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公开(公告)号：US12116893B2
公开(公告)日：2024-10-15
申请号：US17816893
申请日：2022-08-02
摘要： A body of a shear pin can be positioned in a pad stopper of a steering pad of a rotary steerable system. The rotary steerable system can be used to steer a drill in a wellbore. The steering pad can be positioned on the rotary steerable system such that a head of the shear pin is coupled with a lateral pad of the rotary steerable system. The head of the shear pin can deactivate the steering pad by preventing the steering pad from actuating. A fluid pulse can be output in the wellbore to break the shear pin for enabling the steering pad to actuate to cause the rotary steerable system to steer the drill in the wellbore.
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公开(公告)号：US20240328258A1
公开(公告)日：2024-10-03
申请号：US18737360
申请日：2024-06-07
摘要： A rotary steerable drilling system can be positioned in a subterranean formation to steer a drill to form a wellbore in the subterranean formation. An orientation of a steering valve, which is positioned in the rotary steerable drilling system, can be adjusted to cover each channel of one or more channels of a valve seat adjacent the steering valve to deactivate each steering pad of one or more steering pads of the rotary steerable drilling system. The orientation of the steering valve can be adjusted to activate at least one steering pad of the one or more steering pads of the rotary steerable drilling system.
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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：US10317351B2
公开(公告)日：2019-06-11
申请号：US15541013
申请日：2016-09-20
发明人： Yuan Chong , Songhua Chen , Lilong Li , Lizheng Zhang
摘要： Core samples may been collected in a subterranean formation, preserved downhole in a pressurized nuclear magnetic resonance (NMR) core holder (1) comprising components for NMR imaging and (2) capable of maintaining the core samples at downhole fluid saturation state. For example, a pressurized NMR core holder may comprise a housing capable of containing downhole fluid pressures; a coil holder lining an inside of the housing and defining a core chamber; and one or more NMR coils maintained in a longitudinal position along the housing by the coil holder. Further, a system for performing the NMR imaging may comprise: a holder that maintains a pressurized NMR core holder in a desired position; and one or more magnets that are longitudinally movable along the pressurized NMR core holder.
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公开(公告)号：US10012077B2
公开(公告)日：2018-07-03
申请号：US14895032
申请日：2014-10-30
发明人： Hua Xia , Lizheng Zhang , Robert Atkinson , Nestor Rodriguez , Christopher Michael Jones , Darren Gascooke
CPC分类号： E21B49/081 , E21B17/18 , E21B47/011 , E21B47/06 , E21B47/065 , E21B2049/085 , G01V1/48 , G01V1/52
摘要： A downhole sensor package for detecting one or more thermophysical properties of a downhole fluid, comprising a sensor housing having a fluid input port and a fluid output port; an inner flow tube located within and axially defined with the sensor package housing; an outer flow annulus defined between the inner flow tube and the sensor housing, wherein the inner flow tube is in fluid communication with the outer flow annulus; and a vibration source and a vibration detector engaging the inner flow tube; and methods for using the same are disclosed.
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6.发明授权公开(公告)号：US09557300B2
公开(公告)日：2017-01-31
申请号：US15026432
申请日：2014-11-12
发明人： Hua Xia , Yinghui Lu , Lizheng Zhang , John L. Maida
CPC分类号： G01N29/07 , E21B47/00 , G01M5/0033 , G01M5/0091 , G01N3/26 , G01N29/00 , G01N29/2418 , G01N2291/0231 , G01N2291/02491 , G01N2291/0258 , G01N2291/02827
摘要： Systems and methods for determining whether mechanical fatigue exists in a downhole cable using thermally-induced acoustic waves are disclosed herein. A cable fatigue monitoring system includes a thermal source, one or more light sources, one or more photodetector arrays, and a computing system comprising a processor, a memory, and a cable distortion module. The cable distortion module is operable to generate acoustic waves in a cable using the thermal source, direct light from the one or more light sources toward the cable, detect light from the one or more light sources transmitted past the cable at the one or more photodetector arrays, and determine, based on the detected light transmitted past the cable, whether a change in velocity of the acoustic waves has occurred in the cable.
摘要翻译： 本文公开了使用热感应声波来确定在井下电缆中是否存在机械疲劳的系统和方法。 电缆疲劳监测系统包括热源，一个或多个光源，一个或多个光电检测器阵列，以及包括处理器，存储器和电缆失真模块的计算系统。 电缆失真模块可操作以使用热源在电缆中产生声波，将来自一个或多个光源的光直接引向电缆，检测在一个或多个光电检测器处经过电缆传输的一个或多个光源的光 阵列，并且基于通过电缆传输的检测到的光确定在电缆中是否已经发生声波的速度变化。
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公开(公告)号：US11988050B2
公开(公告)日：2024-05-21
申请号：US17815631
申请日：2022-07-28
发明人： Lizheng Zhang , Wei Zhang
CPC分类号： E21B17/1042 , E21B17/1028 , E21B17/1078 , E21B17/10 , E21B23/00
摘要： A centralizer for a downhole probe disposed within a pipe, the centralizer having an elongated, primary tubular member with two or more elongated centralizer strip assemblies extending along the primary tubular member. Each strip assembly has inner and outer hollow portions on the wall of the primary tubular member and spaced apart from one another about the circumference of the wall. The outer portion of each strip assembly comprises a flexible outer spring, and the inner portion of the strip assembly comprises a flexible inner spring. The inner portions of the strip assemblies engage the outer diameter of a probe and the outer portions of the strip assemblies engage the inner diameter of a pipe.
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公开(公告)号：US20240044209A1
公开(公告)日：2024-02-08
申请号：US17816912
申请日：2022-08-02
摘要： A rotary steerable drilling system can be positioned in a subterranean formation to steer a drill to form a wellbore in the subterranean formation. An orientation of a steering valve, which is positioned in the rotary steerable drilling system, can be adjusted to cover each channel of one or more channels of a valve seat adjacent the steering valve to deactivate each steering pad of one or more steering pads of the rotary steerable drilling system. The orientation of the steering valve can be adjusted to activate at least one steering pad of the one or more steering pads of the rotary steerable drilling system.
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公开(公告)号：US11873688B2
公开(公告)日：2024-01-16
申请号：US17815643
申请日：2022-07-28
发明人： Lizheng Zhang , Wei Zhang
IPC分类号： E21B17/10
CPC分类号： E21B17/1078 , E21B17/1042
摘要： A centralizer for a downhole probe disposed within a pipe, the centralizer having an elongated, primary tubular member that is polygonal in cross-section such that the wall of the tubular primary tubular member is formed with at least three sides. Each side has two adjacent inwardly extending ridges positioned between two outwardly extending ridges. The inwardly extending ridges each extend inward to an inner diameter to engage the outer diameter of a sonde and the outwardly extending ridges each extend outward to an outer diameter to engage the inner diameter of a pipe.
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公开(公告)号：US11753871B2
公开(公告)日：2023-09-12
申请号：US17542030
申请日：2021-12-03
发明人： Lizheng Zhang , Wei Zhang
IPC分类号： E21B7/06
摘要： A system can be used for drilling a wellbore. The system can include a steering collar, an actuation cylinder, and a radial seal. The steering collar can be positioned on a drilling tool for forming a wellbore. The actuation cylinder can be positioned on the drilling tool for abutting a steering pad for actuating the steering pad. The radial seal can be positioned on the drilling tool between the steering collar and the actuation cylinder.
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