• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    connector protector, method for protecting downhole connectors during a downhole marriage sequence, and downhole connector protector is provided to protect one or both downhole connectors during descent into the wellbore before coupling to the wellbore. The connect shield may comprise dissolvable or degradable material and include a hitch section and a removal feature. The connector shield may be dissolved or degraded by a reactive agent or temperature either introduced into the deep end near the shields or contained within a chamber included in the connector shield or created by a connector shield. The connector protector can be further coupled by a nonreactive cover to control the reaction rate of the dissolvable material. The cover may be broken before the marriage of the downhole connectors.
    公开号:BR112012005182B1
    申请号:R112012005182-2
    申请日:2010-09-03
    公开日:2019-06-18
    发明作者:Ashish Sharma；Dinesh R. Patel
    申请人:Schlumberger Holdings Limited；
    IPC主号:
    专利说明:

    CONNECTOR PROTECTOR, METHOD FOR PROTECTING WELL BACKGROUND CONNECTORS DURING A WELL BACKGROUND WEDDING SEQUENCE, AND WELL BACKGROUND CONNECTOR PROTECTOR BASICS
    Field of the Invention [0001] Modalities of the present invention refer in general to the protective devices used to protect well bore equipment and, more specifically, as an example, but not as a limitation, to the connector protectors used to protect connections downhole, although other modalities may exist in a wide variety of applications beyond this general area.
    Description of Related Art [0002] The following descriptions and examples are not admitted as being prior art due to their inclusion in this section.
    [0003] In order to produce oil more efficiently and effectively from increasingly scarce sources, well systems have had to adapt to a variety of smart downhole devices. These downhole devices and tools, such as valves, sensors and pumps, among others, typically require some type of conduit to the surface or even other devices located farther up in the well to provide power, communication, or both. The conduit can be in the form of an electrical cable, fiber optic cable, hydraulic control line, or a hybrid combination of existing cable types, among others.
    [0004] However, another problem also complicates the ability to efficiently and effectively produce oil
    Petition 870190011753, of 02/02/2019, p. 5/31
    2/16 from a reservoir. Many current reservoirs, when they are located, are supplied deep in the land or under the sea. Completing a well may require using two or more completions, such as a top completion and a bottom completion as a simple example. A similar situation also requiring multiple completions may exist when completing sections of multiple zones of a lateral or vertical well or multiple derivations of a multilateral well. If a downhole device is located on a lower completion or on a side bypass, for example, an energy and / or communication duct may have to be extended to the downhole device from an upper wellhead location. . To establish this conduit, a downhole connection between several completion sections would have to be made in a typically harsh and dirty wellbore environment. These types of connections can be referred to as wet coupling connections.
    [0005] Crusts, sand, downhole fluids, grease, sheared particles of rubber / element, mud, rocks, etc. are some examples of common fragments in a well-hole environment. These rock bottom fragments can cause a number of potential problems when trying to make a wet coupling connection. Hard residues can create a displacement between the wedding parts of the downhole connector and therefore prevent them from matching each other or only partially matching each other. Fragments can damage or deform the connector's matching surfaces and the
    Petition 870190011753, of 02/02/2019, p. 6/31
    3/16 equipment, resulting in physical damage to the exposed ends of the connector. The debris can clog or block the openings or holes in the connector parts. In addition, corrosive downhole fluids can damage the inner parts of the matching devices prior to the start of a wet coupling connection sequence.
    SUMMARY [0006] According to an embodiment of the invention, it is a connector protector comprising a body composed of a material that is dissolvable or degradable when exposed to one or more conditions configured to react with the material. The connector protector may further comprise a connector interface configured to connect to a downhole connector.
    [0007] According to another embodiment of the invention is the method for protecting downhole connectors during a downhole matching sequence comprising covering at least one of a downhole connector wedding pair with a connector guard. dissolvable. Another
    step can if break or fracture dissolvable at the protector of connector marriage From connectors background additional can be that of expose the dissolvable to one or more conditions
    to dissolve the connector protector that are selected dissolvable during the non-protective coating of the well connector. A dissolvable step.
