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公开(公告)号：US20180087345A1
公开(公告)日：2018-03-29
申请号：US15720559
申请日：2017-09-29
Applicant: CNPC USA CORPORATION
Inventor： Jianhui Xu
IPC: E21B33/12 , E21B33/134 , E21B33/129 , E21B33/126 , E21B23/06
CPC classification number: E21B33/1208 , B32B15/015 , C22C21/00 , E21B23/01 , E21B23/06 , E21B33/1265 , E21B33/1292 , E21B33/134
Abstract: A dissolvable composite slip can include at least in part a dissolvable material. A dissolvable composite slip can include at least in part a non-dissolvable metallic material. The dissolvable material should be strong enough to support the non-dissolvable metallic material which serves as teeth to set into the casing during the function of the downhole tool. The dissolvable material can include but is not limited to a polymeric material or a metallic material. At least a part of the slip is able to be set as well as be dissolved.
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公开(公告)号：US20180058174A1
公开(公告)日：2018-03-01
申请号：US15254506
申请日：2016-09-01
Applicant: CNPC USA CORPORATION
Inventor： Jianpeng Yue , Peng Cheng , Marvin Allen Gregory , Xu Wang
IPC: E21B33/134 , E21B33/128 , E21B33/129 , E21B43/26 , E21B43/14
CPC classification number: E21B33/134 , E21B33/1204 , E21B33/128
Abstract: A short millable plug includes a mandrel, an upper backup ring and a lower backup ring, a cone, a slip that can be expand and engage a casing, a plurality of sealing elements that creates a seal between the mandrel and the casing, a centralizer that can radially expand to force against the casing wall, a mill-out anti-rotation feature at the middle of the mandrel which is exposed once the plug is set. The centralizer can keep the plug in the center of the casing and each individual slip segments of the slip has the same distance to the casing wall during setting and operation. The mill-out anti-rotation feature can reduce relative rotation between the plug and the casing while reduces the length of the plug.
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公开(公告)号：US20180037793A1
公开(公告)日：2018-02-08
申请号：US15228823
申请日：2016-08-04
Applicant: CNPC USA CORPORATION
Inventor： Meng Lu , Ping Huang , Wei Wan
Abstract: A combination of three polymers including a crosslinked acrylamide-TBAS copolymers in inverse emulsion form, N-vinyl pyrrolidone-acrylamide-TBAS terpolymer, and crosslinked N-vinyl pyrrolidone-acrylamide-TBAS acts as high temperature, high pressure fluid loss control additives for water-based drilling fluids systems. The combination is particularly useful for high salt, high density drilling fluids, and high temperature applications.
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公开(公告)号：US09121224B2
公开(公告)日：2015-09-01
申请号：US13692485
申请日：2012-12-03
Applicant: CNPC USA CORPORATION
Inventor： Marvin A Gregory
IPC: E21B7/24
CPC classification number: E21B7/24 , Y10T74/18304
Abstract: A vibrational tool with tool axis rotational mass and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore. A reciprocating member and rotatable mass are mounted within a vibrational tool housing. A plurality of curved passageways are positioned to induce rotation in response to fluid flow through the tool housing. As the rotatable mass rotates, a mechanical interconnection causes the reciprocating member to reciprocate, and results in vibrational forces for moving a bottom hole assembly.
Abstract translation: 公开了一种具有刀具轴旋转质量和方法的振动工具，其可用于帮助将钻柱降低到井筒中。 往复运动的构件和可旋转的质量块安装在振动工具壳体内。 多个弯曲通道被定位成响应于通过工具壳体的流体流动而引起旋转。 当可旋转物质旋转时，机械互连使得往复运动件往复运动，并产生用于移动底部孔组件的振动力。
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公开(公告)号：US09033067B2
公开(公告)日：2015-05-19
申请号：US13692314
申请日：2012-12-03
Applicant: CNPC USA Corporation
Inventor： Marvin A Gregory
CPC classification number: E21B7/24 , E21B4/06 , E21B4/14 , Y10T74/18304
Abstract: A vibrational tool and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore. In one embodiment, a reciprocating member and a symmetrical rotating member are mounted within a vibrational tool housing. The reciprocating member is urged in one embodiment by a spring assembly toward the rotating member whereby engagement surfaces on the reciprocating member and rotating member encounter each other. As the rotating member rotates, variable surfaces on the engagement surface cause the reciprocating member to reciprocate as the variable surfaces follow or cam with respect to each other during rotation. The resistance to rotation by engagement surfaces and spring assembly, and mass of the rotating member, result in vibrational forces, when drilling fluid flows through the vibration tool housing.
