Chinese Academy of Sciences

Yintong Guo

Chunhe Yang

Xilin Shi

Yuhao Zhang

Hongwu Yin

Hongling Ma

Yinping Li

Yue Han

Tongtao Wang

Hejuan Liu

Shengnan Ban

Xiaosong Qiu

Weimin Wang

Haijun Mao

Mancang Liu

The application discloses a method and device for making a physical fault model and empirically evaluating its sealing performance. The method comprises S1 preparing a fault filling zone model; S2 testing the initial permeability of the fault filling zone model before sealing it with nano-microsphere infused slurry; S3 placing the fault filling zone model into reservoir rocks, drilling slurry injection wellbores in the reservoir rocks on both sides of the fault filling zone model, and creating a perforation section near the bottom of the slurry injection wellbore directed towards the fault filling zone model; subsequently, injecting nano-microsphere infused slurry into the slurry injection wellbore to perform a sealing experiment; S4 taking out the fault filling zone model after the slurrying process in S3 and repeating S2 to test the permeability of the model after sealing; and S5 calculating the sealing performance index of the fault filling zone model.

Method and device for making physical fault model and empirically evaluating sealing performance

The present invention discloses a device, system and method triaxial compression test with/without jacket by gas confining pressure on rock, and belongs to the technical field of rock mechanics tests. The device includes a container, wherein an accommodating cavity is disposed in the container for placing a core sample, a first through hole and a second through hole are respectively disposed at an upper end of the container, the first through hole is used for penetration of an end cap for loading an axial pressure to the core sample, the second through hole is used for injecting a gas into the accommodating cavity so as to apply a gas confining pressure on the core sample, a third through hole is disposed at a lower end of a side wall of the container, and the third through hole is used for communicating the accommodating cavity with the triaxial cell so as to achieve pressure transfer and balance between the accommodating cavity and the triaxial cell. During application, the device is installed in the triaxial cell. The container is inflated by a gas inlet and outlet of the triaxial cell and a communicating tube, the internal pressure applied by a high pressure gas on a near field rock wall of a salt cave can be accurately simulated, and a triaxial compression test with/without jacket by gas confining pressure on rock is conducted.

Device, system and method for triaxial compression test with/without jacket by gas confining pressure on rock

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Wuhan, China

Yintong Guo