• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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    • 专利摘要:
    VALVE TO CONTROL THE FLOW OF A DRILLING FLUID, AND, METHOD OF CONTROLLING THE FLOW OF A DRILLING FLUID A valve to control the flow of a drilling fluid through a down-hole tool, which can be positioned in a borehole penetrating in an underground formation. The downhole tool has an enclosure with a drill motor in it and a drill at its end. The drilling motor has an enclosure with a rotationally movable rotor in a rotor channel when the drilling fluid passes through the rotor channel between the enclosure and the rotor. The rotor has a deflection channel through it to deflect a portion of the drilling fluid through it. The valve includes a valve plate positioned upstream of the engine. The plate and valve have through it at least one flow passage and at least one bypass passage. The flow passage is in fluid communication with the rotor channel to pass the drilling fluid through it. The bypass is in selective fluid communication with the bypass channel, when the rotor rotates around the enclosure and moves (...).
    公开号:BR112013025421B1
    申请号:R112013025421-1
    申请日:2011-11-08
    公开日:2020-10-27
    发明作者:Curtis Lanning；Dong Phung；Aaron Schen；Jacob Riddel
    申请人:National Oilwell Varco, L.P.；
    IPC主号:
    专利说明:

    1. Field of the Invention
    [001] This description refers generally to techniques for performing well site operations. More specifically, the description refers to techniques, such as drill motors (and related valves) used in drilling well holes. 2. Description of the Related Art
    [002] In the oil and gas exploration and production industry, subsurface formations are accessed by drilling boreholes from the surface. Typically, a drill bit is mounted at the bottom end of a casing tubing (referred to as a "drill string") and advanced into the earth from the surface to form a well. A drill motor is positioned along the drill string to perform various functions, such as providing strength for the drill bit to drill the well hole. The drilling fluid or “mud” can be pumped down through the drill string from the surface, out through the drill bit nozzles. The drilling fluid can carry drill cuttings out of the borehole and back up to the surface through an annular crown between the drill pipe and the well hole wall. When the fluid passes through the drilling mud motor, a rotor positioned on a stator of the drilling motor can be activated.
    [003] A conventional drilling mud motor can be, for example, a progressive cavity or Moineau motor, having a fixed helical stator, with a rotational rotor positioned on it. Typically, the rotor has multiple helical lobes to fit a greater number of helical grooves formed in the rubber stator. The drilling mud (or other suitable fluid) can be pumped into the space between the rotor and the stator. The drilling mud can be pumped through the engine and forced through a progressive cavity in it, thereby causing the engine to spin in an eccentric manner. Other drilling engines, such as turbine driven engines with turbine rotors, have also been developed.
    [004] In some cases, it may be desirable to control the flow of fluid as it passes through the drill string as described, for example, in U.S. Patent Nos. 7086486, 4979577 and 4275795. The fluid flow can be used in an attempt to provide a hammer or percussive effect, as described in U.S. Patent No. 6508317, which is hereby incorporated by reference.
    [005] Despite the development of techniques to control the flow of fluid through a drill string, there remains a need to provide advanced techniques to control the flow. It may be desirable to provide techniques that can be used to assist in preventing the drilling tool from attaching to the borehole. It may also be desirable for such techniques to reduce vibration and / or increase the drilling efficiency of the downhole tool, while preventing drill failure. This description addresses the length of this need in the art. SUMMARY
    [006] The description refers to a valve for a drill motor. The valve has a passage to pass fluid into a rotor channel inside the engine for rotation of a rotor therein and a bypass to pass fluid through a bypass channel of the engine. The bypass is selectively alignable with the bypass channel, to selectively allow fluid to bypass it. The description refers to a drill motor valve used to control the flow of fluid passing through a drill motor motor rotor. The valve can be used, for example, to selectively provide pressure pulses in the fluid flowing through the drill motor, for example, at a preset pressure and / or torque level. The valve can also be used to provide high-speed oscillations in the rotational speed of the drill and / or to adjust the torque of the drill motor to selectively decrease the drill speed, thereby providing pressure spikes to generate a hammer effect on the torque of the drill. drill. The fluid flow can be varied to reduce torsional (or lateral engine) vibration, to assist in preventing stick-slip, and / or to assist in preventing the drilling tool from catching into the well bore. it can also be varied to increase drilling efficiency (eg, faster drilling speeds for similar weight on the drill and reduced reactive torque).
