collectively, these components can be referred to as a direct feed through penetration assembly. from the packer. As an example, with reference to Fig. 2, cable connector assembly 300 may receive through receptacle 320 a plug 236 for one or more conductors and may receive through connection unit 380 one or more cables 410 to be electrically coupled. to one or more conductors associated with plug 236. In the example of Fig. 8, cable connector assembly 300 is configured to electrically connect three conductors associated with a cable package 234 coupled to plug 236 to three conductors associated with individual cables 410-1, 410-2 and 410-3, which can be grouped or formed into a single package (see, for example, flat package 441 and circular package 443 of Fig. 3).
    [00069] Fig. 9 shows a cut away view of a portion of assembly 300 of Fig. 8. Specifically, Fig. 9 shows various components of the direct feed assembly by penetration of the packer from receptacle 320 to extension tube 360 and connection unit 380, which is connected to at least cables 410-1 and 410-2. The cut-away view of Fig. 9 provides a cross-sectional view of a coupling path for cable 4101 and a perspective view of a coupling path for cable 410-2.
    [00070] Receptacle 320 includes a lap seal 334-1 with an associated sealable opening 325-1 as well as mating structure 332-1. The lap seal 334-1 may be formed in part by a ferrule 335-1 which can receive an axial compressive force through torque applied to a compression nut 337-1 fitted to a layer of metal 3581 around a conductor 352 -1, which may include an insulation layer 354-1 and, for example, an elastomer layer disposed between the insulation layer 354-1 and the metal layer 358-1. As an example, ferrule 335-1 may include an n-annular groove that can provide fluid communication around ferrule 335-1, some amount of deformation of ferrule 335-1, etc. (See, for example, ferrule 480 of Figs. 5, 6 and 7).
    [00071] As an example, pressure sealing through the packer 310 can be achieved in part by using a 3-phase dry-mateable electrical connector receptacle (DMEC) such as the receptacle 320, for example, which can be secured or sealed with respect to opening 313 at end 312 of packer 310, for example, using an in-line pipe thread taper seal or national pipe thread. thread, NPT) or, for example, with labyrinth O-seals (eg O-seals), metal seals, etc.
    [00072] To prevent potential gas migration through the receptacle 320, a packer connector may include components that form a gas barrier at a contact pin interface, for example, through the aforementioned overlapping seal. For example, such components may include ferrule 335-1 and compression nut 337-1 along with sealable opening 325-1 for testing the integrity of the formed lap seal. As an example, one or more components can be electron beam welded, optionally without O-seals, which can fail under explosive decompression (ED).
    [00073] As an example, an individual cable 350-1 or 350-2 extending through the packer 310 can be constructed according to the examples in Figs. 3, 5 and 7 in that it includes an outer metal layer. The seal around the outer metal layer can be achieved, at least in part, through metal-to-metal contact using an overlapping compression seal which can be testable.
    [00074] As an example, the packer penetration direct feed assembly can be mounted on the packer 310 to form an integrated assembly before being shipped to the field.
    [00075] As an example, an assembly may include a housing that includes an opening, a hole extending from the opening along an axis, and a sealable opening in fluid communication with the hole and disposed at an axial distance from the opening ( see, for example, axial distance z1 in Fig. 5); and a cable feed-in body including a first axial end, a second axial end, a hole extending between the axial ends, a tapered hole surface and a sealable opening, the cable feed-in body being partially disposed. inside the housing bore to locate the second axial end at an axial distance from the housing opening (see, for example, axial distance z2 in Fig. 5) that exceeds the axial distance of the sealable housing opening to at least partially form a overlap seal between the cable feed body and the housing bore, the overlap seal being testable by introducing a fluid through the sealable opening of the housing. In such an example, the direct cable feed body may include a sealing element mounted thereon, the sealing element being axially disposed between the opening and the sealable opening of the housing. In such an example, the direct cable feed body may include a tapered surface that forms a sealing interface with a tapered surface of the housing bore, the sealing interface being axially disposed between the sealable opening and an axial end of the feed body. cable (for example, the axial end received by the housing).
