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

Production of hydrocarbons by fracturing and fluid drive

Patent ·
OSTI ID:6625729
This is a method of fracturing an oil-bearing formation and for producing hydrocarbons from it through a single well. A permeable section of a carbonaceous stratum is fractured by applying fluid pressure on a selected restricted area of the well wall until the stratum is fractured radially outward. A powdered material such as talc is injected as a plugging agent with the injected fluid while flow of fluid through the permeable zone around a packer is maintained into the well bore and out of the tubing and the annulus between the tubing and the well wall. Accordingly, the plugging agent progressively plugs the porous wall of the fracture from the well wall outward into the stratum. Thereafter, the injection of the plugging agent is terminated while injection of the fracturing fluid is continued so that the fracture is extended deeper into the stratum. A hot fluid, such as steam, at a temperature between 250 to 500$F is injected through the annulus into the fracture. The flushed-out crude is produced through the tubing. (18 claims)
Assignee:
Phillips Petroleum Co.
Patent Number(s):
US 3180414
OSTI ID:
6625729
Country of Publication:
United States
Language:
English