    [007] In at least one aspect, the description refers to a valve to control the flow of a drilling fluid through a down-hole tool that can be positioned inside a well hole and penetrates an underground formation. The downhole tool includes a drill bit at one end and a drill motor. The drill motor has an enclosure with a movable rotor in a rotor channel within the enclosure for the passage of drilling fluid through it. The rotor has a bypass channel to divert a portion of the drilling fluid through it.
    [008] The valve includes a valve plate (or plate valve) positioned upstream of the engine. The valve plate has through it at least one flow passage and at least one bypass passage. The flow passage is in fluid communication with the rotor channel to pass the drilling fluid through it, whereby the rotor is rotatable within the enclosure. The bypass is in selective fluid communication with the bypass channel, when the rotor moves near the enclosure and the bypass channel selectively moves to align with at least part of the at least one bypass to deviate through it a part of the drilling fluid, whereby a hammering effect is generated on the bit.
    [009] The rotor can be a helical rotor orbiting within a helical stator within the enclosure, or a rotating turbine within the enclosure. The bypass can be offset from a geometric axis of rotation of the rotor. The rotor channel can be offset from the rotor's axis of rotation. The valve plate may include a central hub and an outer ring with at least one radius defining at least one rotor passage between them.
    [0010] The valve may include a nozzle, a rotor tongue, a rotor ring and / or a wear tip. The wear tip can be directly or indirectly coupled to the rotor. The bypass pass may include a plurality of bypass passages. The bypass channel can be positioned in full alignment, partial alignment or non-alignment with the bypass passage.
    [0011] In another aspect, the description refers to a descending hole tool that can be positioned in a well hole penetrating an underground formation. The downhole drilling tool has a drill string with a drill bit at one end and drill fluid passing through it. The downhole tool includes a drill motor that can be positioned on the drill string. The drill motor includes an enclosure and a rotationally mobile rotor in a rotor channel in the enclosure when drilling fluid passes through a rotor channel between the enclosure and the rotor. The rotor has a bypass channel to divert a portion of the drilling fluid through it. The downhole tool also includes a valve positioned upstream of the engine to control the flow of drilling fluid through it.
    [0012] The valve includes a valve plate positioned upstream of the engine. The valve plate has at least one flow passage and at least one bypass passage through it. The flow passage is in fluid communication with the rotor channel, to pass the drilling fluid through it. The bypass is in selective fluid communication with the bypass channel, when the rotor rotates near the enclosure and moves the bypass channel to align with at least part of the at least one bypass, bypassing a part of the drilling fluid through it, whereby a hammering effect is generated on the drill.
    [0013] The motor can also include a helical stator and the rotor can be a helical rotor orbiting it. The rotor can be a rotating turbine around a geometric axis of the downhole tool. The downhole tool may also include a regulator to selectively restrict flow to the bypass channel. The regulator can be operably connected to an end upstream of the rotor.
    [0014] The regulator may include an enclosure with a clutch to selectively rotate a regulating rotor at a given pressure reached, whereby the regulating rotor selectively allows the drilling fluid to pass into at least one bypass passage. . The regulator may include a retractable piston to selectively allow the drilling fluid to pass through it and rotate the regulating rotor, or a selectively releasable brake to allow rotation of the regulating rotor.
    [0015] Finally, in another aspect, the description refers to a method of controlling the flow of a drilling fluid through a down-hole tool that can be positioned in a well hole by penetrating an underground formation. The down-hole tool including a drill bit at one end and a drill motor, the drill motor including an enclosure with a movable rotor in a rotor channel within the enclosure when the drilling fluid passes through it. The rotor has a bypass channel to divert a portion of the drilling fluid through it.