    [00076] As an example, an assembly may include a coupling structure disposed in a hole in a housing and partially in a hole in a feed-in cable body through an axial end of the feed-in cable body. In such an example, the coupling structure may include a coupling conductor to electrically couple a conductor of a cable disposed in the hole of the direct cable feed body to another conductor. As an example, the other conductor can be a motor conductor or a heater conductor (for example, or yet another type of conductor). As an example, an assembly can include a bushing to locate the mating frame in a hole in a housing.
    [00077] As an example, an assembly may include a coupling component disposed in a hole of a cable feed body where the coupling component includes a sleeve end for lockable receipt of a conductor of a cable and an opposite end. which receives an axial length of a coupling structure to electrically couple the cable conductor to a coupling conductor of the coupling structure.
    [00078] As an example, an assembly may include a cable, a compression nut and a ferrule where a portion of the cable and ferrule are disposed in a hole of a direct cable feed body and where the compression nut is secured to the cable feed body to apply a compressive force between the ferrule and the tapered bore surface of the cable feed body to at least partially form an overlap seal where, for example, the overlap seal can be tested by inserting of a fluid through a sealable opening of the cable feedthrough body.
    [00079] As an example, an assembly may include a contact pin disposed on a conductor of a cable. In such an example, an assembly may include a coupling structure disposed in a hole in a housing and partially in a hole in a feed-in cable body through an axial end of the feed-in cable body where the coupling structure includes a coupling conductor to electrically couple the cable conductor to another conductor (eg a motor conductor, a heater conductor, etc.).
    [00080] As an example, a housing (e.g. a penetrator block) may include a plurality of openings and a plurality of corresponding holes, each of the plurality of openings and holes configured for receiving the respective direct cable feed bodies . As an example, a housing can be a motor housing for an electric submersible pump (ESP), a housing for a heater, etc.
    [00081] Fig. 10 shows a cut-away view of connection unit 380. In the example of Fig. 10, cables 350-1 and 350-2 are shown as being coupled to connection unit 380 at one end and cables 410-1 and 410-2 are shown as being coupled to connection unit 380 at the other opposite end. At both ends of the connection unit 380, compression nuts 381-1, 381-2, 388-1 and 388-2 are disposed around an outer layer of the respective cables and fitted to a respective body portion 391 and 399 of connecting unit 380 where the two body portions 391 and 399 are joined at a joint through a coupling member 397. As shown, the two body portions 391 and 399 can be joined to form a cavity or cavities therein; noting that a plurality of holes in each of the body portions 391 and 399 can be axially aligned to form through holes in the connection unit 380 (e.g., one or more of the through holes configured to connect the respective pairs of electrical conductors).
    [00082] As an example, the body portion 391 may be an uphole body portion while the body portion 399 may be a downhole body portion. As an example, connection unit 380 may be symmetrical or otherwise configurable or agnostic to a location or end of connection 380 well above or at the bottom of the well. As an example, connection unit 380 may be received directly by a packer (eg with suitable connection fittings) or indirectly by an extension tube such as extension tube 360, which is shown in Fig. 9 as receiving by minus part of the body portion 391 of the connecting unit 380.
    [00083] As shown in the example of Fig. 10, each of the body portions 391 and 399 includes holes with openings for receiving the cables. Each of the holes can be configured to receive a respective compression nut. For example, in Fig. 10, compression nuts 381-1 and 381-2 can be twisted to apply an axial compressive force to a respective 383-1 and 385-1 ferrule, eg through an intermediate bushing with a or more sealing elements 382-1 and 389-1. For example, ferrule 383-1 may be disposed around a metal layer 358-1 of cable 350-1, which includes conductor 352-1, insulation layer 354-1, and polymer layer 356-1 ( eg thermoplastics such as FEP, etc.), and contacting the force of an inner surface of a bore of the body portion 391 of the connecting unit 380, which may be a tapered bore surface 389-1 extending into a neck through which cable 350-1 extends axially. In such an example, the axial compressive force applied to ferrule 383-1, due to the ferrule-tapered bore interface, may apply a radial force to cable 350-1 to thereby form the metal-to-metal-to-metal seals ( for example, outer metal layer 358-1 to metal ferrule 383-1 to metal bore surface of body portion 391).
