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.