公开(公告)号：US12221849B2

公开(公告)日：2025-02-11

申请号：US17997275

申请日：2021-01-26

Applicant: SICHUAN UNIVERSITY

Inventor： Mingzhong Gao ,  Ling Chen ,  Jianan Li ,  Cong Li ,  Zhiqiang He ,  Le Zhao ,  Mingqing Yang ,  Nianhan Wu ,  Bo Yu

IPC: E21B34/14 ,  E21B33/06 ,  E21B34/12

Abstract: An internal blowout-prevention gas-retaining connector has a body mounted at the bottom of a drill pipe. The body includes a valve pipe section and a connecting pipe section arranged from top to bottom. The bottom of the valve pipe section is inserted into the top of the connecting pipe section. The blowout-prevention valve seat is provided at a bottom end of the valve pipe section while a blowout-prevention valve bonnet is provided on a bottom surface of the valve pipe section. The edge of the blowout-prevention valve bonnet is rotatably connected to a bottom surface edge of the valve pipe section. A torsion spring is provided on a bottom surface of the blowout-prevention valve bonnet. One end of the torsion spring is connected to the bottom surface of the blowout-prevention valve bonnet while the other end is connected to the inner wall of the connecting pipe section.

公开(公告)号：US11781382B2

公开(公告)日：2023-10-10

申请号：US17309236

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Mingzhong Gao ,  Heping Xie ,  Ling Chen ,  Zhilong Zhang ,  Jun Guo ,  Zetian Zhang ,  Yiqiang Lu ,  Cong Li ,  Zhiqiang He

IPC: E21B25/02 ,  E21B25/10 ,  E21B17/10 ,  E21B4/02 ,  E21B23/02 ,  E21B25/06

CPC classification number: E21B17/1078 ,  E21B4/02 ,  E21B23/02 ,  E21B25/02 ,  E21B25/06 ,  E21B25/10

Abstract: A drilling mechanism of a coring drilling rig has a central rod, a fluid channel starting module, an outer barrel, an outer barrel unlocking module, a flow diverging module and a drill bit. The central rod penetrates the fluid channel starting module. The outer barrel unlocking module and an inner cavity of the flow diverging module from back to front. The fluid channel starting module is behind the outer barrel and is connected to the outer barrel unlocking module. The flow diverging module is in front of the outer barrel unlocking module, and a hydraulic motor is connected in front of the flow diverging module. The outer barrel has a driving section that is a rotor of the hydraulic motor. The outer wall of the outer barrel is fixedly connected to a centralizer, and the front end of the outer barrel is connected to the drill bit.

公开(公告)号：US11905775B2

公开(公告)日：2024-02-20

申请号：US17309234

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Mingzhong Gao ,  Heping Xie ,  Ling Chen ,  Jun Guo ,  Zhilong Zhang ,  Zetian Zhang ,  Yiqiang Lu ,  Cong Li ,  Zhiqiang He

IPC: E21B25/02 ,  E21B23/04 ,  E21B4/02 ,  E21B4/18 ,  E21B21/10 ,  E21B25/00

CPC classification number: E21B23/0418 ,  E21B4/02 ,  E21B4/18 ,  E21B21/10 ,  E21B25/00 ,  E21B25/02

Abstract: A driving system for a core drilling rig has a driving motor. The driving motor has an outer rotor and an inner stator, and mutually-matched convex ribs are provided on the inner wall of the outer rotor and the outer wall of the inner stator. The outer rotor and the inner stator are in clearance fit. A clearance between the outer rotor and the inner stator is a driving liquid channel. The length of the outer rotor is less than that of the inner stator. The outer rotor is provided between the front and rear ends of the inner stator. The outer rotor is connected to an outer cylinder. The rear end of the inner stator is connected to a coupling.