    [00084] In the example of Fig. 10, each of the ferrules 383-1 and 385-1 includes an annular groove 384-1 and 386-1, respectively. In such an example, a passage of a sealable opening 393-1 and 395-1 is disposed axially between a respective one of the annular grooves 384-1 and 386-1 and a respective one of the compression nuts 381-1 and 388-1 to allow for introduction of pressurized fluid, for example, to test the integrity of a respective one of the overlapping seals.
    [00085] In the example of Fig. 10, the connection unit 380 includes a boot sealing component 392-1 and a boot sealing component 392-2, which are both disposed on an insulating block 387 which is axially located. covering the joint between the two body portions 391 and 399 of the connection unit 380. Within the boot seal component 392-1, two conductor couplers 394-1 and 396-1 are seated to electrically couple the conductor 352-1 to the conductor 412-1. In the example in Fig. 10, the 394-1 lead coupler is a female-to-female coupler while the 396-1 lead coupler is a female-to-male coupler such as the 445 contact pin or the contact pin. contact 585 shown in Figs. 5, 6, and 7. In the example of Fig. 10, the boot seal member 392-1 may include sleeve portions where one engages over insulating layer 354-1 of cable 350-1 and the other engages over the insulating layer 414-1 of the cable 410-1. For example, the sleeve portions may include bulges, ribs, etc., to apply pressure to a layer of a cable (e.g., an insulation layer) to secure the cables through pressure points, e.g., to aid in seal.
    [00086] As an example, the 394-1 and 396-1 conductive couplers can be made of copper and include corrugated walls. As an example, the 394-1 and 396-1 conductive couplers can be gold plated. As for the 392-1 boot seal component, it can seal the 394-1 and 396-1 conductive couplers here. The 392-1 boot seal component may be made of an elastomeric material (eg rubber, synthetic rubber, silicone rubber, VITON® synthetic rubber as marketed by EI du Pont de Nemours & Company, Wilmington, Delaware, KALREZ® perfluoroelastomer as marketed by EI du Pont de Nemours & Company, etc.) and can further be insulated by insulating block 387, which can be made of a plastic such as PEEK (eg, or other type of poly polymer. aryl ether ketone (PAEK)).
    [00087] As mentioned, the connection unit 380 includes the two body portions 391 and 399. As an example, a cable end seal assembly can be sealed within one of the body portions 391 or 399 where after the portions 391 and 399 are placed together (eg with the help of coupling member 397) and, for example, welded. As an example, the sealable openings 395-1 and 393-1 may include fluid communication passages for other overlapping seals within the connection unit 380. For example, pressurized fluid supplied to one of the sealable openings 395-1 or 393-1 can be used to test multiple overlapping seals (eg to test three overlapping seals).
    [00088] As an example, an assembly may include an above well body portion and a downhole body portion, the body portions being connectable to form a cavity therein, where the above well body portion includes a well bore above and an uphole tapered bore surface and where the downhole body portion includes a downhole bore and a downhole tapered bore surface; an insulating block disposed within the cavity, wherein the insulating block includes a through hole axially aligned with the downhole above the downhole body portion and the downhole hole of the downhole body portion; and a boot sealing member disposed in the through hole of the insulating block where the boot sealing member includes an uphole sleeve for closing an uphole conductor, a downhole sleeve tube for closing a downhole conductor, and a coupling conductor to electrically couple the uphole conductor and the downhole conductor. In such an example, the assembly may include the uphole conductor and the downhole conductor and a contact pin attached to one of the uphole conductor and the downhole conductor.
    [00089] As an example, the above well body portion may include a sealable test opening for testing the overlapped seal disposed in a bore of the above well body portion and the downhole body portion may include a test opening sealable for testing the overlapping seal disposed in the bore of the downhole body portion.
