• 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:
    An annular safety valve that is positionable in a wellbore may include a housing having an opening extending through the housing to allow to allow pressure to transmit between a first annular area of the wellbore below the annular safety valve and a second annular area of the wellbore above the annular safety valve. The housing can define the opening by a seat face. A poppet may extend through the opening. A groove may at least partially surrounding the seat face for maintaining a shape of the seat face in response to an increase in pressure in the first area of the wellbore. The shape of the seat face may correspond to a surface of the poppet for preventing pressure from transmitting between the first annular area of the wellbore and the second annular area of the wellbore when the annular safety valve is in a closed position.
    公开号:NL2024074A
    申请号:NL2024074
    申请日:2019-10-22
    公开日:2020-06-26
    发明作者:Cardno Brown Irvine；George Taylor Ronald；Ann Davies Katherine；Derek Walter Inglis Peter
    申请人:Halliburton Energy Services Inc；
    IPC主号:
    专利说明:

    [0001] [0001] This application claims the benefit of U.S. Provisional Application No. 62/773640, filed on November 30, 2018, entitled Annular Safety Valve with Groove Around Port, the contents of which is hereby incorporated in its entirety by this reference. Technical Field
    [0002] [0002] The present disclosure relates generally to an annular safety valve (ASV) that can be positioned downhole within a wellbore, and more particularly (although not necessarily exclusively), to an ASV that includes a groove positioned around a port or an opening of the ASV. Background
    [0003] [0003] An ASV may be a part of a completion string that is positionable downhole in a wellbore. The ASV can actuate between an open and a closed position. The ASV can include a housing having one or more openings for gas injection. The ASV can further include a poppet positioned within the opening. A surface region of the poppet can close or seal against a seat of the opening in the closed position. In the open position, the poppet may not close or seal the opening such that under normal gas injection conditions, the ASV allows gas injection to move past the ASV. In some ASV designs, for example designs in which the ASV has a narrow or slim wall section, the openings in the housing (or ports) can take up a significant proportion of the wall section. This can result in a highly stressed section where the openings are located. The internal pressure trapped below the ASV can create a hoop stress within the wall section as the parts try to expand due to this internal pressure. This expansion can result in distorting the openings and as a result the seat face. The openings can effectively change shape from round to oval, which may cause the poppet(s) to not properly seal to the seat surrounding the opening such that the ASV leaks at higher pressures as the seat no longer matches the poppet geometry. Brief Description of the Drawings
    [0004] [0004] FIG. 1 is a schematic illustration of a well system including an ASV positioned within a wellbore, according to one aspect of the present disclosure.
    [0005] [0005] FIG. 2 is a cross-sectional side view of part of an ASV, according to one aspect of the present disclosure.
    [0006] [0006] FIG. 3A is perspective view of a part of the ASV of FIG. 2, according to one aspect of the present disclosure.
    [0007] [0007] FIG. 3B is an enlarged perspective view of part of the ASV shown in FIG. 3A, according to one aspect of the present disclosure.
    [0008] [0008] FIG. 4. is a top view of part of the ASV of FIGS. 3A, 3B, according to one aspect of the present disclosure. {0009] FIG. 5 is a cross-sectional side view of part of an ASV, according to one aspect of the present disclosure.
    [00011] [00011] In some aspects of the present disclosure, the ASV may include a groove (or a recess) around at least part of an outer diameter of a seat of an ASV. The groove may provide an improved metal-to-metal gas seal for the ASV. The groove may be trepanned into the housing proximate to the seat to prevent the seat from changing shape due to pressure below the ASV.
    [00012] [00012] In some aspects of the present disclosure, a seat insert may be positioned within the opening and seat region of an ASV. The seat insert may define a surface the poppet of the ASV seals against when the ASV is in the closed position. The seat insert may be formed separately from the housing or may be formed integrally with the housing. The seat insert may move independently from the remainder of the housing such that the seat insert doesn’t deform in response to the remainder of the housing deforming. For example, the seat insert may not deform when the remainder of the housing deforms in response to high pressure below the ASV.
    [00013] [00013] tHustrative examples are given to introduce the reader to the general subject matter discussed here and are not intended to limit the scope of the disclosed concepts. The following describes various additional features and examples, but should not be used to limit the present disclosure.
