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公开(公告)号：US12006801B2
公开(公告)日：2024-06-11
申请号：US17583898
申请日：2022-01-25
CPC分类号： E21B43/108 , E21B23/01 , E21B43/103 , E21B43/105
摘要： An expandable liner hanger includes an anchoring element having multiple circumferential ridges that include flow relief grooves which prevent buildup of hydrostatic pressure between the liner hanger and well casing during expansion of the liner hanger. Upon liner hanger expansion the ridges come in high interference with wellbore casing and couple the liner hanger to the wellbore casing. According to another embodiment of the invention, the ridges are formed by a spiral ridge extending along an outer periphery of the hanger thus providing a pressure relief passage for the fluid.
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公开(公告)号：US11788388B2
公开(公告)日：2023-10-17
申请号：US16950813
申请日：2020-11-17
CPC分类号： E21B43/105 , E21B29/10 , E21B43/103
摘要： A casing patch system comprising a base tubular with two anchor/seals coupled to the base tubular and an expansion tool comprising two expansion devices positioned such that upon expansion of the first anchor/seal, the second expansion device engages the second anchor/seal. In another embodiment, the expansion device comprises two swages coupled to a shaft at a distance between them approximately equal to the length of the anchor/seal. The swage diameters are selected such that the expansion forces of the anchor/seal by front and back swages are approximately equal.
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公开(公告)号：US11560769B2
公开(公告)日：2023-01-24
申请号：US17707544
申请日：2022-03-29
IPC分类号： E21B33/124 , E21B23/12
摘要： A method and apparatus for patching damaged areas in a well includes a top and a bottom patching section which include an anchor/sealing member for securing the apparatus within the well. One or more extension patch sections are connected between the top and bottom patch sections. The top and bottom patch elements are placed above and below the damaged area to isolate the damaged area from the exterior flow portion of the well.
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公开(公告)号：US20220220822A1
公开(公告)日：2022-07-14
申请号：US17707544
申请日：2022-03-29
IPC分类号： E21B33/124 , E21B23/12
摘要： A method and apparatus for patching damaged areas in a well includes a top and a bottom patching section which include an anchor/sealing member for securing the apparatus within the well. One or more extension patch sections are connected between the top and bottom patch sections. The top and bottom patch elements are placed above and below the damaged area to isolate the damaged area from the exterior flow portion of the well.
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公开(公告)号：US20230167835A1
公开(公告)日：2023-06-01
申请号：US17922458
申请日：2021-07-15
CPC分类号： F15B15/1404 , F15B11/20
摘要： A hydraulic thruster system for providing an axial force. In one embodiment, the system comprises a pump, a motor for driving the pump, and a hydraulic thruster comprising: a cylinder comprising a plurality of cylinder pistons; a shaft comprising a plurality of shaft pistons; a plurality of first pressure chambers; and a plurality of second pressure chambers, wherein the plurality of shaft pistons are positioned inside the cylinder, between the cylinder pistons to form the plurality of first and a second pressure chambers, wherein the shaft further comprises a first fluid passage connected to the pump and to the first pressure chambers, and a second fluid passage connected to the pump and to the second pressure chambers, and wherein the pump may pump fluid into the first pressure chambers and suction fluid from the second pressure chambers providing an axial force between the shaft and the cylinder.
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公开(公告)号：US11702892B2
公开(公告)日：2023-07-18
申请号：US17376094
申请日：2021-07-14
IPC分类号： E21B17/02
CPC分类号： E21B17/021
摘要： A disconnect device for use as part of a downhole assembly in an oil or gas well. In one embodiment, the device comprises a lower receptacle assembly comprising a recess profile; an upper assembly comprising: a shaft comprising a fluid passage, a collet comprising collet fingers, a piston, a cylinder assembly, a pressure chamber disposed radially between the shaft and the cylinder assembly, and a spring, wherein the piston is selectively movable into three positions.
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公开(公告)号：US11530586B2
公开(公告)日：2022-12-20
申请号：US16950818
申请日：2020-11-17
摘要： A casing patch system comprising a base tubular with two anchor/seals coupled to the base tubular and an expansion tool comprising two expansion devices positioned such that upon expansion of the first anchor/seal, the second expansion device engages the second anchor/seal, which allows reduction of the expansion forces due to sequential expansion and reduces the length of the displacement necessary for setting the casing patch, eliminating the need for resetting the thruster, which allows deployment and setting of the casing patch on a wireline. In another embodiment, the expansion device comprises two swages coupled to a shaft at a distance between them approximately equal to the length of the anchor/seal. The swage diameters are selected such that the expansion forces of the anchor/seal by front and back swages are approximately equal, resulting in significantly less expansion force compared to the expansion force necessary for expansion by a single swage, which allows a high degree of anchor/seal expansions unachievable by single swage expansion devices.
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