    [00090] Fig. 11 shows a perspective view and an end view of an example of an assembly 1100 that includes a penetrator block 1500 as including three cables 1440-1, 1440-2 and 1440-3 coupled thereto through coupling assemblies that include 1460-1, 1460-2, and 1460-3 cable feedthrough bodies. As shown, the penetrator block 1500 can be a housing, part of a housing, an engine head, for example, for an ESP engine, etc. Penetrating block 1500 includes opposing axial ends 1501 and 1503 (eg, optionally with connecting flanges) between which a hole 1505 extends. Arranged around hole 1505 (eg, about 180 degrees) are three holes 1521- 1, 1521-2 and 1521-3 for cables as received through their respective feedthrough cable bodies 1460-1, 1460-2 and 1460-3 together with three sealable ports 1525-1, 1525-2 and 1525- 3. Each of holes 1521-1, 1521-2 and 1521-3 has a respective opening 1520-1, 1520-2 and 1520-3 disposed on a surface 1515 of a recessed region which includes recesses 1510-1, 1510-2 and 1510-3. Each of the openings 1520-1, 1520-2 and 1520-3 receives a respective bushing 1474-1, 1474-2 and 1474-3 for attaching a respective body feeder cable 1460-1, 1460-2 and 1460- 3 to the 1500 indenter block.
    [00091] Fig. 12 shows a cut away view of the assembly 1100 of Fig. 11. As shown, the individual cable feed bodies shown as part of a sub-assembly 1105 that includes a cable feed body 1460 in a view at In perspective, it provides a male end connector 1585, for example, which may be received by a female fitting assembly 1595 (for example, for coupling to a motor winding conductor cable). In the example of Fig. 12, subassembly 1105 includes cable feed-through body 1460, which includes a sealable opening 1465, an axially translatable bushing 1474 disposed therein, a shoulder 1468, an end 1466, and a bushing 1530 mounted thereon that can be welded to end 1466, for example, to support and secure mating frame 1540 carrying a mating conductor that electrically couples to male end connector 1585 (e.g., a contact pin).
    [00092] Fig. 13 shows a perspective view of the sub-assembly 1105 along with two other cut-away views, one showing a portion of the penetrator block 1500 and the other showing a portion of the sub-assembly 1105 as well as a perspective view of a contact strip 1491 and a perspective view of bushing 1530. In the example of Fig. 13, the cut-away view of subassembly 1105 shows bushing 1530 fixedly mounted to end 1466 of feedthrough cable body 1460 to support mating structure 1540 as including a cable conductor. 1550 coupling. To more clearly illustrate the 1491 contact strip, the cut-away view is shown without a 1485 contact pin (see, for example, the 1485-2 contact pin in the other cut-away view of Fig. 13) as well as in the perspective view, the contact strip 1491 by itself. As shown, a strip 1493 (eg, a clamp strip) may be received at one end of the coupling structure 1540, for example, to help secure the contact pin 1485 and to hold the contact strip 1491 within the conductor. coupling 1550. The contact strip 1491 as well as various other features shown in Figs. 11, 12 and 13 may include one or more features of corresponding components shown in, for example, Figs. 4, 5, 6 and 7.
    [00093] Fig. 14 shows a method 1400 that includes a supply block 1010 for providing a cable with a compression nut and a ferrule, a supply block 1420 for providing a housing with a cable feed body with an opening sealable, a 1430 insert block for inserting the cable into the cable feed body, a 1440 torque block for twisting the compression nut to the cable feed body apply force to the ferrule to form a seal and a block introducing a pressurized fluid through the sealable opening to test the seal. In such an example, the direct cable feed body may electrically couple one conductor of the cable to another conductor.
    [00094] As an example, a method may include a supply block to provide a cable with a compression nut and ferrule, a supply block to provide a housing with a sealable opening, and a boot sealing component, a block inserts to insert the cable into the boot seal component, a 1040 torque block to twist the compression nut to the housing to apply force to the ferrule to form a seal, and a 1450 insert block to introduce a pressurized fluid through the opening. sealable to test the seal. In such an example, the boot sealing component may electrically couple one conductor of the cable to another conductor. Conclusion
    [00095] Although only a few examples have been described in detail above, those skilled in the art will readily appreciate that many modifications are possible in the examples. Accordingly, all such modifications are intended to be included within the scope of this disclosure as defined in the following claims. In the claims, means plus function phrases are intended to cover the structures described here as performing the recited function and not just structural equivalents, but equivalent structures as well. Thus, although a nail and a screw may not be structural equivalents in that a nail employs a cylindrical surface to fasten pieces of wood together, whereas a screw employs a helical surface, in the fastening environment of wood pieces a nail and a screw can be equivalent structures. It is the plaintiff's express intent not to invoke 35 USC § 112, paragraph 6 for any limitations of any of the claims herein, except for those in which the claim expressly uses the words “means to” in conjunction with an associated function.
