公开(公告)号：US10823652B2

公开(公告)日：2020-11-03

申请号：US16396797

申请日：2019-04-29

Applicant: Sichuan University

Inventor： Jianfeng Liu ,  Xiaozhang Lei ,  Wenxi Fu ,  Feng Dai ,  Yufeng Wei ,  Chunping Wang ,  Huining Xu ,  Jianliang Pei ,  Fei Wu ,  Gang Chen ,  Jinbing Wei

IPC: G01N3/18 ,  G01N33/24 ,  G01N3/02 ,  G01N3/06 ,  G01L5/00 ,  G01N3/10

Abstract: A triaxial high temperature and high pressure rock mechanics load test platform includes a base, a lifting seat, and an intermediate connecting seat arranged between the base and the lifting seat. A hydraulic assembly is arranged between the base and the intermediate connecting seat; the intermediate connecting seat is connected with the lifting seat by means of a group of connecting rods; the lifting seat is enclosed by a side wall and a base plate to form a receiving groove with an upward opening; and a limiting device is arranged on the side wall of the lifting seat for preventing an MTS triaxial force sensor from disengaging from a support disk.

公开(公告)号：US10048182B2

公开(公告)日：2018-08-14

申请号：US14880301

申请日：2015-10-12

Applicant: Sichuan University

Inventor： Jianfeng Liu ,  Heping Xie ,  Jianhui Deng ,  Lu Wang ,  Jianliang Pei ,  Yong Xiang ,  Linrui Li ,  Yu Bian ,  Huining Xu ,  Zhiwei Zhou

IPC: G01N3/20 ,  G01N3/24 ,  G01N33/24 ,  G01N3/08

Abstract: A rock specimen, including a rock body. The rock body includes: an upper part, an upper end face, a first circular groove, a first cylinder, a first circular body, a lower part, a lower end face, a second circular groove, a second cylinder, and a second circular body. The first circular groove is disposed on the upper end face of the rock body and has a circle center coinciding with a center of the upper end face. A method for testing pure shear of the rock specimen, includes: 1) disposing the rock specimen on a test bench of a rock mechanics testing system, allowing the end face of the second circular body to contact the test bench; and 2) operating the rock mechanics testing system, loading a pressure on the rock specimen via the end face of the first cylinder and the end face of the second circular body.

公开(公告)号：US10018594B2

公开(公告)日：2018-07-10

申请号：US15016315

申请日：2016-02-05

Applicant: Sichuan University

Inventor： Jianfeng Liu ,  Heping Xie ,  Yang Ju ,  Lu Wang ,  Huining Xu ,  Jianping Zuo ,  Yangmengdi Xu ,  Hang Zou ,  Zhiwei Zhou ,  Yue Zhuo

IPC: G01N29/14 ,  G01N29/22

CPC classification number: G01N29/14 ,  G01N29/223 ,  G01N2291/0232

Abstract: A fixing device for acoustic emission test sensors for rock damage testing, the device including: a fixing frame, installation bases operating to accommodate the acoustic emission test sensors, respectively, fixing assemblies operating to fix the acoustic emission test sensors in the installation bases, and installation mechanisms operating to install the installation bases on the fixing frame. The fixing frame is an integrated loop-shaped frame. Each of the installation bases is a cylinder structure which includes: a cavity corresponding to an outer edge of each of the acoustic emission test sensors, and a wall including a gap for leading out wires of each sensor. The installation mechanisms are adapted to automatically and axially adjust positions of the installation bases. The installation mechanisms are four in number. The four installation mechanisms are disposed on a same section plane of the fixing frame and every two installation mechanisms are oppositely disposed.