    [0008] Other or alternative features will become evident from the following description, from the drawings, and from the claims.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Petition 870190011753, of 02/02/2019, p. 7/31
    4/16 [0009] Certain embodiments of the invention will now be described with reference to the accompanying drawings, in which similar reference numerals denote similar elements. It should be understood, however, that the attached drawings illustrate only the various implementations described here and are not intended to limit the scope of the various technologies described here. The drawings are as follows:
    Figure 1 is a general schematic drawing of a well system comprising a downhole connection and multi-part completion, according to an embodiment of the present invention;
    Figure 2 is a side cross-sectional view of a connector protector and a male downhole connector according to an embodiment of the invention;
    Figure 3 is a side cross-sectional view of a connector protector and a well-bottom female connector, according to an embodiment of the invention;
    Figure 4 is a side cross-sectional view of a connector protector and a well-bottom female connector according to another embodiment of the invention;
    Figure 5 is a side cross-sectional view and a rear view of a connector protector according to another embodiment of the invention;
    Figure 6 is a side cross-sectional view of a connector protector according to another embodiment of the invention; and
    Figure 7 is a side cross-sectional view of a connector protector according to another embodiment of the invention.
    Petition 870190011753, of 02/02/2019, p. 8/31
    5/16
    DETAILED DESCRIPTION [00010] In the following description, several details are presented to provide an understanding of the present invention. However, it will be understood by those of ordinary skill in the art that the present invention can be practiced without or modifying these details and that several variations from the described modalities may be possible.
    In the specification in the claims:
    the terms connect, connection, connected, in connection with, connecting, coupling, coupled, coupled with and coupling are used to mean in direct connection with or in connection through another element; and the given term used to mean one element or more than one element.
    As used herein, the terms top bottom, top and bottom, upwards and downwards, upstream and downstream;
    above and below; and other similar terms indicating relative positions above or below a given point or element are used in that description to more clearly describe some embodiments of the invention.
    [00011] With reference generally to Figure 1 as an illustrative example, a well system 10 can be provided at a surface location 20 to produce a desirable fluid (for example, oil, natural gas, methane, water, etc.) at from a reservoir formation 30. The well system 10 can be coupled to the formation 30 via a well head 15 and a coated or uncoated well hole 25 (an uncoated well hole 25 is shown in this example) . Although the
    Petition 870190011753, of 02/02/2019, p. 9/31
    6/16 well 10 in this figure is shown on a terrestrial surface 20, disclosure modalities may not be limited to this example. The well system 10 may also be provided at an underwater location, may comprise a deviated or horizontal well, may be a multilateral well, or may comprise some combination of well types, for example.
    [00012] Well hole 25 of well system 10 can be completed with a multi-part completion, such as with a top completion 40 and a bottom completion 50. Multi-part completion can also be used in multi-zone wells extending over great distances and multilateral wells in which a single well hole has one or more lateral derivations that extend from that place, among others. In this illustrative example, a bottom 50 can be installed first, with the bottom production tubing 55, and a downhole device 57. The downhole device 57 can be coupled to a bottom duct 75 terminated with a lower wellhead connector 70 (shown in this example as a wellhead female connector, but not limited to this configuration).
    [00013] The top completion 40 may comprise an upper production pipe 45 and an upper conduit 65 terminated at one end with a wellhead upper connector 60. The other end of the upper conduit 65 may be terminated in a mounting device of surface 67 or other intermediate device or tool. The conduit can be a hydraulic control line, electric cable, fiber optic cable or
    Petition 870190011753, of 02/02/2019, p. 10/31
    7/16 similar. The upper wellhead connector 60 will be engaged and connected with the lower wellhead connector 70 during the installation of the upper completion 40. As illustrated, this connection between the upper and lower wellhead connectors 60, 70 occurs in the hole well 25, typically under severe environmental conditions. When coupled together, the upper and lower downhole connectors 60, 70 form a union establishing a single conduit connecting the downhole device 57 to a surface unit 67 (or communication station, or control station, hydraulic unit among others) through the upper duct 65 and lower duct 75.