    [0016] The method involves placing a valve plate upstream of the engine. The valve plate has at least one flow passage and at least one bypass passage through it. The flow passage is in fluid communication with the rotor channel. The bypass is in selective fluid communication with the bypass channel, when the rotor rotates around the enclosure and moves the bypass channel to align with the bypass. The method also involves rotating the rotor by passing the drilling fluid through the flow passage and into the rotor channel, creating a hammering effect by selectively deflecting part of the drilling fluid through the plate bypass and into the bypass channel , when the bypass channel moves into alignment with at least part of the bypass. The method may also involve regulating the flow of fluid to the valve plate and selectively passing the fluid into the bypass channel. BRIEF DESCRIPTION OF THE DRAWINGS
    [0017] So that the details and advantages cited in the present description can be understood in detail, a more particular description, briefly summarized above, can be made by reference to its embodiments, which are illustrated in the attached drawings. It should be noted, however, that the attached drawings illustrate only typical embodiments of this description and are therefore not to be considered as limiting its scope, since the description may admit other equally effective embodiments. The figures are not necessarily to scale and certain details and certain views of the figures may be shown exaggerated in scale or schematically, in the interests of clarity and conciseness.
    [0018] Figure 1 is a schematic view, partly in cross section, of a drilling rig having a downhole tool, including a drill string, a drill motor with a valve and an advanced drill bit in the ground to form a well hole.
    [0019] Figures 2A and 2B show longitudinal and exploded cross section views, respectively, of a part of a downhole unit (BHA) of a downhole tool having a drilling motor with a valve, according to description.
    [0020] Figures 3A - 3F are seen in cross section of the valve of Figure 2A, taken along line 3-3 representing a valve plate in various positions.
    [0021] Figures 4A and 4B are seen in schematic longitudinal cross section of a part of a down-hole tool representing various configurations of an engine with a valve plate and a regulator according to the description.
    [0022] Figures 5A and 5B are seen in schematic, radial and longitudinal cross section, respectively, of a part of a descending hole tool, having a drilling motor with an alternative valve.
    [0023] Figure 6 is a flow diagram representing a method of controlling the flow through a descending hole tool. DETAILED DESCRIPTION
    [0024] The description that follows includes apparatus, methods, techniques and instructional sequences, which embody techniques of the present subject. However, it should be understood that the described embodiments can be practiced without these specific details.
    [0025] Figure 1 shows schematically a representation of a down-hole tool 10, comprising a drill column 2 and a drill bit 1 at its end. The drilling column is suspended by a derrick 4 to drill a borehole 6 in the ground. A borehole unit (BHA) 8 is located at a lower end of drill column 2 above drill bit 1. BHA 8 can have drill motor 9 with a valve 11 as described.
    [0026] A drilling mud (or fluid) is pumped from a puddle of mud 12 and through the drilling column 2, as indicated by the arrows. As the drilling mud passes through the drilling column 2, the drilling mud drives and energizes the drilling motor 9. The drilling motor 9 is provided with valve 11 to selectively deflect a portion of the fluid flowing into the drill motor 9, as will be further described here. Drill motor 9 is used to rotate and advance drill bit 1 into the earth. The drilling mud, passing through the drill motor 9, leaves the drill bit 1, returns to the surface and is recirculated through the drill column 2, as indicated by the arrows.
    [0027] While Figure 1 represents a certain configuration of a downhole tool 10 from a well location, the downhole tool can be any of numerous types well known to those skilled in the drilling industry. There are numerous possible arrangements and configurations for drilling well holes within the earth and it is not intended to be limited to a particular configuration.
    [0028] Figures 2a and 2B show cross-section and exploded views, respectively, of the BHA 8 drill motor and valve 11 of the down-hole tool 10 of Figure 1. As shown in Figure 2A, valve 11 includes a plate valve 200 upstream of the drill motor 9. The valve plate 200 can be positioned on a sub (or drill pipe) 203 operatively connected with a rising bore end of the drill motor 9.
    [0029] The drill motor 9 has a motor stator 202 with a rotor channel 204 through it and a motor rotor 206 with a bypass channel 208 through it. The drill motor 9 can optionally be provided with other details, such as a nozzle 210, rotor tongue 212, tongue ring 214 and wear tip 216. Depending on the configuration, some or all of these details can be fixed with respect to rotor 206 or coupled for rotation with it. These details have a passage 218 through them in fluid communication with the bypass channel 208 for passage of the fluid through them.
