公开(公告)号：US10564080B2

公开(公告)日：2020-02-18

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: G01N3/00 ,  G01N3/12 ,  G06T17/05 ,  E21B43/16 ,  E21B49/00 ,  B33Y80/00 ,  B33Y10/00

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：US10408721B2

公开(公告)日：2019-09-10

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

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.