    [00014] [00014] FIG. 1 is a schematic illustration of a well system 10 having a wellbore assembly according to one aspect of the present disclosure. The well system 10 includes a borehole that is a wellbore 12 extending through a surface 14 and various earth strata. The well system 10 may be a land based well system or a sea based well system. A casing string 13 may be positioned within the wellbore 12, and a tubing string 15 may be positioned within the casing string 13. The tubing string 15 may be for example a completion string. The tubing string 15 may include an ASV 16. The ASV 16 may provide a communication path in an annular area between the tubing string 15 and the casing string 13. The ASV 16 may have an open position to allow pressure to transmit between a first annular area 18 of the wellbore 12 (e.g. annular area between the casing string 13 and the tubing string 15) below the ASV 16 and a second annular area 20 of the wellbore (e.g. annular area between the casing string 13 and the tubing string 15) above the ASV 16. The ASV 16 may have a closed position to prevent pressure to transmit between the first annular area 18 of the wellbore 12 below the ASV 16 and the second annular area 20 of the wellbore 12 above the ASV 16.
    [00015] [00015] FIG. 2 is a cross-sectional side view of part of an ASV 100 according to an example of the present disclosure. The ASV 100, which could for example be the ASV 16, includes a poppet 102 seated in an opening 104 of a housing 105. The ASV 100 is depicted in a closed position in FIG.
    [00016] [00016] The groove 112 can isolate the seat 110 of the housing 105 against which the poppet 102 seats or seals from the influence of a deformation in the housing 105 due to internal pressure below the ASV 100. Without the groove 112, increased pressure in the annulus below the ASV 100 can cause hoop stress within the housing 105 to cause the housing 105 to deform unevenly around the opening which may cause the seat 110 to also deform unevenly. An uneven deformation of the seat 110 can cause the geometry of the seat 110 to no longer match the geometry of the poppet 102, in particular the sealing face 106 of the poppet 102 such that the poppet 102 does not seal against the seat 110 in the closed position. The groove 112 can prevent the uneven deformation of the seat 110 and provide for improved sealing between the poppet 102 and the seat 110 even when increased pressure below the ASV may cause the housing 105 to deform. The groove 112, for example, may provide a space within which the housing 105 may deform without causing any deformation to the shape of the seat 110. The groove 112 may be trepanned, it may be 3D printed as a part of the housing 105, it may be formed via spark eroding or other suitable methods.
    [00017] [00017] FIG. 3A is a perspective view of a portion of the housing 105 of the ASV 100 shown in FIG. 2. While FIG. 3A depicts two openings 104, 120 in the housing 105, more or fewer openings (and corresponding poppets) may be used. The openings 104, 120 may be axial openings for gas injection according to an example of the present disclosure. The openings 104, 120 may also be referred to as ports. FIG. 3B also depicts an enlarged view of the openings 104, 120, seats 110, 122, and grooves 112, 124. Seats 110, 122 surround the openings 104, 120 for receiving and sealing against respective poppets (not shown for ease of viewing the openings 104, 120 and seats 110, 122) of the ASV 100. Grooves or recesses 112, 124, are positioned around seats 110, 122. Though the grooves 112, 124 are shown as extending entirely around the seats 110, 122 in FIGS. 3A, 3B, in some examples the grooves 112, 124, may only extend partially around the seats 110, 122. In some aspects, one or more grooves may extend around at least partially around the seats 110, 122, for example two grooves may together partially encircle a seat. In some examples, the grooves 112, 124 can be formed by a trepanning process, though other suitable methods for creating the grooves 112, 124 may be used in other examples. In addition, though the grooves 112, 124, are shown as having a generally rectangular cross section in some examples the grooves 112, 124 may have a different cross-sectional shape.