    [0030] The valve plate 200 has a flow passage 226 in fluid communication with the rotor channel 204 to pass fluid through it and rotate the rotor 206. The valve plate 200 has a plate offset (or bypass passage) 220 therethrough, which is positioned for selective fluid communication with bypass channel 208 to selectively deflect a portion of the drilling fluid through it. Valve plate 200 can be provided with a locking mechanism (not shown), such as an O-ring, key, key or other connector, to securely hold valve plate 200 in position relative to motor stator 202. A Valve plate configuration 200, adjacent to motor rotor 206, can be used to provide an integrated motor / valve configuration to reduce space within the drill string.
    [0031] Figures 3A - 3F are seen in cross section, a part of BHA 8 of Figure 2A taken along line 3-3 representing the operation of valve plate 200. These figures also show an example sequence of the movement that the motor rotor 206 may have when the fluid flows through the drill motor 9 (see, eg, Figure 2A). Motor rotor 206 rotates within rotor channel 204 of motor stator 202. Motor rotor 206 can move from a first position in Figure 3A, sequentially through the positions in Figures 3B - 3D and to a final position in Figure 3A. Figure 3E, as indicated by the arrow.
    [0032] As shown in Figures 3A - 3E, plate offset 220 from valve plate 200 is in a fixed position in the center of valve plate 200. Plate offset 220 is shown to be in a central part of hub 320 , but it can be located anywhere along the valve plate 200, which will allow selective fluid communication with bypass channel 208. As shown in Figure 3F, an additional plate bypass 220 'can be provided. One or more plate deviations 220, 220 'of any shape can be provided.
    [0033] The valve plate 200 comprises a central hub 320 and an outer ring 322 with spokes 324 extending between them. Flow passages 226 are defined between hub 320, outer ring 322 and spokes 324. Flow passages 226 can be used to allow fluid to flow through valve plate 200 and into rotor channel 204, to energize motor 9 and drive the rotor. Although a hub and spoke configuration is represented, the valve plate can have several shapes to provide fluid flow to the engine.
    [0034] Parts of the fluid can be selectively deflected through deflection channel 208, via plate deflection 220 when motor rotor 206 passes behind valve plate 200. Plate deflection 220 is shown extending through the center of hub 320. Depending on the position of motor rotor 206 when it rotates within rotor channel 204, plate bypass 220 is selectively in fluid communication as bypass channel 208. This selective fluid communication stops the flow of fluid passing through the motor 9. Valve plate 200 can be sized and shaped so that plate offset 220 is exposed to bypass channel 208 of motor rotor orbiting 206. When motor rotor 206 orbits within motor stator 202, the bypass channel 208 orbits plate offset 220 in and out of alignment with plate offset 220, thereby causing the area available for fluid flow to increase and decrease when the engine rotor 206 gi frog.
    [0035] As shown in Figures 3A, 3C and 3D, plate offset 220 may be at least partially aligned with (partially open to) offset channel 208. Plate offset 220 may be in full alignment with (open for) the bypass channel 208, as shown in Figure 3B. As shown in Figures 3D, the plate bypass 220 can completely block (close) the flow of fluid through the bypass channel 208. When the fluid is blocked from flowing into the bypass channel 208, the fluid continues through the flow passages. flow 226 from valve plate 200 and into rotor channel 204.
    [0036] The selective fluid communication, through the plate diversion 220 and into the diversion channel 208, diverts a part of the fluid passing through the rotor channel 204. These interruptions provide pulses of fluid through the motor 9. These pulses of fluid can be used to manipulate the torque of the motor 9. These pulses of fluid can also be used to alter the flow out of the drill bit, thereby dislodging particles near the drill bit, which can cause the tool to stick to the well bore.
    [0037] The selective fluid communication of the valve plate 200 with the bypass channel 208 provides a variable area for the passage of fluid. Because the flow area through the plate bypass 220 (and / or 220 ') and into the bypass channel 208 may vary when the motor rotor 206 rotates, variable flow through the motor can be established. Because the fluid can accelerate and decelerate when plate bypass 220 and bypass channel 208 rotates in relation to each other, a 'water hammer' force can be generated along the longitudinal geometric axis of the drill motor 9.
