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公开(公告)号：US11629565B1
公开(公告)日：2023-04-18
申请号：US17514217
申请日：2021-10-29
发明人： Simon Whye Kwong Wai
IPC分类号： E21B23/00
摘要： A downhole tractor assembly operable in a wellbore that includes a tractor body and a tractor wheel assembly. The tractor wheel assembly includes a tractor wheel with teeth around a circumference of the wheel and grooves between adjacent teeth. The grooves include a profile in a plane parallel with the axis of the wheel. Also, each tooth includes an outer face with face grooves on each side of the outer face that extend less than across the wheel.
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公开(公告)号：US20220259933A1
公开(公告)日：2022-08-18
申请号：US17628530
申请日：2019-08-16
摘要： Provided are compositions, methods, and systems that relate to downhole tractor wheels. A downhole tractor system comprising: tubular housing capable of being deployed downhole by wireline; plurality of wheels rotatably mounted to tubular housing, wheels having at least a portion of an outer surface comprising polymeric material. A method for conveying a downhole tool along an inner wall of a wellbore, the method comprising: disposing downhole tool coupled to downhole tractor within wellbore; providing energy to downhole tractor by way of wireline thereby rotating a wheel disposed on downhole tractor; frictionally engaging the inner wall of wellbore with wheel comprising polymeric material disposed on at least a portion of an outer surface of wheel thereby providing a compressive load between the inner wall of the wellbore and polymeric material; allowing downhole tractor to proceed along wellbore wall until downhole tractor reaches desired location; deploying downhole tool for use in wellbore.
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公开(公告)号：US10041319B2
公开(公告)日：2018-08-07
申请号：US15541985
申请日：2015-02-13
发明人： Simon Whye Kwong Wai
摘要： According to one aspect, a downhole apparatus includes an anchor element mechanically coupled between first and second housings and linked to move radially between first and second radial positions; and a high torque electromechanical transmission drive; wherein the anchor element is adapted to engage a preexisting structure when the downhole apparatus extends within the preexisting structure, the high torque electromechanical transmission drive is energized, and the anchor element is in the second radial position; and wherein the high torque electromechanical transmission drive is failsafe in that the anchor element is permitted to move radially from the second radial position towards the first radial position in response to de-energization of the high torque electromechanical transmission drive. In several embodiments, the preexisting structure is a casing positioned within a wellbore that traverses a subterranean formation.
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公开(公告)号：US20170356261A1
公开(公告)日：2017-12-14
申请号：US15541985
申请日：2015-02-13
发明人： Simon Whye Kwong Wai
CPC分类号： E21B23/01 , F16H25/2204 , F16H2025/2043 , F16H2025/2071
摘要： According to one aspect, a downhole apparatus includes an anchor element mechanically coupled between first and second housings and linked to move radially between first and second radial positions; and a high torque electromechanical trans mission drive; wherein the anchor element is adapted to engage a preexisting structure when the downhole apparatus extends within the preexisting structure, the high torque electromechanical transmission drive is energized, and the anchor element is in the second radial position; and wherein the high torque electromechanical transmission drive is failsafe in that the anchor element is permitted to move radially from the second radial position towards the first radial position in response to de-energization of the high torque electromechanical transmission drive. In several embodiments, the preexisting structure is a casing positioned within a wellbore that traverses a subterranean formation.
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公开(公告)号：US12110750B2
公开(公告)日：2024-10-08
申请号：US18096196
申请日：2023-01-12
发明人： Simon Whye Kwong Wai , Wei Zhang
摘要： A downhole anchoring mechanism configured to anchor a downhole tool assembly to a target location within an oilfield tubular. The anchoring mechanism comprises an anchor pad, a first arm coupled to a first hub and the anchor pad, and an extension mechanism coupled to a wedge hub and the anchor pad. The anchor pad is configured to extend radially outwards by the tapered surface of the wedge hub to engage an inner surface of a small oilfield tubular in response to the extension mechanism being configured in a deactivated mode. The anchor pad is configured to be extended radially outwards by the first arm and the extension mechanism to engage the inner surface of a large oilfield tubular in response to the extension mechanism being configured in an activated mode. The extension mechanism is a telescopic arm assembly or a sliding axle assembly.
