Reservoir Behaviour in a Stimulated Hot Dry Rock System

摘要: Research into the stimulation of hot dry rock (HDR) systems in crystalline has been underway Cornwall, England for several years. Two deviated wells were drilled to a depth 2100 m 1981 with an interwell separation 300 m. These connected by massive hydraulic injections using water, but interconnection was insufficient permit long term circulation without excessive water losses. In 1985 third well 2600 direction chosen from analysis reservoir behavior during previous circulation. A (200 l/s, 75 bbl/min) gel used connect and re-established August 1985. Reservoir models have developed analyses, thermal behavior, microseismic mapping, tracer dispersion chemical modeling. The system behaves like interconnected network flow paths few dominant routes acting as conduits. storage is associated pressure dependent joint compliance, it isolated paths. No unique physical model yet derived various techniques establish constraints on geometry nature heat transfer regions. experimentsmore » are still progress.« less