    [0038] Plate bypass 220 can be used to define a fluid path through valve plate 200 and through bypass channel 208. Fluid flow through bypass channel 208 reduces the passage of fluid between the motor 206 and motor stator 202, thereby reducing the torque (and / or RPMs) of the drilling motor 9. This torque reduction may briefly slow the bit and may also provide a 'hammering effect' of the bit torque . This 'hammering effect' can generate a force that creates torque fluctuations due to the variation of pressure pulses when valve plate 200 is selectively aligned (open, partially open and / or closed). The varied flow can also be used to power additional downhole unit (BHA) tools. For example, high-pressure fluid can be diverted to other down-bore tools, such as torsional drill hammers, axial drill hammers, flow pulsers / modulators, drill bits, well bore reamers, stabilizers and other known types of down-hole tools, below the drilling motor, using fluid with the full pressure available to the motor.
    [0039] Figures 4A - 4B show schematic views of motor 9 of BHA 8 figure 1 provided with valve plate 200 and regulators 400a and 400b, respectively. Regulators 400a, b can be configured to selectively restrict fluid flow into valve plate 200 and engine 9, to make variable torque available to engine 9. This varied torque, caused by the interrupted flow, can be used to create a torsional impact, or 'hammer effect'.
    [0040] Figure 4A represents a 'jaw-sliding' regulator 400a positioned upstream of engine 9 and valve plate 200. Regulator 400a includes a regulating enclosure 430a having a passage 432 through it, a clutch 434a, regulator rotor 436, a regulator stator 437 and a nozzle 438.
    [0041] A lower end 440 of the enclosure 430a can be inserted into a rising bore end (or tail thread) 442 of motor rotor 206 and extends upwards from there a bore distance. Valve plate 200 is positioned adjacent to the rising bore end 442 of motor rotor 206. Enclosure 430a has a tubular body ending at a tip 444. Enclosure 430a has openings 446 through it to allow fluid to pass into the passage 432, through the nozzle 438 and into the bypass channel 208, as indicated by the arrows.
    [0042] When fluid flows through passage 432, the fluid rotationally drives regulator rotor 436 within regulator stator 437 in the same way as motor rotor 206 and motor stator 202. Clutch 434a is operated to restrict fluid flowing through passage 432 at a given pressure, thereby restricting the rotation of regulator rotor 436 and the passage of fluid into the bypass channel 208.
    [0043] Clutch 434a and regulator rotor 436 are rotationally positioned at passage 432 of enclosure 430a. Clutch 434a includes a driving shaft 448 and a brake 450 adjacent to tip 444. Regulating rotor 436 is operatively connected to a downstream end of driving shaft 448 by a connector 452, such as a u-joint. The rotation of regulator rotor 436 can be used to alter the flow of fluid as it passes through passage 432 and into bypass channel 208. The eccentric movement of regulator rotor 436 selectively opens and closes passage 432 at the lower end 440 of the enclosure. This movement creates a pressure pulse above motor 9, which can be used to create a torque pulse through rotor 9.
    [0044] The brake 450 can continuously engage the driving axle 448 when it rotates as indicated by the arrows. When the fluid pressure exceeds a given level, the brake resistance 450 can be overcome to allow rotation of the regulator rotor 436. The brake 450 can be placed at a given resistance, so that the regulator rotor 436 can be allowed to operate, for example, at a given pressure setpoint. For example, at a given pressure, clutch 434a can be activated to allow regulator rotor 436 to engage and effectively 'turn off' the flow (or close) through regulator 400a. This configuration allows the hardening retardant 400a to act as a 'clamp-slip' clutch, to adjust the pressure required to stop the flow of fluid. The interrupted fluid flow can be used to provide the torsional 'hammering effect'.
    [0045] Fig. 4B represents a spring regulator 400b, positioned at a rising bore end of the motor rotor 206. The spring regulator 400b operates similarly to the jaw-slider regulator of Figure 4A to selectively allow rotation of the regulator rotor 436. The spring regulator 400b includes a regulator enclosure 430b having a passage 432 through it, a clutch 434b, a clutch enclosure 435, regulator rotor 436, regulator stator 437 and nozzle 438.
