US 12,474,304 B2
Seepage and acoustic wave coupling system for rock tensile testing
Jianfeng Liu, Sichuan (CN); Mancang Liu, Sichuan (CN); Xiaosong Qiu, Sichuan (CN); Lu Wang, Sichuan (CN); Jinbing Wei, Sichuan (CN); Jianliang Pei, Sichuan (CN); Huining Xu, Sichuan (CN); Zhide Wu, Sichuan (CN); Yunhe Su, Sichuan (CN); Shujuan Xu, Sichuan (CN); Xin Lai, Sichuan (CN); and Jianxiong Yang, Sichuan (CN)
Assigned to Sichuan University, Sichuan (CN); and Research Institute of Petroleum Exploration & Development, PetroChina Company Limited, Beijing (CN)
Filed by Research Institute of Petroleum Exploration & Development, PetroChina Company Limited, Beijing (CN); and Sichuan University, Sichuan (CN)
Filed on Aug. 25, 2023, as Appl. No. 18/455,957.
Claims priority of application No. 202211045016.5 (CN), filed on Aug. 30, 2022.
Prior Publication US 2024/0068991 A1, Feb. 29, 2024
Int. Cl. G01N 29/14 (2006.01); G01N 3/04 (2006.01); G01N 29/28 (2006.01); G01N 3/08 (2006.01)
CPC G01N 29/14 (2013.01) [G01N 3/04 (2013.01); G01N 29/28 (2013.01); G01N 3/08 (2013.01); G01N 2203/0017 (2013.01); G01N 2203/0658 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A clamping triaxial seepage and acoustic coupling rock tensile testing machine, wherein the machine comprises a sample (6) and a scaffold-type tensile testing device (5); the scaffold-type tensile testing device (5) is provided with an upper chuck (101) and a lower chuck (102); the upper chuck (101) and the lower chuck (102) both comprise a connecting column (1) and a plurality of clamping teeth (4); one end of each connecting column (1) is installed on the scaffold-type tensile testing device (5); the clamping teeth (4) are hinged with the other end of the connecting column (1); the plurality of clamping teeth (4) are enclosed into a clamping cavity; an outer wall of each clamping tooth (4) is in a circular arc shape and is provided with an external thread; the outer wall of each clamping tooth (4) is provided with a screwing ring (3) matching with the external thread; and a diameter of the outer wall of each clamping tooth (4) gradually decreases in a direction toward the connecting column (1);
the upper chuck (101) is provided with an acoustic transmitting channel (9); one end of the acoustic transmitting channel (9) is communicated with the outside; the other end is provided with an acoustic transmitting probe (10); and a transmitting direction of the acoustic transmitting probe (10) is downward;
the lower chuck (102) is provided with an acoustic receiving channel (19); one end of the acoustic receiving channel (19) is communicated with the outside; the other end is provided with an acoustic receiving probe (20); the acoustic receiving probe (20) receives an acoustic wave transmitted by the acoustic transmitting probe (10);
the clamping teeth (4) of the upper chuck (101) clamp an upper end of the sample (6); the clamping teeth (4) of the lower chuck (102) clamp a lower end of the sample (6); an upper end face of the sample (6) is provided with a seepage outflow hole; the upper chuck (101) is provided with a seepage outflow channel (13); one end of the seepage outflow channel (13) is connected with the seepage outflow hole, and the other end is communicated with the outside; a lower end face of the sample (6) is provided with a seepage inflow hole; the lower chuck (102) is provided with a seepage entry channel (17); and one end of the seepage entry channel (17) is connected with the seepage inflow hole, and the other end is communicated with the outside.