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公开(公告)号：US11814914B1
公开(公告)日：2023-11-14
申请号：US17842437
申请日：2022-06-16
发明人： Simon Whye Kwong Wai
IPC分类号： E21B23/00
CPC分类号： E21B23/001 , E21B23/00
摘要： Systems and methods of the present disclosure relates to propelling downhole tractors in wellbores. A downhole tractor drive module comprises an output shaft; a harmonic drive gear driven by the output shaft; and at least one wheel, wherein the harmonic drive gear is operable to control torque supplied to the at least one wheel.
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公开(公告)号：US20230137244A1
公开(公告)日：2023-05-04
申请号：US17514217
申请日：2021-10-29
发明人： Simon Whye Kwong Wai
IPC分类号： E21B23/00
摘要： A downhole tractor assembly operable in a wellbore that includes a tractor body and a tractor wheel assembly. The tractor wheel assembly includes a tractor wheel with teeth around a circumference of the wheel and grooves between adjacent teeth. The grooves include a profile in a plane parallel with the axis of the wheel. Also, each tooth includes an outer face with face grooves on each side of the outer face that extend less than across the wheel.
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公开(公告)号：US12071823B2
公开(公告)日：2024-08-27
申请号：US18190197
申请日：2023-03-27
IPC分类号： E21B23/01
CPC分类号： E21B23/01
摘要： Provided is an anchoring mechanism, a method for anchoring a downhole tool, and a well system. The anchoring mechanism, in one aspect, includes a tubular housing, a hub disposed about to the tubular housing, and a wedge hub disposed about the tubular housing, wherein at least one of the hub or wedge hub is slidably disposed about the tubular housing. The anchoring mechanism, according to this aspect, further includes one or more telescoping arms and one or more fixed toggle arms, wherein a first end of the one or more telescoping arms is coupled to one of the hub or the wedge hub, a first end of the one or more fixed toggle arms is coupled to an other of the wedge hub or the hub, and a second end of the one or more telescoping arms and a second end of the one or more fixed toggle arms are coupled to one another at a location between the first end of the one or more telescoping arms and the first end of the fixed toggle arms.
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公开(公告)号：US11802457B1
公开(公告)日：2023-10-31
申请号：US17663041
申请日：2022-05-12
发明人： Simon Whye Kwong Wai
IPC分类号： E21B29/00
CPC分类号： E21B29/002
摘要： A cutting tool can be used to cut through a tubing string in a wellbore. Metal cuttings are formed during the cutting process. The cutting tool can include a cutting insert with a blade that is rotated around a longitudinal axis of the tool. A nose can include a spiral cutout adjacent to the blade. The spiral cutout can force the metal cuttings down past the outside of the nose and down into the tubing string. The nose can also include a guide on the outside underneath the blade. The guide can also provide a pathway for the metal cuttings to fall past the outside of the nose and down into the tubing string. The spiral cutout and the optional guide can be used to prevent metal cuttings from lodging within the cutting tool and preventing the tool from rotating and cutting.
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公开(公告)号：US11215042B2
公开(公告)日：2022-01-04
申请号：US16618695
申请日：2018-12-28
IPC分类号： E21B43/119 , E21B47/092 , E21B43/1185
摘要： A shock sensor, comprising: a housing, wherein the housing is cylindrical, wherein the housing comprises: a first end; a second end; a central bore that traverses a length of the housing; and an internal cavity; a coil, wherein the coil is disposed about the central bore; at least two magnets, wherein the at least two magnets are disposed about the central bore; a spring, wherein the spring is a compression spring, wherein the spring is disposed within the housing, wherein the spring comprises a first end and a second end; and a metallic member, wherein the metallic member is disposed at the second end of the spring.
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