公开(公告)号：US20240035382A1

公开(公告)日：2024-02-01

申请号：US18277925

申请日：2021-06-30

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

Inventor： Yang JU ,  Peng LIU ,  Yu FEI ,  Xiaodong NIE ,  Yan ZHU

IPC: E21C37/18 ,  E21B41/00 ,  E21B43/28 ,  E21F15/00

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.

公开(公告)号：US20190360904A1

公开(公告)日：2019-11-28

申请号：US16317815

申请日：2018-04-17

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

Inventor： Yang JU ,  Peng LIU ,  Hongbin LIU ,  Yongming YANG

IPC: G01N3/12 ,  G06T17/05 ,  E21B43/16 ,  E21B49/00

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.

公开(公告)号：US20190226958A1

公开(公告)日：2019-07-25

申请号：US16313469

申请日：2017-12-07

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

Inventor： Yang JU ,  Peng LIU ,  Hongbin LIU ,  Yongming YANG

IPC: G01N3/12 ,  G01N3/18

CPC classification number: G01N3/12 ,  G01N3/18 ,  G01N2203/0019 ,  G01N2203/0048 ,  G01N2203/0062 ,  G01N2203/0226 ,  G01N2203/0228 ,  G01N2203/0256 ,  G01N2203/026

Abstract: A device for stress-freezing experiments during fracturing process according to the present application, in which heating and cooling treatment on a specimen under corresponding temperature control according to a preset temperature gradient and a photosensitive curve is performed by a temperature control system, to realize stress-freezing of the specimen; a pressure is applied to a specimen by a true triaxial servo loading system; and corresponding fracturing experiments are performed to the specimen by a fracturing liquid pumping system having an output end arranged in a thermo-controlled oven.