公开(公告)号：US10975694B2

公开(公告)日：2021-04-13

申请号：US16467490

申请日：2018-03-23

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING ,  SHENZHEN UNIVERSITY

发明人： Yang Ju ,  Heping Xie ,  Yong Zhang ,  Yan Zhu ,  Feng Gao ,  Xiaodong Nie ,  Changbing Wan ,  Jinxin Song ,  Chang Lu ,  Hongbin Liu ,  Zhangyu Ren

IPC分类号： E21C41/16 ,  E21C41/18 ,  E21C45/00

摘要： A mine field layout method suitable for fluidized mining of coal resources is provided. A main shaft and an air shaft are provided in the mine field, the bottom of the main shaft is located in the shallow horizontal coal seam zone, and the bottom of the air shaft is located in the deep horizontal coal seam zone. The horizontal main roadways are arranged at two boundaries along the strike of the coal seam, and inclined main roadways are arranged at two boundaries along the dip direction of the coal seam. Connecting roadways are located inside the mine field and are in communication with the horizontal main roadways. In the coal mining stage, the coal resources can be converted into the fluidized energy product and/or electricity by an unmanned automatic mining machine.

公开(公告)号：US11371320B2

公开(公告)日：2022-06-28

申请号：US17296224

申请日：2020-04-24

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

发明人： Yang Ju ,  Jinxin Song ,  Peng Liu

IPC分类号： E21B41/00 ,  G01V99/00 ,  E21B43/26

摘要： An experimental method and system for simulating the evolution of reservoir fracture stress field, the experimental method comprises the following steps: (S1) preparing horizontal well fracturing model (100); (S2) applying boundary loads and constraints to the horizontal well fracturing model (100); (S3) injecting fracturing fluid or fracturing gas into a fracturing wellbore (130) of the horizontal well fracturing model (100) after loading for fracturing; in a fracturing stage, a photoelastic fringe image of the horizontal well fracturing model (100) is obtained by an optical phase shift method; the fracturing stage comprises an initial state before fracturing fluid or fracturing gas is injected and an end state after fracturing is completed. The experimental method and system can effectively simulate the whole process of horizontal well fracturing, and accurately obtain the variation law of reservoir stress field and its influence on crack propagation during horizontal well fracturing.