    权利要求:
    Claims (9)
    [0001]
    1. ASSEMBLY, characterized in that it comprises: a housing comprising an opening, a hole extending from the opening along an axis, and a sealable opening in fluid communication with the hole and disposed at an axial distance from the opening; and a cable feed-in body comprising a first axial end, a second axial end, a hole extending between the axial ends, a tapered hole surface and a sealable opening, the cable feed-in body being partially disposed. inside the housing bore to locate the second axial end at an axial distance from the housing opening that exceeds the axial distance of the sealable housing opening from the housing opening to at least partially form an overlapping seal between the direct feed body of cable and the bore of the housing, the overlap seal being testable by introducing a fluid through the sealable opening of the housing.
    [0002]
    2. Assembly according to claim 1, characterized in that the direct cable feed body comprises a sealing element mounted thereon, the sealing element disposed axially between the opening and the sealable opening of the housing, and a surface which forms a sealing interface with a tapered surface of the bore of the housing, the sealing interface disposed axially between the sealable opening and the second axial end of the cable feed body.
    [0003]
    3. Assembly according to claim 1, characterized in that it further comprises a coupling structure arranged in the housing bore and partially in the bore of the direct cable feed body through the second axial end of the direct cable feed body.
    [0004]
    4. Assembly according to claim 1, characterized in that it comprises a cable, a compression nut and a ferrule in which a portion of the cable and ferrule is disposed in the hole of the cable feed body and in which the compression nut is attached to the direct cable feed body to apply a compressive force between the ferrule and the tapered bore surface of the direct cable feed body to at least partially form an overlap seal, the overlap seal being testable by introduction of fluid through the sealable opening of the cable feedthrough body.
    [0005]
    5. Assembly according to claim 1, characterized in that the housing comprises a plurality of openings and a plurality of corresponding holes, each of the plurality of openings and holes configured for receiving the respective direct feed bodies of cable.
    [0006]
    6. Assembly according to claim 1, characterized in that the housing comprises a motor housing for an electric submersible pump (ESP).
    [0007]
    7. Set according to claim 1, characterized in that the housing comprises a housing for a heater.
    [0008]
    8. ASSEMBLY, characterized in that it comprises: an above well body portion and a downhole body portion, the body portions being connectable to form a cavity therein, wherein the above well body portion comprises a well hole above and an uphole tapered bore surface and wherein the downhole body portion comprises a downhole bore and a downhole tapered bore surface; an insulating block disposed within the cavity, wherein the insulating block comprises a through hole axially aligned with the downhole above the downhole body portion and the downhole hole of the downhole body portion; and a boot sealing component disposed in the through hole of the insulating block wherein the boot sealing component comprises an uphole sleeve for locking an uphole conductor, a downhole sleeve for locking a downhole conductor and a coupling conductor for electrically coupling the above well conductor and the downhole conductor, wherein the above well body portion comprises a sealable test opening for testing an overlapping seal disposed in the bore of the above well body portion and wherein the downhole body portion comprises a sealable test opening for testing an overlapped seal disposed in the bore of the downhole body portion.
    [0009]
    9. Assembly according to claim 8, characterized in that it comprises the above well conductor and the downhole conductor and comprising a contact pin fixed to one of the above well conductor and the downhole conductor.
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    同族专利:
    公开号 | 公开日
    SA113340561B1|2016-08-04|
    NO20130694A1|2013-11-19|
    US9322245B2|2016-04-26|
    US20130309888A1|2013-11-21|
    BR102013012436A2|2015-10-13|
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    法律状态:
    2015-10-13| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-01-26| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-04-20| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/05/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201261648872P| true| 2012-05-18|2012-05-18|
    US61/648,872|2012-05-18|
    US13/892,275|2013-05-11|
    US13/892,275|US9322245B2|2012-05-18|2013-05-11|Metal encased cable power delivery system for downhole pumping or heating systems|
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