    [00018] [00018] As described above with respect to FIG. 2, the grooves 112, 124 can separate a portion of the seats 110, 122 from the other portions of the housing 200. The separation between
    [00020] [00020] FIG. 5 depicts a portion of an ASV 400 according to an aspect of the present disclosure in which a seat insert 402 is provided about a seat 404 of the housing 406. A poppet 408 of the ASV 400 includes a sealing face 412 that contacts, interfaces with, or seals against a seat face 410 of the seat insert 402. The seat insert 402 may have an interference fit within an opening or port 411 of the housing 406. In some aspects, the seat insert 402 may be press fit within the opening or port 411 of the housing 406. In some aspects, the seat insert 402 may be shrink fit within the opening or port 411 of the housing 406. The seat insert 402 can be the same material as the housing 406 or may be a different material including but not limited to a metallic material, a polymer material, or another suitable material for providing a seal between the seat insert 402 and the sealing face 412 of the poppet 408. In some aspects, the seat insert 402 may comprise an Inconel Alloy 718 (UNS No. 7718} with a minimum yield strength of 125,000 Ibs/in2 and a maximum hardness of 40 Rc, though other materials may be used. The seat insert 402 may extend above the opening 411. The seat insert 402 may be formed independently from the housing 406 such that the
    [00021] [00021] As used below, any reference to a series of examples is to be understood as a reference to each of those examples disjunctively (e.g., "Examples 1-4” is to be understood as "Examples 1, 2, 3, or 4").
    [00022] [00022] Example 1 is an annular safety valve positionable in a wellbore, the annular safety valve comprising: a housing having an opening extending through the housing to allow to allow pressure to transmit between a first annular area of the wellbore below the annular safety valve and a second annular area of the wellbore above the annular safety valve, wherein the housing defines the opening by a seat face; a poppet extending through the opening; and a groove at least partially surrounding the seat face for maintaining a shape of the seat face in response to an increase in pressure in the first annular area of the wellbore, wherein the shape of the seat face corresponds to a surface of the poppet for preventing pressure from transmitting between the first annular area of the wellbore and the second annular area of the wellbore when the annular safety valve is in a closed position.
    [00023] [00023] Example 2 is the annular safety valve of example(s) 1, further comprising: a second opening, wherein the housing defines the second opening by a second seat face; a second poppet extending through the second opening; and a second groove at least partially surrounding the second seat face for maintaining a shape of the second seat face in response to an increase in pressure in the first annular area of the wellbore, wherein the shape of the second seat face corresponds to a surface of the second poppet for preventing pressure from transmitting between
    [00024] [00024] Example 3 is the annular safety valve of example(s) 1-2, wherein the groove surrounds the seat face entirely.
    [00026] [00026] Example 5 is the annular safety valve of example(s) 1-4, further comprising at least two additional openings, each opening of the two additional openings is associated with a respective groove at least partially surrounding each of the at least two additional openings.
    [00028] [00028] Example 7 is an annular safety valve positionable in a wellbore, the annular safety valve comprising: a housing having an opening extending through the housing to allow pressure to transmit between a first annular area of the wellbore below the annular safety valve and a second annular area of the wellbore above the annular safety valve; and a poppet extending through the opening; at least one of (a) a seat insert positioned within opening, the seat insert having a sealing surface for maintaining a shape of the sealing surface in response to an increase in pressure in the first annular area of the wellbore, wherein the shape of the sealing surface corresponds to a surface of the poppet for preventing pressure from transmitting between the first annular area of the wellbore and the second annular area of the wellbore when the annular safety valve is in a closed position in response to an increase in pressure in the first annular area of the wellbore, or (b} a groove at least partially surrounding the opening for maintaining a shape of the seat face in response to an increase in pressure in the first annular area of the wellbore, wherein the shape of the seat face corresponds to a surface of the poppet for preventing pressure from transmitting between the first annular area of the wellbore and the second annular area of the wellbore when the annular safety valve is in a closed position.
    [00029] [00029] Example 8 is the annular safety valve of example(s) 7, further comprising: a second opening in the housing; a second poppet extending through the second opening; and a second seat insert positioned within second opening, the second seat insert having a second sealing surface for
    [00030] [00030] Example 9 is the annular safety valve of example(s) 7-8, further comprising at least two additional openings, each opening of the two additional openings is associated with a respective seat insert extending within each opening of the at least two additional openings.
    [00031] [00031] Example 10 is the annular safety valve of example(s} 7-8, wherein the housing comprises a first material and wherein the seat insert comprises the first material.
    [00032] [00032] Example 11 is the annular safety valve of examples} 7-10, wherein the housing comprises a first material and wherein the seat insert comprises a second material that is different from the first material.
    [00033] [00033] Example 12 is the annular safety valve of example(s) 11, wherein the first material has a lower yield strength than the second material.