    [00014] The downhole device 57 can be a sensor, valve, smart device, or downhole tool. In the case where the downhole device 57 is a distributed temperature sensor (DTS), then the upper and lower ducts 65, 75 will contain fiber optic cables and the upper and lower wellhead connectors 60, 70 will join the ends of fiber optic cables. In another case, the downhole device 57 may be an ESP (electronic submersible pump) or a variable choke, in either case, the upper and lower ducts, 65 and 75 may comprise energy and / or communication passages. . In still other cases, the energy supplied through the upper and lower ducts, 65, 75, may be in the form of hydraulic energy, in which case the upper and lower wellhead connectors 60, 70 would couple the hydraulic lines together. control.
    Petition 870190011753, of 02/02/2019, p. 11/31
    8/16 [00015] One modality for the bottom, top and bottom 60, 70 connectors is represented by the male and female connectors, shown in the figure, but this is just an enlightening simplification in the interest of reducing disclosure and not should be considered as a limiting configuration. Other types and configurations of wellhead connectors, upper and lower, 60, can be used with connector protector modalities.
    To prevent the well-bore fluid from contaminating the joint or connection interface between the bottom and top well connectors, 60, 70, one or more connector guards can be used to protect the connector when the completions are lowered to the bottom of the well.
    [00016] To maintain a clean environment for splicing 60 downhole connectors,
    70, connector protector modalities 100, 200
    Figures 2 and 3) can be attached to the downhole and 70 connectors, respectively, before descending into the downhole.
    In some embodiments, only a connector protector 100 or
    200, can be used. Connector protectors 100, 200 can be made of a dissolvable or degradable material to facilitate removal and / or to prevent connector protectors 100,
    200 interfere with the wet marriage connection or otherwise obstruct the same between the downhole connectors 60, 70.
    [00017] For example, a modality of a connector protector can be made from one or more degradable and / or reactive materials. The connector protector can be partially or integrally degradable (soluble) in a
    Petition 870190011753, of 02/02/2019, p. 12/31
    9/16 designated fluid environment, such as water, brine or other injection fluid, production fluid, drilling fluid, and / or combinations thereof. In one or more embodiments, the connector protector can be made of one or more materials that disintegrate, but do not necessarily dissolve in a designated fluid environment. In one or more embodiments, the connector guard may include compositions built to exhibit optimized reactivity to other compositions that may be present in the connector guard. Additional details regarding various examples of degradable or dissolvable material can be found in United States Patent Application No. 12/430298, the subject matter of which is incorporated herein by reference.
    [00018] Turning generally to Figure 2, an illustrative embodiment of a connector protector 100 is shown coupled to a male well-bottom connector 60. The connector protector 100 may comprise a dissolvable or degradable material 110, cover 120 , connector hitch section 130, removal feature 140 and seal 150. Shaft connector 60 may comprise a pipe 90, hitch feature 97 and connection member 95. Connector protector 100 can be attached to the connector downhole 60 around latching feature 97 via connector latching section 130. In some embodiments, downhole connector 60 and connector guard 100 may be substantially cylindrical, but other embodiments may not be limited to that setting.
