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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：US20240279992A1
公开(公告)日：2024-08-22
申请号：US18581978
申请日：2024-02-20
CPC分类号： E21B23/001 , B60L53/12 , B60L53/30 , B60L2210/30 , E21B2200/20 , H02J50/05 , H02J50/10
摘要： Provided is a wellbore tractor, a well system and a method. The wellbore tractor, in one aspect, includes a tractor drive module, the tractor drive module configured to propel the wellbore tractor within a wellbore extending through one or more subterranean formations, and well as a tractor electronics module coupled to the tractor drive module, the tractor electronics module including one or more batteries. The wellbore tractor, according to this aspect, further includes a tractor power transfer module coupled to the tractor electronics module, the tractor power transfer module configured to receive power from a wellbore tractor charging station located within the wellbore and transfer it to the one or more batteries.
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公开(公告)号：US20240278667A1
公开(公告)日：2024-08-22
申请号：US18581885
申请日：2024-02-20
CPC分类号： B60L53/50 , E21B41/0085 , E21B43/12 , B60L2200/40 , B60L2210/30 , B60L2210/40
摘要： Provided is a wellbore tractor charging station, a well system, and a method. The wellbore tractor charging station, in one aspect, includes a power generation module, the power generation module configured to self-generate power for transfer to a wellbore tractor located within a wellbore. The wellbore tractor charging station, in another aspect, includes a power transfer module coupled to the power generation module, the power transfer module configured to transfer the power generated by the power generation module to the wellbore tractor while the wellbore tractor is located within a wellbore.
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公开(公告)号：US12055038B2
公开(公告)日：2024-08-06
申请号：US17572684
申请日：2022-01-11
发明人： Zhonghuan Chen , Bin Dai , Christopher Michael Jones , Wei Zhang
IPC分类号： E21B49/08 , G01N9/32 , G01N21/3577 , G01N21/17
CPC分类号： E21B49/081 , G01N9/32 , G01N21/3577 , G01N2021/178
摘要： Fluid holdups within a downhole sampling tool are identified by comparing high- and low-resolution measurements of fluid samples.
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公开(公告)号：US11933171B2
公开(公告)日：2024-03-19
申请号：US17568380
申请日：2022-01-04
发明人： Zhonghuan Chen , Bin Dai , Christopher Michael Jones , Wei Zhang
IPC分类号： G01N21/85 , E21B47/135 , E21B49/08 , G01N21/954
CPC分类号： E21B49/0875 , E21B47/135 , G01N21/85 , G01N21/954 , G01N2021/8571
摘要： Light from a light source that has interacted with a sample of downhole fluid provided in a downhole optical tool is sequentially passed through a plurality of groups of light filters, each of the groups of light filters including of one or more light filters, to generate a data set for each of the groups of light filters, also referred to as a simultaneous channel group. The data generated for each of the simultaneous channel groups is then analyzed to determine if the data from that simultaneous channel groups is effective in providing information useful for the analysis of the sample of downhole fluid.
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公开(公告)号：US20230212946A1
公开(公告)日：2023-07-06
申请号：US17568380
申请日：2022-01-04
发明人： Zhonghuan Chen , Bin Dai , Christopher Michael Jones , Wei Zhang
CPC分类号： E21B49/0875 , G01N21/85 , G01N2021/8571
摘要： Light from a light source that has interacted with a sample of downhole fluid provided in a downhole optical tool is sequentially passed through a plurality of groups of light filters, each of the groups of light filters including of one or more light filters, to generate a data set for each of the groups of light filters, also referred to as a simultaneous channel group. The data generated for each of the simultaneous channel groups is then analyzed to determine if the data from that simultaneous channel groups is effective in providing information useful for the analysis of the sample of downhole fluid.
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公开(公告)号：US20220277045A1
公开(公告)日：2022-09-01
申请号：US17461528
申请日：2021-08-30
IPC分类号： G06F16/909 , G06F16/906 , G06F16/901
摘要： A method and system for identifying a fault in a downhole tool. The method may comprise storing a plurality of diagnostic trouble codes (DTCs) from one or more previous downhole operations in a database, mapping the plurality of DTCs in the database, performing a downhole operation wherein a DTC is generated, and performing a determinative algorithm that uses pattern recognition to identify a fault caused by a DTC signature based on the one or more of the plurality of DTCs.
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公开(公告)号：US20210087885A1
公开(公告)日：2021-03-25
申请号：US17014806
申请日：2020-09-08
IPC分类号： E21B7/06
摘要： Steering mechanisms for use in RSS systems may be devoid of an elastomeric piston seal. Pistons of the steering mechanisms have a convex cross-section that permit the piston to pivot along with a steering pad while moving laterally or radially along a piston axis defined by a piston bore. Hydraulic pressure may be maintained as the pad is extended since a limited gap size between the piston and the bore may be maintained throughout the motion of the pistons. The pistons may be retained to the steering pad in a T-slot and may be elongated in a direction orthogonal to the axis of the piston bore. A groove may be provided around the piston for a receiving a back-up seal therein. The back-up seal may include wear resistant balls embedded in a matrix, and balls may be preloaded to serve as flow restrictors even when worn.
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公开(公告)号：US20200263501A1
公开(公告)日：2020-08-20
申请号：US16349469
申请日：2018-06-19
发明人： Brian Lee Doud , Neelesh Deolalikar , Wei Zhang
摘要： Rotary steerable drilling systems are subjected to harsh environments including high temperature and pressure. A metallic seal ring prevents or limits erosive wear by limiting the velocity of the fluid that traversers from the high pressure side of the metallic seal ring to the low pressure side of the metallic seal ring to a value that can be sustained by the material of the metallic seal ring. A metallic seal ring is capable of withstand the wear and tear of drilling mud or other fluids used for downhole drilling operations. A metallic seal ring includes a mating configuration that creates a seal as the metallic seal ring is contracted when or a tension is applied when disposed or positioned in the piston bore. The metallic seal ring maintains an adequate seal to protect the components of a pad assembly over the life or specified duration of a downhole drilling operation.
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公开(公告)号：US10529468B2
公开(公告)日：2020-01-07
申请号：US15767970
申请日：2015-11-12
发明人： George D. Goodman , Wei Zhang
摘要： A cable including a fiber optic core configured to transmit data, a core conductor configured to transmit power and located concentrically around the fiber optic core, and a concentric conductor configured to transmit power and located concentrically around the core conductor and the fiber optic core. The cable also includes a dielectric layer located between the core conductor and the concentric conductor and configured to electrically isolate the core conductor from the concentric conductor.
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