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U.S. Department of Energy
Office of Scientific and Technical Information

Generation of electricity during the injection of a dense fluid into a subterranean formation

Patent ·
OSTI ID:5875498

Electricity is generated during the injection of a dense fluid through an injection well and into a subterranean formation having a connate fluid pressure less than the available down-hole pressure of injection fluid in the injection well. A fluid engine/generator is positioned in the well to define upper and lower zones in the well. A level of dense fluid is established in the upper zone and flows from the upper zone through the fluid engine/generator and into the subterranean formation to generate electricity, which is subsequently recovered. Control of the down-hole fluid pressure also is achieved. 15 claims.

Assignee:
Union Oil Co., California
Patent Number(s):
US 4132269
OSTI ID:
5875498
Country of Publication:
United States
Language:
English