公开(公告)号：US09574980B2

公开(公告)日：2017-02-21

申请号：US15013988

申请日：2016-02-02

Applicant: Sichuan University

Inventor： Jianfeng Liu ,  Heping Xie ,  Yang Ju ,  Yong Xiang ,  Huining Xu ,  Yangmengdi Xu ,  Hang Zou ,  Zhiwei Zhou ,  Yue Zhuo

IPC: G01N3/08

CPC classification number: G01N3/08 ,  G01N3/04 ,  G01N33/24 ,  G01N2203/0017 ,  G01N2203/0405 ,  G01N2203/0447

Abstract: A device for fixing a rock sample, the device including: a lower clamp and an upper clamp. The lower clamp includes: a lower connector connected to a bottom loading base, a lower end cap for fixing samples, a lower chain connecting the lower connector and the lower end cap, a first spiral spring, a first central position-limit mechanism, and a second central position-limit mechanism. The lower end cap includes: a first sample fixing groove and a first connecting segment. The upper clamp includes: an upper connector connected to a top loading base, an upper end cap for fixing the samples, an upper chain connecting with the upper connector and the upper end cap, a second spiral spring, a third central position-limit mechanism, and a fourth central position-limit mechanism. The upper end cap includes a second sample fixing groove and a second connecting segment.

Abstract translation: 一种用于固定岩石样品的装置，该装置包括：下夹具和上夹具。 下夹具包括：连接到底部装载基座的下连接器，用于固定样本的下端盖，连接下连接器和下端盖的下链，第一螺旋弹簧，第一中心位置限位机构和 第二个中心位置限制机制。 下端盖包括：第一样品固定槽和第一连接段。 上夹具包括：连接到顶部装载基座的上连接器，用于固定样品的上端盖，与上连接器和上端盖连接的上链，第二螺旋弹簧，第三中心位置限制机构 ，以及第四中心位置限制机构。 上端盖包括第二样品固定槽和第二连接段。

公开(公告)号：US09488559B2

公开(公告)日：2016-11-08

申请号：US15015086

申请日：2016-02-03

Applicant: Sichuan University

Inventor： Jianfeng Liu ,  Jianliang Pei ,  Huining Xu ,  Lu Wang ,  Zhiwei Zhou ,  Yue Zhuo ,  Feng Dai ,  Wenxi Fu

IPC: G01N3/08

CPC classification number: G01N3/08 ,  G01N3/04 ,  G01N2203/0405 ,  G01N2203/0447

Abstract: A device for fixing a rock sample, the device including: a lower clamp and an upper clamp. The lower clamp includes: a lower connector connected to a bottom loading base, a lower end cap for fixing samples, a lower chain connecting the lower connector and the lower end cap, a first spiral spring, a first central position-limit mechanism, a second central position-limit mechanism, and a first hydraulic mechanism. The lower end cap includes: a first sample fixing groove and a first connecting segment. The upper clamp includes: an upper connector connected to a top loading base, an upper end cap for fixing the samples, an upper chain connecting with the upper connector and the upper end cap, a second spiral spring, a third central position-limit mechanism, fourth central position-limit mechanism, and a second hydraulic mechanism. The upper end cap includes: a second sample fixing groove and a second connecting segment.

Abstract translation: 一种用于固定岩石样品的装置，该装置包括：下夹具和上夹具。 下夹具包括：连接到底部装载基座的下连接器，用于固定样品的下端盖，连接下连接器和下端盖的下链，第一螺旋弹簧，第一中心位置限位机构， 第二中心位置限制机构和第一液压机构。 下端盖包括：第一样品固定槽和第一连接段。 上夹具包括：连接到顶部装载基座的上连接器，用于固定样品的上端盖，与上连接器和上端盖连接的上链，第二螺旋弹簧，第三中心位置限制机构 ，第四中心位置限制机构和第二液压机构。 上端盖包括：第二样品固定槽和第二连接段。

公开(公告)号：US10955574B2

公开(公告)日：2021-03-23

申请号：US16015235

申请日：2018-06-22

Applicant: Sichuan University

Inventor： Jianfeng Liu ,  Lu Wang ,  Huining Xu ,  Jianliang Pei ,  Jun Zheng ,  Wenxi Fu ,  Xiaozhang Lei ,  Jianhui Deng