    [00019] The dissolvable or degradable material 110 can
    Petition 870190011753, of 02/02/2019, p. 13/31
    10/16 may be at least partially enclosed by a cover 120. The cover 120 may be a non-dissolvable material or a material with a different rate of dissolution than the underlying material 100. In some cases, cover 120 may be permeable and function to control the exposure of the underlying material 110 to environmental conditions. In still other cases, cover 120 can act as an insulator to slow the rate of degradable or thermally dissolvable material 110. In some cases, cover 120 can be a non-permeable and / or brittle material that can break into small pieces from the application of a force, for example, tempered glass or ceramic, among others. Depending on the configuration of connector protector 100, no cover 120 may be required (for example, using a thick cross section of material
    110 with a known dissolution rate [00020] The connector hitch section
    130 can comprise any of a variety of methods of coupling configurations. For example, connector hitch section 130 may be configured to thread or otherwise mechanically engage hitch feature 97 of well-bottom connector 60 (for example, press fit connections, slotted C-rings, riser connector fingers, inclined ratchet members, among others). In some embodiments, the same latching features provided for attaching a downhole connector 60 to the overlapping downhole connector 70 can be used to temporarily couple connector latching section 130 with the downhole connector 60. In still
    Petition 870190011753, of 02/02/2019, p. 14/31
    11/16 other cases, connector protector modalities 100 can be fixed by means of adhesive bonding or frictional force, such as with a pressure adjustment between the protector and connector 100 and the downhole connector 60.
    [00021] Removal feature 140 is shown in this exemplary embodiment as a notched or weakened area of connector protector 100. Removal feature 140 can be shearable, breakable, or perforable. In some embodiments, the removal feature 140 can be configured to break only cover 120, thereby providing access to reactive agents, thermal conditions, or other environmental factors, to reach the underlying material 110. In still other embodiments, the removal feature removal 140 can lead to fracture of the entire connector protector 100, thereby also allowing exposure of the underlying material 110 to the various reactive components.
    [00022] In some situations, connector protector modalities 100 may further comprise a seal 150 configured to inhibit contamination of connection member 95. For example, in cases where connection member 95 is an optical fiber cable, it may it is important to prevent fragments or other contaminants from damaging the end of connection member 95. Seal 150 may be part of connector protector 100 or it may be part of well-bottom connector 60. After removal of connector protector 100 by means of breakage and / or degradation, the seal 150 can remain to seal the connection between both downhole connectors, 60 and 70.
    Petition 870190011753, of 02/02/2019, p. 15/31
    12/16 [00023] Referring generally to Figure 3, this drawing illustrates an alternative illustrative embodiment of a connector protector. The connector protector 200 can be configured for coupling with a well-bottom female connector 70, as shown in the drawing. In this illustrative example, connector guard 200 may comprise a degradable or dissolvable material 110, a cover 120, connector engagement section 230, removal feature 240, and seal 250. The downhole connector 70 may comprise a cable 190 , coupling feature 197, and connection member 95. As with the previous examples, the downhole connector 70 and connector protector 200 may be substantially cylindrical, but other embodiments may not be limited to this configuration.
    [00024] Similar reference numbers refer to similar elements and their description will not be repeated here for the sake of brevity. However, a difference in configuration from the previous description is that the connector protector 200 is adapted for coupling with a female receptacle (coupling feature 197) of the downhole connector 70. As such, instead of comprising a recess for accommodation around the latching feature 97 of the downhole connector 60, the connector protector 200 may comprise a substantially cylindrical protuberance configured for accommodation within the latching feature 197. As with the previous embodiment, the connector protector 200 can be retained within the engagement feature 197 via connector engagement section 230.
    [00025] A modality of the removal feature 240 can
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    13/16 comprises an element designed more properly than a recessed element 140 as previously described. The projected removal feature 240 can facilitate the rupture of cover 120, thereby exposing material 110 to a reactive condition or set of reactive conditions. In addition, the removal feature 240 may provide a stress concentration point for fracturing or otherwise breaking connector protector 200.