    [0046] The lower end 440 of the enclosure 430b can be inserted into the rising hole (or grout thread) end 442 of the motor rotor 206 and extending a hole distance upward thereafter. The valve plate 200 is positioned adjacent to the rising bore end 442 of the motor rotor 206. The regulating enclosure 430b has a tubular body with the clutch 434b positioned at its upper end. Clutch housing 435 extends a distance from the upper end of regulator housing 430b and ends at tip 444. Regulatory housing 430b has openings 446 through it and clutch housing 435 has openings 447 through it to selectively allow fluid passes into passageway 432. When openings 446 of regulator enclosure 430b align with openings 447 of clutch enclosure 435, fluid is allowed to pass through passageway 432, through nozzle 438 and into the bypass channel 208, as indicated by the arrows.
    [0047] Clutch 434b is slidably positioned inside clutch housing 435. Clutch 434b includes sliding piston 460 and springs 462 attached to the shoulders 464 of enclosure 430b. Regulator rotor 436 is rotationally positioned within the housing and activated by sliding piston 460. Rotation of regulator rotor 436 can be used to change the flow of fluid as it passes through passage 432 and into bypass channel 208. Movement eccentric of the regulating rotor 436 selectively opens and closes the passage 432 at the lower end 440 of the enclosure 430b. This movement creates a pressure pulse over the motor 9, which can be used to create a torque pulse through the motor 9.
    [0048] The clutch 434b can be selectively activated, for example, by the fluid passing into the enclosure 430b. The sliding piston 460 is slidably movable within the passage 432, as indicated by the arrows. The sliding piston 460 can compress the spring 462 as the pressure increases. When the pressure increases, the sliding piston 460 is retracted into the enclosure 430b and the openings 446 move to align with the openings 447. In this position, fluid can be allowed to flow through the openings 447 and into the passage 432. In this way, clutch 434b can open and close in response to pressure applied to regulator 400b. The spring 462 can be configured so that a given pressure can overcome the force of the spring 462 and retract the sliding piston 460 to the open position. The opening and closing of regulator 400b by the sliding piston 460 can be used to stop the flow of fluid through it. The interrupted fluid flow can be used to provide the torsional 'hammer effect'.
    [0049] In operation, regulators 400a, b of figures 4A and 4B can be used to adjust the flow to valve plate 200 and / or into the engine 9. Regulators 400a, b can measure fluid flow through bypass channel 208, thereby bypassing the motor force section 9. The flow pulsed through the bypass channel 434 can be used to generate a pressure pulse above a downstream motor pressure 9. The pressure pulses provide the hammering effect on the drill torque. Regulators 400a, b can be oscillated continuously, thereby pulsating the flow or, periodically using clutch 434a, b for 'pop-off', so that the pulsating effect only occurs at a pressure and / or torque level pre-established. This pulse can be used to minimize torsional and / or lateral vibration of the drill string. This pulse can also be used to dislodge material in the drill and / or to assist in preventing slip-catching.
    [0050] Although Figures 4A and 4B represent a specific clutch, other clutches capable of selectively controlling the flow of fluid can be used in the regulator, such as sliding, clamp, magneto-rheological, viscous fluid or other type of control mechanism.
    [0051] Figures 5A and 5B show schematic horizontal and longitudinal cross-sectional views, respectively, of a part of an alternative down-hole tool 8 'with an alternative engine 9' and valve 11 'usable in place of the down-hole tool 8, engine 9 and valve 11 in Figure 1. Alternative valve 11 'is similar to valve 11 in Figure 2A, except that, in this version, valve 11' includes a valve plate (or wear plate) 200 'with a wear point 216 'adjacent to it. The valve plate 200 'is similar to the valve plate of Figures 3A - 3F, except that a single decentralized bypass 220' is provided through hub 320 '.
    [0052] Wear tip 216 'is similar to wear tip 216 of Figures 2A and 2B, except that wear tip 216' has a decentralized passage 565 'through it, in fluid communication with the decentralized offset 220', and a passage 226 'through it in fluid communication with a rotor channel 204'. The decentralized offset 220 'and the decentralized passage 565' are decentralized with respect to a geometry axis of rotation Z of the wear tip 216 '.
