一种干热岩柔性造储的方法
By combining graphene-based inorganic gel systems with organic acids, the problems of high rock strength, high seismic risk, and low heat extraction efficiency in the stimulation of hot dry rock reservoirs have been solved, forming a highly efficient complex fracture network, which improves the heat extraction efficiency and stability of hot dry rock reservoirs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU UNIVERSITY OF TECHNOLOGY
- Filing Date
- 2024-03-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing dry hot rock reservoir stimulation technologies suffer from problems such as high rock strength, high fracturing pressure, seismic risk, difficulty in forming a fracture network due to single fractures, thermal short circuits, and low heat extraction efficiency.
A graphene-based inorganic gel system was used as the pre-fluid, combined with an organic acid slug displacement fluid and a conventional fracturing slickwater system as the main fluid. The dry hot rock reservoir was modified by slug fracturing to form a complex fracture network. A high thermal conductivity fin structure was then solidified at the end of the fracture network to improve heat extraction efficiency.
It achieves reduced crack initiation pressure, reduced earthquake risk, formation of complex fracture networks, improved heat extraction efficiency and fracture network stability, enhanced heat dissipation capacity, and improved utilization rate of heat extraction medium.
Smart Images
Figure CN118187795B_ABST