公开(公告)号：US11788371B2

公开(公告)日：2023-10-17

申请号：US17309232

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Heping Xie ,  Mingzhong Gao ,  Ling Chen ,  Zhiyi Liao ,  Zhilong Zhang ,  Zetian Zhang ,  Yiqiang Lu ,  Cong Li ,  Zhiqiang He

IPC: E21B25/10 ,  E21B10/02 ,  E21B10/26 ,  E21B10/44 ,  E21B10/60 ,  E21B34/06

CPC classification number: E21B25/10 ,  E21B10/02 ,  E21B10/26 ,  E21B10/44 ,  E21B10/605 ,  E21B34/06

Abstract: A coring device has core drilling tool, a core catcher, a rock core barrel, a drilling machine outer cylinder, a flap valve and an inner rod for pulling the rock core barrel. The core catcher is provided inside the lower end of the rock core barrel. The core drilling tool includes an outer core tube and a hollow drill bit. The upper end of the outer core tube is connected to the lower end of the drilling machine outer cylinder. The lower end of the outer core tube is connected to the drill bit. The lower end of the inner rod protrudes into the rock core barrel and is movable axially by a certain distance relative to the rock core barrel. The flap valve includes a valve seat and a sealing flap. The valve seat is coaxially mounted on the inner wall of the drilling machine outer cylinder.

公开(公告)号：US20200181999A1

公开(公告)日：2020-06-11

申请号：US16708412

申请日：2019-12-09

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Heping Xie ,  Ling Chen ,  Mingzhong Gao ,  Cunbao Li ,  Guangdi Deng ,  Xia Hua

IPC: E21B25/10 ,  E21B44/00 ,  E21B47/06

Abstract: The present disclosure relates to the field of scientific drilling technologies, and provides a deep rock in-situ active thermal-insulation coring device and thermal-insulation coring method thereof. The coring device comprises an in-situ coring system and an in-situ truth-preserving moving system, the in-situ coring system comprises a driving module, a coring module and a thermal insulation module, and the in-situ truth-preserving moving system comprises a truth-preserving chamber storage module and a mechanical arm; the thermal insulation module comprises a coring truth-preserving chamber and a temperature regulation control system, the truth-preserving chamber storage module comprises a storage truth-preserving chamber and a temperature balance control system, the mechanical arm is mounted in the storage truth-preserving chamber, and the coring truth-preserving chamber and the storage truth-preserving chamber are mutually butted.

公开(公告)号：US12130646B2

公开(公告)日：2024-10-29

申请号：US18034401

申请日：2022-12-22

Applicant: SICHUAN UNIVERSITY

Inventor： Zetian Zhang ,  Heping Xie ,  Ru Zhang ,  Yihang Li ,  Jianan Li ,  Ling Chen ,  Mingzhong Gao ,  Wei Huang ,  Li Ren ,  Chendi Lou ,  Kun Xiao ,  Weiqiang Ling ,  Zhilong Zhang

IPC: G05D27/02 ,  G05D16/20

CPC classification number: G05D27/02 ,  G05D16/2066

Abstract: A real-time temperature-pressure detection and rapid processing system for a calibration platform, comprises an inner return pipe, and a water supply pipe is provided therein with an inner water supply pipe. An outer wall of the inner water supply pipe is connected with an inner wall of the water supply pipe through multiple springs. An outer wall of the inner return pipe is connected with an inner wall of a return pipe through multiple springs. The return pipe and the water supply pipe are made of a thermosetting polymer material. The multiple springs, the inner water supply pipe, and the inner return pipe are covered with a heat conducting material. The system further includes a temperature-pressure detection assembly. The assembly includes multiple infrared sensors arranged at two sides of the return pipe and the water supply pipe, a booster pump, a heater, and infrared sensors connected with a control unit.

公开(公告)号：US12128512B2

公开(公告)日：2024-10-29

申请号：US18031357

申请日：2022-09-23

Applicant: SICHUAN UNIVERSITY

Inventor： Heping Xie ,  Ru Zhang ,  Zetian Zhang ,  Ling Chen ,  Mingzhong Gao ,  Zhilong Zhang ,  Yang Yang ,  Jianan Li ,  Wei Huang ,  Li Ren ,  Yihang Li ,  Kun Xiao ,  Weiqiang Ling ,  Chendi Lou ,  Heng Gao

IPC: B23P19/04 ,  B23P19/10 ,  E21B41/00 ,  G01M99/00 ,  E21B25/00

CPC classification number: B23P19/04 ,  B23P19/10 ,  E21B41/00 ,  G01M99/008 ,  E21B25/00 ,  Y10T29/49895