    [0053] The wear point 216 'is coupled to and rotationally driven by the 9' motor. In the configuration of Figure 5B, engine 9 'is a turbine engine, but it can be a conventional drilling engine, rotationally driven by the flow of fluid through it. The 9 'turbine engine has a 206' turbine rotor positioned in an enclosure 202 ', with the rotor channel 204' between them. The 9 'turbine engine has a bypass channel 208' through it to divert a portion of the fluid through it. In some cases, the wear tip 216 'may be integral with the turbine rotor 206', so that these items are represented as a unitary detail in Figure 5B. The wear tip 216 'can be directly connected to a turbine motor 9' for rotation with it, or indirectly connected to the turbine motor 9 'for rotation with it via intervening components (eg, rotor clutch 212), as shown in Figures 2A and 2B.
    [0054] In operation, the fluid passes through the passage 226 'of the valve plate 200' and into the rotor channel 204 '. The rotor 206 'and the wear tip 216' are rotated close to the Z-axis by fluid flow through the rotor channel 204 '. During such rotation, the wear tip 216 'rotates adjacent to the valve plate 200'. When the wear tip 216 ’rotates, the decentralized passage 565’ is sometimes in alignment with the decentralized deviation 220 ’, thereby providing selective fluid communication between them. The fluid passing into the decentralized bypass 220 'flows through the decentralized passage 565' and into the bypass channel 208 'when in partial or total alignment with them. The fluid passing through the downhole tool 8 'and into the decentralized bypass 220' is prevented from passing through the decentralized passage 565 'and into the bypass channel 208 when not in alignment with them. This selective communication provides the hammering effect in a similar way to the selective fluid deviation communication 220 of Figures 3A - 3E.
    [0055] Figure 6 represents a method 600 of controlling the flow of fluid through a down-bore tool. The method involves positioning (670) a valve plate upstream of the engine (the valve plate having at least one flow passage and at least one bypass passage through it, flow passage in fluid communication with the rotor channel and the bypass passage in selective fluid communication with the bypass channel, when the rotor rotates close to the enclosure and moves the bypass channel to align with the bypass passage), rotating (672) the rotor through the drilling fluid passage through the passage flow and into the rotor channel, and creating (674) a hammering effect by diverting a portion of the drilling fluid through the plate bypass and into the bypass channel when the bypass channel moves to align with at least part of the bypass passage. The method may also involve regulating the flow of fluid into the valve plate. Regulation can selectively involve passing the fluid into the bypass channel. The hammering effect can induce an axial and / or radial torsional effect. The method can be repeated and performed in an order as desired.
    [0056] It will be noted by those skilled in the art that the techniques described here can be implemented for automated / autonomous applications via software configured with algorithms to perform the desired functions. These aspects can be implemented by programming one or more computers for adequate general purposes, having appropriate hardware. Programming can be carried out using one or more program storage devices readable by the processor (s) and coding one or more instruction programs executable by the computer to perform the operations described here. The program storage device may take the form of, for example, one or more floppy disks; a CD ROM or other optical disc; a read-only memory (ROM) chip; and other forms of the species well known in the art or subsequently developed. The instruction program can be “object code”, that is, in binary form, which can be executed more or less directly by the computer; in “source code”, which requires compilation or interpretation before execution; or in some intermediate way, such as partially compiled code. The precise forms of the program storage device and instruction coding are insignificant here. Aspects of the description can also be configured to perform the functions described (via the appropriate hardware / software) only on site and / or remotely controlled via an extended communication network (eg, wireless, internet, satellite, etc.).
    [0057] Although the embodiments are described with reference to various implementations and explorations, it should be understood that these embodiments are illustrative and that the scope of the inventive subject is not limited to them. Many variations, modifications, additions and improvements are possible. For example, one or more valves with one or more regulators and / or valve plates can be positioned close to various types of rotors in the downhole tool.
    [0058] Several examples can be provided for components, operations or structures described here as a single example. In general, the structures and functionality presented as separate components in the exemplary configurations can be implemented as a combined structure or component. Similarly, the structures and functionality presented as a single component can be implemented as separate components. These and other variations, modifications, additions and improvements may fall within the scope of the inventive subject.
