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公开(公告)号：US11643892B2
公开(公告)日：2023-05-09
申请号：US17580028
申请日：2022-01-20
IPC分类号： E21B23/01 , E21B33/128 , E21B33/129 , E21B29/00
CPC分类号： E21B23/01 , E21B33/128 , E21B33/1293 , E21B29/005
摘要： A method of separating a downhole tubular includes running a tool into a wellbore to a predetermined location on a work string and actuating flow actuated slips. The method also includes maintaining slips in a set position by providing a first upward force on the work string. The method further includes rotating the work string to separate an upper portion of the tubular from a lower portion using a cutter assembly disposed on the work string below the slips and pulling the upper portion of the tubing and the tool from the wellbore.
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公开(公告)号：US11248428B2
公开(公告)日：2022-02-15
申请号：US16270426
申请日：2019-02-07
IPC分类号： E21B23/01 , E21B33/128 , E21B33/129 , E21B29/00
摘要： A method and apparatus for a locking system for a downhole tool. The locking system includes a first portion having a plurality of displaceable members, a second portion disposed around the first portion; a locked position wherein axial movement between the members is prevented; and an unlocked position wherein axial movement between the members is permitted.
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公开(公告)号：US11053741B1
公开(公告)日：2021-07-06
申请号：US16894577
申请日：2020-06-05
发明人： Richard C. Davis , Jeremy Lee Stone , James H. Taylor, Jr. , William Allen Schultz, Jr. , David W. Teale
摘要： A sidetrack assembly for forming a lateral wellbore includes a cutting device having a body having a passage, and a mill head configured to connect to the body so that an interior of the mill head and the body form a pressure chamber in fluid communication with the outlet passage. The mill head includes a first port in fluid communication with the pressure chamber, a second port in fluid communication with the pressure chamber, and a blade arranged on a face of the mill head. A whipstock connected to the cutting device includes a tubing having a first end removably inserted in the first port and the passage and a second end connectable to a downhole tool, an inclined surface for guiding the mill at a non-zero angle relative to a central axis of an existing wellbore, and an attachment section removably connecting the cutting device and the whipstock.
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公开(公告)号：US10808481B2
公开(公告)日：2020-10-20
申请号：US15815594
申请日：2017-11-16
摘要： A tool for cutting a tubular includes a housing, a first blade having a first cutting surface, and a second blade having a second cutting surface. The first blade and the second blade are configured to move between an extended position and a retracted position. The first blade and the second blade are disposed in the housing in the retracted position. The first cutting surface and the second cutting surface overlap in the retracted position. In another embodiment, a tool for cutting a tubular in a wellbore, includes a housing having a longitudinal axis; a pin connected to the housing and disposed on a first side of the longitudinal axis; and a blade including a cutting surface, the blade configured to move between an extended position and a retracted position about the pin, wherein the cutting surface is disposed at least in part on a second side of the longitudinal axis in the retracted position.
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公开(公告)号：US10458196B2
公开(公告)日：2019-10-29
申请号：US15454921
申请日：2017-03-09
IPC分类号： E21B31/16 , E21B33/1295 , E21B29/00 , E21B33/126 , E21B29/02
摘要： A method and apparatus for cutting and pulling a casing string from a well. A downhole casing pulling tool includes a tubular housing having a bore therethrough, a packer assembly configured to isolate an annulus between a casing and the tool, a slip assembly configured to engage the casing, and a piston assembly disposed in the bore of the tubular housing. The piston assembly is configured to operate an actuator, wherein the actuator is configured to operate at least one of the packer assembly and the slip assembly and modify a fluid pressure in the bore of the tubular housing.
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