US 12,169,147 B2
System and method for testing stress strain of porous rock under fluid-solid coupling effects
Yang Ju, Beijing (CN); Jiangtao Zheng, Beijing (CN); Zhangyu Ren, Beijing (CN); and Wenbo Gong, Beijing (CN)
Assigned to CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING, Beijing (CN)
Appl. No. 18/039,993
Filed by CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING, Beijing (CN)
PCT Filed Nov. 11, 2021, PCT No. PCT/CN2021/130032
§ 371(c)(1), (2) Date Jun. 2, 2023,
PCT Pub. No. WO2023/082133, PCT Pub. Date May 19, 2023.
Prior Publication US 2023/0349779 A1, Nov. 2, 2023
Int. Cl. G01L 1/24 (2006.01); G01N 3/12 (2006.01); G01N 15/08 (2006.01)
CPC G01L 1/24 (2013.01) [G01N 3/12 (2013.01); G01N 15/082 (2013.01); G01N 2203/0048 (2013.01); G01N 2203/0075 (2013.01); G01N 2203/0647 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A test system under a hydromechanical coupling effect, comprising:
a porous medium model, which is made of a material with stress birefringence;
a porous medium model loading device, wherein the porous medium model is placed in the porous medium model loading device, the porous medium model loading device imposes boundary constraints on the porous medium model, and performs high-pressure injection of stress birefringence fluid in pores, so as to form the hydromechanical coupling effect of fluid flow process;
a measuring device that obtains:
a photoelastic fringe image and determines a stress field of a fluid and a porous skeleton under the hydromechanical coupling effect; and
a surface deformation image of the porous medium model under the hydromechanical coupling effect and determines a strain field of the porous skeleton and/or a fluid-solid interface under the hydromechanical coupling effect.