公开(公告)号：US12092558B1

公开(公告)日：2024-09-17

申请号：US18678292

申请日：2024-05-30

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Zhouhua Wang ,  Hanmin Tu ,  Xintong Zhang ,  Ping Guo ,  Shuoshi Wang ,  Huang Liu ,  Zhicheng Yang ,  Xingliang Deng ,  Zhiliang Liu ,  Yisheng Hu ,  Hongnan Yang ,  Ping Le ,  Tongwen Jiang ,  Guangya Zhu ,  Nan Li

IPC: G01N15/08 ,  E21B49/08

CPC classification number: G01N15/0826 ,  E21B49/087 ,  G01N2203/0044

Abstract: The present invention discloses a gas based testing method for a pore volume compressibility of a low-permeability rock. The method comprises the following steps: obtaining a compressibility and an isothermal adsorption-desorption curve of experimental gas under a reservoir condition; performing a physical simulation experiment by using a steel core drilled with a through hole, and obtaining a gas volume collected due to the deformation of an experimental instrument; then repeating the experiment by using an actual core with the same size, and obtaining pore volumes of the reservoir core under the experimental conditions by deducting deformation of the instrument; and finally, obtaining a pore compressibility of the reservoir core under different reservoir conditions according to the pore volumes of the reservoir core under different reservoir conditions. The present invention considers gas adsorption, corrects errors caused by deformation of a physical simulation device.

公开(公告)号：US11940367B2

公开(公告)日：2024-03-26

申请号：US18501936

申请日：2023-11-03

Applicant: Southwest Petroleum University

Inventor： Ping Yue ,  Hongnan Yang ,  Yuan Lei ,  Xu Zheng ,  Peng Song ,  Pengyu Chen ,  Zhouhua Wang ,  Simin Qu

IPC: G01N15/08 ,  G01N33/24

CPC classification number: G01N15/0806 ,  G01N33/24

Abstract: A device for simulating carbon dioxide storage in a deep saline aquifer, including a CO2 gas source, first and second valves, first and second pressure pumps, first, second and third pressure gauges, a water storage tank, a simulation box, a first flow meter, a gas-liquid separator, a recycling tank, a microcomputer-display assembly, a structure plate, core holders, an injection pipeline, a connection pipeline, a baffle, a piezometer, a second flow meter, a heater, a lifter and an acoustic logging tool. The CO2 gas source, the first valve, the first pressure pump and the first pressure gauge for gas injection. The water storage tank, a second pressure pump and a second pressure gauge for water injection. The second valve, the third pressure gauge, the first flow meter, the gas-liquid separator and the recycling tank form an output pipeline.