Method for producing viscous hydrocarbon using incremental fracturing
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United States of America Patent
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Issued Date -
Jul 27, 2006
app pub date -
Jan 9, 2006
filing date -
Jan 25, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for producing viscous hydrocarbon formations involves the use of a downhole burner. The well undergoes a mild hydraulic fracturing process that limits the fractured zone to a relatively small dimension so as to avoid intersecting any drainage zones of adjacent wells. The operator pumps fuel, steam and oxygen to the burner, which bums the fuel, causing the flow of hot, gaseous fluids into the fractured zone. The steam delivered from the surface cools the burner and becomes superheated as it enters the fractured zone. The operator allows the fractured zone to soak, then produces the oil. After the production declines, the operator may repeat the fracturing to incrementally increase the fractured zone, then repeat the injection and soak cycles.
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