    [00034] [00034] Example 13 is the annular safety valve of example(s} 7-12 wherein the seat insert comprises a polymer material.
    [00035] [00035] Example 14 is the annular safety valve of example(s) 7-12, wherein the seat insert comprises a metallic material.
    [00036] [00036] Example 15 is the annular safety valve of example(s} 7-14, wherein the sealing surface of the seat insert has a concave shape and wherein the surface of the poppet has a convex shape.
    [00037] [00037] Example 16 is the annular safety valve of example(s) 7-15, further comprising a groove at least partially surrounding the opening for aiding in maintaining the shape of the sealing surface in response to an increase in pressure in the first annular area of the wellbore.
    [00038] [00038] Example 17 is a downhole assembly positionable within a casing string of a wellbore comprising: a completion string including an annular safety valve, wherein the annular safety valve further comprises: a housing having a plurality of openings extending through the housing to allow to allow pressure to transmit between a first annular area of the wellbore below the annular safety valve and a second annular area of the wellbore above the annular safety valve, a plurality of seat faces, each seat face of the plurality of seat faces defining an opening of the plurality of openings; a plurality of poppets, each poppet of the plurality of poppets extending through a respective opening of the plurality of openings, wherein each poppet of the plurality of poppets has a surface that corresponds to a surface of each respective seat face for preventing pressure from transmitting
    [00039] [00039] Example 18 is the downhole assembly of examples) 17, wherein each of the grooves of the plurality of grooves extends entirely around the respective seat face of the plurality of seat faces.
    [00040] [00040] Example 19 is the downhole assembly of example(s) 17, wherein at least one of the grooves of the plurality of grooves extends only partially around at least one respective seat face of the plurality of seat faces.
    [00041] [00041] Example 20 is the downhole assembly of examples) 17, wherein each of the grooves of the plurality of grooves is a trepanned groove.
    [00042] [00042] The foregoing description of certain embodiments, including illustrated embodiments, has been presented only for the purpose of illustration and description and is not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Numerous modifications, adaptations, combinations, and uses thereof are possible without departing from the scope of the disclosure.
    权利要求:
    Claims (20)
    [1]
    An annular safety valve that can be positioned in a wellbore, the annular safety valve comprising: a housing having an opening extending through the opening to allow pressure to be sent between a first annular area of the wellbore below the annular safety valve and a second annular region of the wellbore above the annular safety valve, the housing defining the opening by a seating surface; a saucer extending through the opening; and a groove that at least partially surrounds the seating surface to maintain a shape of the seating surface in response to an increase in pressure in the first annular region of the wellbore, the shape of the seating surface corresponding to a surface of the dish for prevent pressure from being sent between the first annular area of the well and the second annular area of the well when the annular safety valve is in a closed position.
    [2]
    The annular safety valve of any of the preceding claims, further comprising: a second opening, the housing defining the second opening by a second seating surface; a second tray extending through the second opening; and a second groove that at least partially surrounds the second seating surface to maintain a shape of the second seating surface in response to an increase in pressure in the first annular region of the wellbore, the shape of the second seating surface corresponding to an area of the second tray for preventing pressure from being sent between the first annular region of the well and the second annular region of the well when the annular safety valve is in the closed position.
    [3]
    An annular safety valve one or more of the preceding claims or 2, wherein the groove completely surrounds the seating surface.
    [4]
    An annular safety valve according to one or more of the preceding claims, the groove is a drilled groove.
    -11-
    [5]
    An annular safety valve one or more of the preceding claims, further comprising at least two additional openings, each opening of the two additional openings being associated with a respective groove at least partially surrounding each of the at least two additional openings.
    [6]
    An annular safety valve one or more of the preceding claims, further comprising a seat insert positioned within the opening, the seat insert having a seat surface for maintaining a shape of the seat surface in response to an increase in pressure in the first annular area of the wellbore, the shape of the seating surface corresponding to a surface of the tray for preventing pressure from being sent between the first annular area of the wellbore and the second annular area of the wellbore when the annular safety valve is in a closed position as response to an increase in pressure in the first annular region of the well.