IPC: G01V1/16 ,  G01V1/18 ,  G01N29/14 ,  G01N29/22

Abstract: The invention discloses a rock damage acoustic monitoring system including an acoustic emission sensor installed in a borehole of a monitored rock mass and a ground workstation. The acoustic emission sensor is composed of an acoustic emission probe and a probe installation mechanism for installing the acoustic emission probe and a transmission mechanism for transmitting the probe installation mechanism. The probe installation mechanism includes a shell, a probe sleeve installed in the shell, an end cap fixed on the upper end surface of the probe sleeve, and a piston hydro-cylinder arranged between the top of the inner wall of the shell and the end cap. The present invention realizes the control of the moving direction of the shell and the probe sleeve by the piston hydro-cylinder component and the hydraulic pump.

公开(公告)号：US10801934B2

公开(公告)日：2020-10-13

申请号：US16036899

申请日：2018-07-16

Applicant: Sichuan University ,  Research Institute of Petroleum Exploration & Development, PetroChina Company Limited

Inventor： Jianfeng Liu ,  Guosheng Ding ,  Zhide Wu ,  Qiqi Wanyan ,  Lina Ran ,  Jianliang Pei ,  Lu Wang ,  Huining Xu ,  Chunping Wang ,  Yilin Liao ,  Qiangxing Zhang ,  Xiaozhang Lei ,  Wenxi Fu ,  Min Zhang

IPC: G01N3/12 ,  G01N3/18 ,  G01N33/24

Abstract: The present invention discloses a rock mechanics experiment system for simulating deep-underground environment, including a triaxial chamber consisting of a chamber cavity and a test pedestal, a stress field building module, a high pressure seepage field building module, a high temperature field building and a seepage medium permeating control measurement module arranged in the triaxial chamber, a lifting module used for installing and disassembling of the chamber cavity, and computer module used for controlling the operation of system and calculating and outputting the test data. The lifting module includes a door-shaped support frame, a cylinder piston device vertically mounted on the door-shaped support frame beam, a coupling device and a safety suspension device. The coupling device includes an oil hydraulic rod with the upper end fixedly coupled with the piston, a safety disk fixedly coupled with the lower end of the hydraulic rod, and two symmetrically disposed coupling assemblies.

公开(公告)号：US09347301B2

公开(公告)日：2016-05-24

申请号：US14335935

申请日：2014-07-20

Applicant: SICHUAN UNIVERSITY

Inventor： Feng Gao ,  Heping Xie ,  Fubao Zhou ,  Yang Ju ,  Lingzhi Xie ,  Yingke Liu ,  Yanan Gao ,  Jianfeng Liu ,  Ru Zhang

IPC: E21B43/247 ,  E21B43/26 ,  E21B43/16

CPC classification number: E21B43/168 ,  E21B43/24 ,  E21B43/247 ,  E21B43/26

Abstract: A pneumatic fracturing method for exploiting shale gas, the method including: 1) applying a compressed gas for a first period of time at a first pressure to a shale formation; 2) applying the compressed gas for a second period of time at a second pressure to the shale formation; and 3) repeating steps 1) and 2) to produce fissures in the shale formation. A temperature of the compressed gas is at least 80° C. A maximum pressure of the compressed gas is at least 25 megapascal, and a minimum pressure of the compressed gas is between ¼ and ⅓ of the maximum pressure.

Abstract translation: 一种开采页岩气的气压破碎方法，该方法包括：1）将第一次压缩的压缩气体以第一压力施加到页岩层; 2）将压缩气体以第二压力施加到页岩层; 和3）重复步骤1）和2）在页岩层中产生裂缝。 压缩气体的温度为至少80℃。压缩气体的最大压力为至少25兆帕，压缩气体的最小压力为最大压力的1/4和1/3。