Abstract: An assembly method for a deep in-situ high-fidelity coring calibration platform includes the following steps: S1: fixing a core bin assembly subsystem on a preset ground foundation and fixing a simulator of a core bin on a mounting base plate of the core bin assembly subsystem; S2: driving a cylinder and driving the mounting base plate to move to a preset position; S3: driving a servo motor and controlling two clips to move close to each other; S4: fixing a drill pipe bin assembly subsystem on the ground foundation; S5: assembling multiple sections of a drill pipe bin in turn; aligning and connecting a bottom of the drill pipe bin to the simulator, and aligning and communicating the top of the drill pipe bin with the lower part of an adaptive drill pipe guide structure; and S6: driving the adaptive drill pipe guide structure to perform accurate positioning.

公开(公告)号：US11788370B2

公开(公告)日：2023-10-17

申请号：US17309238

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Mingzhong Gao ,  Ling Chen ,  Heping Xie ,  Zhilong Zhang ,  Jun Guo ,  Zetian Zhang ,  Ru Zhang ,  Yiqiang Lu ,  Cong Li ,  Zhiqiang He

IPC: E21B25/02 ,  E21B4/02

CPC classification number: E21B25/02 ,  E21B4/02

Abstract: A drilling control mechanism of a core drilling rig has a tooth drill and a core drilling rig. The core drilling rig is inside the tooth drill and engages with the drill in a sliding manner. A locking recess is formed at an inner wall of the tooth drill. A locking latch recess is formed at an outer wall of the core drilling rig and has a locking latch therein. The locking latch has a spring. When the locking recess is directly opposite the locking latch recess, the spring extends and the locking latch partially enters the locking recess. The core drilling rig has a central rod, a fluid channel activation module, an outer barrel, and outer barrel unlocking module and a flow diverging module. The central rod passes through the inner cavities of the fluid channel activation module, the outer barrel unlocking module and the flow diverging module.

公开(公告)号：US11773670B2

公开(公告)日：2023-10-03

申请号：US17309233

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Mingzhong Gao ,  Heping Xie ,  Ling Chen ,  Jun Guo ,  Zhilong Zhang ,  Zetian Zhang ,  Ru Zhang ,  Yiqiang Lu ,  Cong Li ,  Zhiqiang He

IPC: E21B23/04 ,  E21B21/10 ,  E21B25/10 ,  E21B34/06

CPC classification number: E21B23/04115 ,  E21B21/10 ,  E21B25/10 ,  E21B34/063

Abstract: A control mechanism of a core drilling rig includes a central rod (14) and an outer barrel (23). The central rod (14) passes through, from the rear to the front, the inner cavities of a fluid channel activation module, an outer barrel unlocking module, a flow diverging module, and a coring barrel connecting module. The coring barrel connecting module comprises a core tube connecting pipe (62), a core ring bearing (63), a bearing inner ring (64), a ball A (6211) and a ball B (6411). The core tube connecting pipe (62) is connected at the front side thereof to the coring barrel (65). The bearing inner ring (64) is inside the core tube connecting pipe (62). The core ring bearing (63) is connected to an inner wall of the outer barrel (23).

公开(公告)号：US11859450B2

公开(公告)日：2024-01-02

申请号：US17309235

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Mingzhong Gao ,  Heping Xie ,  Ling Chen ,  Jun Guo ,  Zhilong Zhang ,  Zetian Zhang ,  Ru Zhang ,  Yiqiang Lu ,  Cong Li ,  Zhiqiang He

IPC: E21B10/60 ,  E21B25/08 ,  E21B25/10

CPC classification number: E21B10/605 ,  E21B25/08 ,  E21B25/10

Abstract: A drilling fluid channel structure of a core drilling rig includes a fluid channel activation module, a pressure relief module, a flow diverging and blocking module, a driving fluid channel and a cooling fluid channel. The fluid channel activation module, the pressure relief module and the flow diverging and blocking module are connected sequentially from the rear to the front. The driving fluid channel and the cooling fluid channel are connected at the rear side thereof to the flow diverging and blocking module. The driving fluid channel includes a driving section located between a stator and a rotor of a driving motor. The driving fluid channel is provided with a driving fluid outlet at the front side of the driving section. The cooling fluid channel passes through a layer disposed between an integrity-preserving compartment and an outer barrel.