TOP-DOWN OIL RECOVERY
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United States of America Patent
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Issued Date -
Nov 13, 2014
app pub date -
May 9, 2014
filing date -
May 9, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Methods relate to producing hydrocarbons, such as bitumen in an oil sands reservoir. The methods include utilizing an injector well with multiple horizontal laterals to provide downward fluid drive toward a producer well. Combined influence of gravity and a dispersed area of the fluid drive due to the laterals facilitate a desired full sweep of the reservoir. Fluids utilized for injection include water heated to less than 60 weight percent steam, solvent for the hydrocarbons and emulsifying agent for the hydrocarbons. The methods employing these fluids provide energy efficient recovery of the hydrocarbons.
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