    [7]
    An annular safety valve that can be placed in a wellbore, the annular safety valve comprising: a housing having an opening defined by a seating surface, the opening extending through the opening to allow pressure to be sent between a first annular area of the well below the annular safety valve and a second annular area of the well above the annular safety valve; and a saucer extending through the opening; and at least one of (a) a seating insert positioned within the opening, the seating insert having a sealing surface for retaining a shape of the sealing surface in response to an increase in pressure in the first annular region of the wellbore, the shape of the sealing surface corresponds to a surface of the tray for preventing pressure from being sent between the first annular region of the well and the second annular region of the well when the annular safety valve is in a closed position in response to an increase in pressure in the first annular region of the well, or (b} a groove that at least partially surrounds the opening to maintain a shape of the seating surface in response to an increase in pressure in the first annular region of the well, the shape of the seating surface corresponds to a surface of the saucer to prevent pressure sent between the first annular region and
    -12- the second annular region of the wellbore when the annular safety valve is in a closed position.
    [8]
    An annular safety valve according to claim 7, further comprising: a second opening in the housing; a second tray extending through the second opening; and a second seating insert positioned within the second opening, the second seating insert having a second sealing surface for retaining a shape of the second sealing surface in response to an increase in pressure in the first annular region of the wellbore, the shape of the second sealing surface corresponds to a surface of the second tray for preventing pressure from being sent between the first annular region of the wellbore and the second annular region of the wellbore when the annular safety notch is in the closed position.
    [9]
    An annular safety valve according to claim 7 or 8, further comprising at least two additional openings, each opening of the two additional openings being associated with a respective seating insert extending within each opening of the at least two additional openings.
    [10]
    An annular safety valve according to claim 7, wherein the housing comprises a first material and wherein the seat insert comprises the first material.
    [11]
    An annular safety valve according to one or more of claims 7-10, wherein the housing comprises a first material and wherein the seat insert comprises a second material different from the first material.
    [12]
    An annular safety valve according to any of claims 7-11, wherein the first material has a lower tensile strength than the second material.
    [13]
    An annular safety valve according to any of claims 7-12, wherein the seat insert comprises a polymeric material.
    -13-
    [14]
    An annular safety valve according to one or more of claims 7-13, wherein the seat insert comprises a metal material.
    [15]
    An annular safety valve according to one or more of claims 7-14, wherein the seating surface of the seating insert has a concave shape and wherein the surface of the saucer has a convex shape.
    [16]
    An annular safety valve according to any of claims 7-15, wherein the annular safety valve comprises both the seat insert positioned within the opening and the groove that at least partially surrounds the opening.
    [17]
    A borehole assembly that can be positioned within a wellbore drill string comprising: a completion column comprising an annular safety valve, the annular safety valve further comprising: a housing having a plurality of openings extending through the opening to allow access that pressure is sent between a first annular region of the well below the annular safety valve and a second annular region of the well above the annular safety valve, a plurality of seating surfaces, each seating surface of the plurality of seating surfaces defining an opening of the plurality of openings ; a plurality of trays, each tray of the plurality of trays extending through a respective opening of the plurality of openings, each tray of the plurality of trays having a surface corresponding to a surface of each respective seating surface to prevent pressure is sent between the first annular region of the borehole and the second annular region of the borehole when the annular safety valve is in a closed position; and a plurality of grooves, each groove of the plurality of grooves extending at least partially around a respective seating surface of the plurality of seating surfaces to maintain a shape of the respective seating surface in response to an increase in pressure in the first annular region from the well,
    -14 -
    [18]
    The borehole assembly of claim 17, wherein each of the grooves of the plurality of grooves extends completely around the respective seating surface of the plurality of seating surfaces.
    [19]
    A borehole assembly according to any one of claims 17-18, wherein at least one of the grooves of the plurality of grooves extends only partially around the respective seating surface of the plurality of seating surfaces.
    [20]
    A borehole assembly according to any of claims 17-19, wherein each of the grooves of the plurality of grooves is a pierced groove.
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    同族专利:
    公开号 | 公开日
    WO2020112269A1|2020-06-04|
    NO20210504A1|2021-04-26|
    NL2024074B1|2020-11-05|
    US20200173578A1|2020-06-04|
    CA3111014A1|2020-06-04|
    GB2593304A|2021-09-22|
    US11261997B2|2022-03-01|
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    AU2019390237A1|2021-03-04|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US201862773640P| true| 2018-11-30|2018-11-30|
    US16/655,359|US11261997B2|2018-11-30|2019-10-17|Annular safety valve|
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