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：US12071820B2

公开(公告)日：2024-08-27

申请号：US18031628

申请日：2022-08-22

Applicant: SICHUAN UNIVERSITY

Inventor： Ru Zhang ,  Heping Xie ,  Zetian Zhang ,  Li Ren ,  Zhilong Zhang ,  Yihang Li ,  Weiqiang Ling ,  Heng Gao

IPC: E21B19/16 ,  E21B49/02 ,  G01M99/00 ,  G01N3/12 ,  G09B25/02

CPC classification number: E21B19/165 ,  G01M99/002 ,  G01N3/12 ,  E21B49/02 ,  G01N2203/0232 ,  G01N2203/0266 ,  G09B25/02

Abstract: A high-temperature and high-pressure simulator for a deep in-situ environment is provided. The simulator includes a high-fidelity sample chamber, where a lower end of the high-fidelity sample chamber is provided with a bottom cylinder. A lower end of the bottom cylinder is provided on a base. A piston rod of the bottom cylinder extends into the high-fidelity sample chamber, and an upper end of the piston rod is provided with a rock sample seat. An upper end of the high-fidelity sample chamber is provided with a rock sample cap. The top of the high-fidelity sample chamber is sealed by an end cap of the high-fidelity sample chamber. An upper end of the end cap of the high-fidelity sample chamber is provided with a multi-section coring drill chamber. The uppermost section of the coring drill chamber is connected to a lift cylinder.

公开(公告)号：US11761283B2

公开(公告)日：2023-09-19

申请号：US17309231

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

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

IPC: E21B25/02 ,  E21B25/08 ,  E21B25/12

CPC classification number: E21B25/08 ,  E21B25/12

Abstract: A core barrel sealing structure includes a core barrel, a drilling machine outer barrel, a chain mail-type flap valve and a trigger mechanism. The flap valve includes a valve seat and a chain mail-type valve flap. The trigger mechanism includes a trigger inner barrel and a trigger block. The trigger block is arranged in a through hole in a sidewall of the trigger inner barrel, and an inner wall of the drilling machine outer barrel is provided with a recessed opening adapted to the trigger block. When the core barrel is located in the valve seat, the valve flap is opened by 90° and is located between the trigger inner barrel and the drilling machine outer barrel. When the core barrel is lifted upwards, the valve flap returns to a top face of the valve seat to make sealing contact with a sealing face of a valve opening.

公开(公告)号：US12085100B2

公开(公告)日：2024-09-10

申请号：US18012665

申请日：2022-08-22

Applicant: SICHUAN UNIVERSITY

Inventor： Ru Zhang ,  Zetian Zhang ,  Zhilong Zhang ,  Li Ren ,  Chendi Lou ,  Kun Xiao ,  Anlin Zhang ,  Qijun Hao ,  Lanbin Zhang

IPC: F15B15/14 ,  F15B15/22

CPC classification number: F15B15/1428 ,  F15B15/1447 ,  F15B15/226 ,  F15B15/1414 ,  F15B15/1466

Abstract: A bottom cylinder for a high-temperature and high-pressure environment simulator of a high-fidelity corer is provided. The bottom cylinder includes a cylinder barrel. The bottom of the cylinder barrel is provided with a cylinder base. The piston is provided inside the cylinder barrel and divides an inner cavity of the cylinder barrel into a rodless cavity and a rod cavity. The piston is provided with a piston rod. The outer wall of the cylinder barrel is provided with an oil inlet hole communicated with the rodless cavity, an oil outlet hole communicated with the rod cavity, and a reserved hole. The lower end surface of the piston is provided with a first buffer ring, and the upper surface of the cylinder base is provided with a second buffer ring mated with the first buffer ring. The bottom cylinder is applied to the simulator for oil and gas resource exploitation.

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.

公开(公告)号：US11773673B2

公开(公告)日：2023-10-03

申请号：US17309239

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

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

IPC: E21B25/02 ,  E21B23/04 ,  E21B4/02 ,  E21B4/18 ,  E21B10/02 ,  E21B10/26 ,  E21B21/10 ,  E21B25/00

CPC classification number: E21B23/0418 ,  E21B4/02 ,  E21B4/18 ,  E21B10/02 ,  E21B10/26 ,  E21B21/10 ,  E21B25/00

Abstract: A coring drill tool driving structure has a driving motor (7), an outer cylinder (23) and a coring drill tool (8). The driving motor comprises an outer rotor (73) and an inner stator (75), the inner wall of the outer rotor and the outer wall of the inner stator are provided with ribs (77) mutually matched, the outer rotor and inner stator are in clearance fit, the clearance between the outer rotor and the inner stator is a driving liquid flow path (74), the outer rotor length is smaller than the inner stator length, the outer rotor is located between front and rear ends of the inner stator, the outer rotor is connected to the outer cylinder, a front end of the outer cylinder is connected to the coring drill tool, and a rear end of the inner stator is connected to a coupling (76).

公开(公告)号：US20210278376A1

公开(公告)日：2021-09-09

申请号：US17326330

申请日：2021-05-21

Applicant: SICHUAN UNIVERSITY ,  YALONG RIVER HYDROPOWER DEVELOPMENT COMPANY, LTD.

Inventor： Ru ZHANG ,  Zetian Zhang ,  Shiyong WU ,  Li REN ,  Jifang ZHOU ,  Mingzhong GAO ,  Chengbo DU ,  Chaopeng ZHANG ,  Ting AI ,  Yang LIU ,  Xiaopeng LI ,  Li QIN

IPC: G01N29/14 ,  G01N3/24 ,  G01N3/08

Abstract: An acoustic emission probe positioning system, a test block for the system, and an application of the system are disclosed. The positioning system comprises a first test block and a second test block that are oppositely arranged and that define a non-closed test region. The first test block includes a first main portion and a first protruding portion that are connected to each other. The second test block includes a second main portion and a second protruding portion that are connected to each other. The first main portion and the second main portion are vertically opposite to each other, and the first protruding portion and the second protruding portion are opposite to each other left and right in a staggered manner. Multiple first probe storage holes are defined in the first main portion, and multiple second probe storage holes are defined in the first protruding portion. Multiple third probe storage holes are defined in the second main portion, and multiple fourth probe storage holes are defined in the second protruding portion. The first probe storage holes, the second probe storage holes, the third probe storage holes, and the fourth probe storage holes are each used for accommodating an acoustic emission probe.

公开(公告)号：US12252942B2

公开(公告)日：2025-03-18

申请号：US18035762

申请日：2022-09-23

Applicant: SICHUAN UNIVERSITY

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

IPC: E21B19/24

Abstract: A rolling and sliding adaptive device for guiding and fixing a drill pipe includes a mounting platform, where the mounting platform is provided with a through hole for the drill pipe to pass through. Multiple rolling and sliding support mechanisms are arranged around the through hole. The rolling and sliding support mechanisms each include a support seat. The support seat is provided with a contact element telescopic and swingable on the support seat. A telescopic drive mechanism is provided between the contact element and the support seat. The contact elements on the multiple rolling and sliding support mechanisms form a funnel-shaped structure with a large upper part and a small lower part around the through hole. The rolling and sliding adaptive device is used on a deep in-situ high-fidelity coring calibration platform for accurate positioning of an assembly process of a multi-section drill pipe bin.