公开(公告)号：US20210396430A1

公开(公告)日：2021-12-23

申请号：US17351206

申请日：2021-06-17

申请人： Sage Geosystems LLC

发明人： Robert Lance Cook ,  Lev M. Ring

IPC分类号： F24T10/17 ,  E21B43/267

摘要： A system, composition and method for controlling fracture grown in the extraction of geothermal energy from an underground formation includes (i) introducing a first fracking fluid into an underground formation; (ii) introducing a second fracking fluid into the underground formation; wherein the specific gravity of the second fracking fluid is different from the specific gravity of the first fracturing fluid, thereby controlling the growth of at least one fracture in a downward direction, and wherein the fracking fluid in at least one of steps (i) or (ii) contains proppant particles having a thermal conductivity contrast of at least 5.