    [00026] The connector protector 200 may further comprise a seal 250 provided between the end of the downhole connector 70 and the connector protector 200. After the connector protector 200 dissolves or degrades, or is otherwise removed from the connector downhole 70, seal 250 may be free to separate from downhole connector 70. In some embodiments, seal 250 may be coupled with downhole connector 70 and remain attached after removal of the connector guard , in which case the seal 250 can be used at least in part to seal the wellhead wedding connectors 60, 70.
    [00027] The configuration of the connector protector 200 and the downhole connector 70 can create a closed void 192. In some cases, the closed void 192 can be filled with a reactive fluid or agent configured to degrade or dissolve the protector material 110 and connector 200. Cover 120 can protect material 110 until connector protector 200 is fractured, thereby releasing the reactive agent to dissolve material 110 from one or both connector protectors 100 and 200. O reactive agent should be selected so that
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    14/16 does not corrode or contaminate connection member 95.
    [00028] Turning to Figure 4, this drawing illustrates a connector protector 300 made of a dissolvable or degradable material 110 that attaches to the outer circumference of a 70-well female connector. The connector protector 300 can be coupled to the downhole connector 70 via a connector engagement section 330. The connector guard 300 may further comprise a weakened area or removal feature 340 configured to help separate the connector guard 300. The coupling of the connector guard 300 with the downhole connector 70 can create an empty space 192 configured to accommodate the engagement feature 97 of a downhole wedding connector 60 (see Figure 2). In some embodiments, the void 192 may be filled with a clean fluid provided to drive fragments away from the matching components of the downhole connectors 60 and 70 during a wet coupling connection sequence.
    [00029] The connector protector 300 is shown in this illustrative example without a cover 120 (see Figures 2 and
    3). In that case, material 110 can be configured with a reaction rate designed to provide sufficient time for the matching components to be lowered to the bottom of the well before dissolving. In other situations, a reactive fluid may be provided at the bottom of the well to chemically or thermally cause the material to dissolve 110.
    [00030] Referring generally to Figure 5, this drawing illustrates an exemplary modality of a connector protector 400 in cross-section and side view.
    Petition 870190011753, of 02/02/2019, p. 18/31
    15/16 end. Removal features 440 can be provided on one or both surfaces when viewed along a central axis of connector guard 400 in cross-sectional view. In addition, the removal features 440 can be provided on one or both circumferences, inner and outer, of connector guard 400 as seen in the end view. In some embodiments, the 440 removal capabilities can be areas of highly reactive or weakened material interspersed with slower reactive material. As shown, some removal features 440 may be in the form of a recessed or embossed pattern provided on one or more surfaces of a connector protector 400.
    [00031] In some exemplary connector protector embodiments, such as connector protector 500 shown in Figure 6, removal features 540 may include a combination of recesses and protrusions. For example, connector protector 500 is shown comprising a non-limiting embodiment of a snap-fit connection, i.e., riser connector fingers 530. The riser connector fingers 530 can interact with recesses, protrusions, or some other coupling feature in the corresponding downhole connector (not shown in this figure). In this specific embodiment, connector protector 500 would comprise four riser connector fingers, although only three can be seen in the cross-sectional view.
    [00032] Another alternative modality of a connector protector 600 can be seen in Figure 7. In this illustrative case, the cover 620 for the dissolvable material 110
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    16/16 may include a chamber 650 configured to terminate an agent or reactive fluid. During a wet coupling connection sequence, between two downhole connectors, the cover 620 of one or both connector protectors can be broken or broken, allowing the reactive agent or fluid to contact and dissolve the underlying material 110 The amount of reactive agent or fluid can be determined to dissolve one or both of the 600 connector protectors (for example, if two 600 connector protectors are used). However, only a connector protector 600 can have a chamber 650 filled with reactive material. The connector protector 600 can be coupled with the
    connector background well (no shown ) per through a section of hitch like the threaded section 130 shown in the figure.[00033] Although the invention have been revealed with
    With respect to a limited number of modalities, those skilled in the art, with the benefit of this disclosure, will consider various modifications and variations from it. The appended claims are intended to cover such modifications and variations as understood in the true essence and scope of the invention.
