公开(公告)号：US20190360904A1

公开(公告)日：2019-11-28

申请号：US16317815

申请日：2018-04-17

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

发明人： Yang JU ,  Peng LIU ,  Hongbin LIU ,  Yongming YANG

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

摘要： 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

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

发明人： Yang JU ,  Peng LIU ,  Hongbin LIU ,  Yongming YANG

IPC分类号： G01N3/12 ,  G01N3/18

CPC分类号： G01N3/12 ,  G01N3/18 ,  G01N2203/0019 ,  G01N2203/0048 ,  G01N2203/0062 ,  G01N2203/0226 ,  G01N2203/0228 ,  G01N2203/0256 ,  G01N2203/026

摘要： 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.