    权利要求:
    Claims (12)
    [0001]
    1. Valve (11) to control the flow of a drilling fluid, through a down-hole tool (10) positioned in a well hole (6) penetrating an underground formation, the down-hole tool comprising a drill bit drilling (1) at its end and a drilling motor (9), the drilling motor comprising an enclosure (203) with a rotor (206) movable in a rotor channel (204) within the enclosure when the drilling fluid passes through it, the rotor having a bypass channel (208) to divert a part of the drilling fluid through it, the valve characterized by the fact that it comprises: a valve plate (200) positioned upstream of the engine, the valve plate having at least one flow passage (226) and at least one bypass passage (220) through it, at least one flow passage in fluid communication with the rotor channel to pass the drilling fluid through it, via the that the rotor is rotatable within the r ecinth, at least one bypass passage in selective fluid communication with the bypass channel when the rotor moves near the enclosure and the bypass channel selectively moves in and out of alignment with at least part of at least one bypass passage to divert a portion of the drilling fluid through it, whereby a hammering effect is generated on the bit.
    [0002]
    2. Valve according to claim 1, characterized by the fact that the rotor comprises a helical rotor orbiting within a helical stator (202) within the enclosure or a rotating turbine (206 ') within the enclosure.
    [0003]
    3. Valve according to claim 1, characterized by the fact that at least one bypass passage and / or the rotor channel is off-center in relation to a geometric axis of rotation of the rotor.
    [0004]
    Valve according to claim 1, characterized in that the valve plate comprises a central hub (320) and an outer ring (322) with at least one radius (324) defining at least one rotor passage (226 ) between them.
    [0005]
    Valve according to claim 1, characterized in that it further comprises a nozzle (210), a rotor tongue (212), and / or a tongue ring (214).
    [0006]
    6. Valve according to claim 1, characterized by the fact that it also comprises a wear tip (216), the wear tip is directly or indirectly coupled to the rotor.
    [0007]
    7. Valve according to claim 1, characterized by the fact that the bypass channel is positionable in one of the total alignment, partial alignment and non-alignment with the bypass passage.
    [0008]
    8. Valve according to claim 1, characterized by the fact that it further comprises a regulator (400a, b) to selectively restrict the flow to the bypass channel, the regulator operably connectable to an end upstream of the rotor.
    [0009]
    9. Valve according to claim 8, characterized in that the regulator comprises an enclosure (430a, b) with a clutch (434a, b) to selectively rotate a regulating rotor (436) when a certain pressure is reached, the regulator selectively allows the drilling fluid to pass into at least one bypass passage.
    [0010]
    10. Valve according to claim 9, characterized in that the regulator comprises a retractable piston (460) to selectively allow the drilling fluid to pass through it and rotate the regulating rotor.
    [0011]
    11. Valve according to claim 9, characterized by the fact that the clutch comprises a selectively releasable brake (450), to allow rotation of the regulating rotor.
    [0012]
    12. Method of controlling the flow of a drilling fluid through a down-hole tool (10) positioned in a well hole (6) penetrating an underground formation, the down-hole tool comprising a drill bit (1) in its end and a drill motor, the drill motor comprising an enclosure with a rotor (206) movable in a rotor channel (204) within the enclosure when the drilling fluid passes through it, the rotor having a bypass channel (208) to divert a part of the drilling fluid through it, the method characterized by the fact that it comprises: positioning a valve plate (200) upstream of the engine, the valve plate having at least one flow passage (226) and at least one bypass pass (220) therethrough, at least one flow pass in fluid communication with the rotor channel, at least one bypass pass in selective fluid communication with the bypass channel, when the rotor rotates in tor in the enclosure; rotating the rotor by passing the drilling fluid through at least one flow passage and into the rotor channel; moving the bypass channel in and out of alignment with at least one bypass while rotating the rotor; and create a hammering effect by deflecting a part of the drilling fluid through at least one plate offset and into the bypass channel when the bypass channel moves into alignment with at least a part of at least one passage deviation.
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    同族专利:
    公开号 | 公开日
    RU2549647C1|2015-04-27|
    US20140041943A1|2014-02-13|
    CA2832212A1|2012-10-11|
    WO2012138383A3|2013-01-10|
    RU2013149863A|2015-05-20|
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    WO2012138383A2|2012-10-11|
    BR112013025421A2|2016-12-27|
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-09-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-04-14| B09A| Decision: intention to grant|
    2020-10-27| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 08/11/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201161473614P| true| 2011-04-08|2011-04-08|
    US61/473614|2011-04-08|
    PCT/US2011/059789|WO2012138383A2|2011-04-08|2011-11-08|Drilling motor valve and method of using same|
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