Southwest Petroleum University

Hongnan Yang

Zhouhua Wang

Ping Guo

Yisheng Hu

Huang Liu

Shuoshi Wang

Ping Yue

Hanmin Tu

Pengyu Chen

Nan Li

Xingliang Deng

Yuan Lei

Tongwen Jiang

Xintong Zhang

Ping Le

Peng Song

Zhicheng Yang

Xu Zheng

Simin Qu

Zhiliang Liu

Guangya Zhu

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.

Gas based testing method for pore volume compressibility of low-permeability rock

A device for simulating carbon dioxide storage in a deep saline aquifer, including a COgas 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 COgas 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.

Device for simulating carbon dioxide storage in deep saline aquifer

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Chengdu, China

Hongnan Yang