    权利要求:
    Claims (3)
    [1]
    1. Connector protector, characterized by comprising:
    a body comprising a material that is dissolvable or degradable when exposed to one or more conditions configured to dissolve or degrade the material;
    a connector interface configured to attach to a downhole connector; and a removal feature to make it easier to break the connector protector to allow for interlocking downhole.
    connectors
    2 . Protector connector, in wake up with The claim 1, characterized in that the body be covered with a coating configured for inhibit dissolution or degradation of the body. 3. Protector connector, in wake up with The claim 1, characterized in that the interface connector understand threads. 4. Protector connector, in wake up with The claim 1, characterized in that the interface connector understand a connector for riser. 5. Protector connector, in wake up with The
    The connector interface of claim 1, characterized in that it comprises a split C-ring.
    6. Method to protect connectors during a marriage sequence characterized by comprising:
    cover at least one of a pair of downhole wells, matching bottomhole connectors with a dissolvable or degradable connector protector;
    Petition 870190011753, of 02/02/2019, p. 21/31
    [2]
    2/3 break a coating on the dissolvable or degradable connector protector during marriage of downhole connectors; and exposing the dissolvable or degradable connector protector to conditions that dissolve or degrade the dissolvable or degradable connector protector, wherein the breaking step further comprises releasing a liquid agent configured to dissolve the dissolvable connector protector stored in the liner.
    7. Method according to claim 6,
    featured for a roof understand still fix in coiled shape the protector in connector dissolvable or degradable to fur one less From bottom connectors in
    well.
    8. Method , according with claim 6, characterized by the connectors in rock bottom can be hydraulic, electric or in optical fiber or a
    combination of downhole connectors.
    Method according to claim 6, characterized in that the cover further comprises fixing the dissolvable connector protector to at least one of the downhole connectors by means of a pressure fitting connection.
    Method according to claim 6, characterized in that the cover further comprises fixing the dissolvable connector protector to at least one of the downhole connectors by means of an adhesive material.
    11. Method according to claim 6, characterized in that the exposure further comprises providing a
    Petition 870190011753, of 02/02/2019, p. 22/31
    [3]
    3/3 liquid agent configured to dissolve or degrade the dissolvable or degradable connector protector next to the dissolvable or degradable connector protector.
    12. Method according to claim 6, characterized in that the exposure further comprises increasing a temperature close to the dissolvable or degradable connector protector.
    13. Method according to claim 6, characterized in that each of the pair of downhole connectors is covered with a dissolvable connector protector.
    14. Downhole connector protector, characterized by the fact that it comprises:
    a body comprising a dissolvable material and containing a recess configured to couple with a downhole connector; and a coating configured to control dissolution of the body, wherein the coating further comprises a compartment including a material for dissolving or degrading the body.
    Shaft-bottom connector protector according to claim 14, characterized in that the coating is a non-permeable material.
    Shaft connector protector according to claim 14, characterized in that the coating is a controlled permeable material.
    17. Downhole connector protector according to claim 14, characterized in that the body is configured to couple with a downhole connector by means of a snap-fit coupling.
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    法律状态:
    2018-12-04| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-03-26| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2019-06-11| B25A| Requested transfer of rights approved|Owner name: SCHLUMBERGER HOLDINGS LIMITED (VG) |
    2019-06-18| 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 03/09/2010, OBSERVADAS AS CONDICOES LEGAIS. (CO) 20 (VINTE) ANOS CONTADOS A PARTIR DE 03/09/2010, OBSERVADAS AS CONDICOES LEGAIS |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/556,286|US8113290B2|2009-09-09|2009-09-09|Dissolvable connector guard|
    US12/556,286|2009-09-09|
    PCT/US2010/047875|WO2011031641A2|2009-09-09|2010-09-03|Dissolvable connector guard|
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