Abstract translation: 公开了一种振动工具和方法，其可用于帮助将钻柱降低到井眼中。 在一个实施例中，往复构件和对称的旋转构件安装在振动工具壳体内。 在一个实施例中，往复运动件通过弹簧组件向着旋转件施力，从而往复运动件和转动件上的接合表面相互碰撞。 当旋转构件旋转时，接合表面上的可变表面使得往复运动构件在旋转期间随着可变表面相对于彼此相对或凸轮而往复运动。 当钻井液流过振动工具壳体时，通过接合表面和弹簧组件的旋转阻力以及旋转构件的质量导致振动力。
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Patent Agency Ranking
公开(公告)号：US12215564B2
公开(公告)日：2025-02-04
申请号：US18049374
申请日：2022-10-25
Inventor： Kwami Roberts , Jeff Maynard , Jianpeng Yue , Peng Cheng , Damon Nettles , Perry Batson
IPC: E21B33/128 , E21B33/1295
Abstract: The packer system includes a packer mandrel, an upper support or gage ring, a seal member, an upper slip device, an upper cone, a lower cone, a lower slip device, a setting sleeve, and a setting piston. The seal member has a run-in position and a set position. The set position seals against a borehole at a location in a borehole. The setting sleeve has a bypass position to transfer load of the setting piston away from the lower slip device and to the lower cone, the seal member, and the upper cone to set the seal member and upper slip device before the lower slip device. The setting sleeve has a released position to separate from the setting piston so that the load of the setting piston can finally be applied on the lower slip device for expansion of the lower slip device at the proper time and location.
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公开(公告)号：US20240425736A1
公开(公告)日：2024-12-26
申请号：US18826879
申请日：2024-09-06
Inventor： Kai ZHANG , Chris Cheng , Xiao Feng , Qi Peng , Xiongwen Yang
Abstract: A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond table and a substrate. The diamond table may be attached to the substrate. The diamond table may include bonded diamond grains defining interstitial channels. The interstitial channels may be filled with non-catalytic binder materials in some regions. The interstitial channels in some other regions may be filled with catalytic materials from the substrate.
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公开(公告)号：US12098327B2
公开(公告)日：2024-09-24
申请号：US18485934
申请日：2023-10-12
Inventor： Fuchen Liu , Jianshen Li , Lijun Lin , Jiangshui Huang , Genyao Lin , Lulu Song , Stephanie Yu
CPC classification number: C09K8/68 , E21B43/26 , C09K2208/28
Abstract: A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
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公开(公告)号：US12049588B2
公开(公告)日：2024-07-30
申请号：US18129662
申请日：2023-03-31
Inventor： Meng Lu , Danhua Zhang , Fuchen Liu , Nancy Zhou , Jianshen Li , Weibin Zha
Abstract: This disclosure describes the composition and methods of use for a novel delayed polymer gelation system for high temperature and high salinity applications. This polymer gelation system includes a polymer of acrylamide, AMPS and 500-5000 ppm polyethylene glycol diacrylate in inverse emulsion form, and a polyethyleneimine (PEI) with a MW of 2,000-30,000 daltons as the crosslinking agent.
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公开(公告)号：US20240228862A1
公开(公告)日：2024-07-11
申请号：US18392303
申请日：2023-12-21
Inventor： Jiangshui Huang , Nancy Zhou , Lijun Lin , Fuchen Liu , Guodong Wu , Bo Huang
CPC classification number: C09K8/68 , C09K8/584 , C09K8/602 , C09K8/665 , E21B43/26 , E21B37/06 , E21B41/02
Abstract: A novel surfactant composition that comprises of two surfactant components, a solvent, and water. The surfactant composition is added to a fracturing fluid, which is then pumped downhole into a subterranean formation where the novel characteristics of the fracturing fluid lend to improved oil production over the fracturing fluid without the surfactant composition.
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