Patent ID: 11965677
Assignee: SAGE GEOSYSTEMS INC.
Field: Civil engineering (Other fields)
Classification: CPC F  E  Y | IPC E  F

Claim 0:
1. A method of controlling fracture growth in the extraction of geothermal energy from an underground formation, comprising;
(i) introducing a first fracking fluid into an underground formation;
(ii) introducing a second fracking fluid into the underground formation;
wherein a specific gravity of the second fracking fluid is different from a specific gravity of the first fracking fluid, thereby controlling the growth of at least one fracture in a downward direction;
wherein the first fracking fluid and the second fracking fluid in at least one of steps (i) or (ii) contains proppant particles having a thermal conductivity contrast of at least 5; and,
wherein at least one of the first fracking fluid and the second fracking fluid is a Zinc Bromide brine mixed to a density which exceeds a fracture gradient of a formation to be fractured.