VISUALIZATION SYSTEM AND METHOD FOR MULTIPHASE FLUIDS DISPLACEMENT EXPERIMENT WITH LARGE VISCOSITY DIFFERENCE IN COMPLEX PORE STRUCTURE

    公开(公告)号:US20220091013A1

    公开(公告)日:2022-03-24

    申请号:US17296998

    申请日:2020-04-26

    Abstract: A visualization system and method for a multiphase fluids displacement seepage experiment with large viscosity difference in a complex pore structure. The visualization system includes: an injection pump assembly, a visualized complex pore model, a vacuum pressure pump and an image acquisition device; the system and method are printed by a 3D printing device to form the visualized complex pore model with at least two permeability, and displacement fluid mediums of different viscosities are injected into the visualized complex pore model through different injection pumps during an experiment, so that not only is the penetration of the same viscosity in the complex pore structure with different permeability observed, but also the displacement and plugging effect of different viscosities successively entering the complex pore structure with different permeability is realized.

    METHOD FOR MEASURING STRESS FIELD VARIATIONS DURING CO2 FRACTURING PROCESS

    公开(公告)号:US20190360904A1

    公开(公告)日:2019-11-28

    申请号:US16317815

    申请日:2018-04-17

    Abstract: A method for measuring a stress field evolution during a CO2 fracturing process is provided, which is adopted to not only transparently display the spatial distribution and propagation morphology of internal fracturing fracture of a three-dimensional physical models, but also obtain internal three-dimensional stress phase diagram in a fracture propagation process by integration of a CT scanning, a digital reconstruction, a 3D printing, a CO2 fracturing experiment, a stress freezing and a photoelastic measurement techniques, thereby realizing transparent display and quantitative characterization of the three-dimensional stress field and its evolution law of a solid matter in the CO2 fracturing process.

    INDUSTRIAL CT SCANNING TEST SYSTEM AND FLUID PRESSURE LOADING APPARATUS

    公开(公告)号:US20170350832A1

    公开(公告)日:2017-12-07

    申请号:US15539811

    申请日:2016-07-05

    Abstract: A fluid pressure loading device applied to an industrial computed tomography scanning test system includes a body, a sample accommodating chamber and at least one fluid medium chamber being provided in the body. Each of the at least one fluid medium chamber is provided therein with a piston, the corresponding fluid medium chamber is separated into two chambers by the piston, one of the two chambers is in communication with an external hydraulic medium via oil lines provided in the body, the other of the two chambers is in communication with the sample accommodating chamber, and one end, facing towards the sample accommodating chamber, of the piston is extendable into the sample accommodating chamber. With the loading device, real-time loading of a test sample can be realized, thus improving a simulation accuracy of the system, and multi-directional loading of the sample can be realized.

    FLUIDIZED COAL MINING METHOD FOR IMPLEMENTING CO2 UNDERGROUND STORAGE

    公开(公告)号:US20240035382A1

    公开(公告)日:2024-02-01

    申请号:US18277925

    申请日:2021-06-30

    CPC classification number: E21C37/18 E21B41/0064 E21B43/28 E21F15/005

    Abstract: A fluidized coal mining method for implementing CO2 underground storage, includes mining area division, tunneling mining, filling and supporting, roof and bottom plate sealing, and boundary surrounding rock sealing. A goaf formed by a mining device after tunneling and mining along a mining strip is filled and supported, and filling and supporting can form a high-strength supporting wall body, which not only provides an effective supporting effect for roof and bottom plate rocks, but also forms a filled and supported wall body; a space for underground storage of CO2 is formed between adjacent filled and supported wall bodies; at the same time, the mining device further seals the roof and a bottom plate of the goaf, and seals boundary surrounding rocks of a mine field, so that the entire mine field forms a whole closed space for the underground storage of CO2 after mining is completed.

    MINING MACHINE APPLICABLE TO FLUIDIZED MINING OF ORE BODIES AND MINING METHOD

    公开(公告)号:US20210317739A1

    公开(公告)日:2021-10-14

    申请号:US17059477

    申请日:2019-06-05

    Abstract: A mining machine applicable to fluidized mining and a mining method therefor are provided herein. A microwave transmitting mechanism, a liquid jet drill rod and a cutter-head are arranged at the head of a first excavation device of the mining machine. The ore body in front is first processed by the microwave transmitting mechanism and the liquid jet drill rod to reduce the strength of the ore body, which facilitates subsequent mining of the ore body, lowers the hardness requirements of the cutter-head, and reduces the wearing of the cutter-head. With this mining machine mining the ore body, the mined ores can be directly converted, under the ground, into resources in the easily transportable form, without transporting the ore to the surface for conversion, which saves the cost of transporting the ore to the surface.

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