Importance

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Abstract

Radio frequency radiation is introduced downhole to heat one or more components of an in-situ hydrocarbon mixture. The mixture is heated to a temperature conducive to auto-ignition. Upon heating, an oxidant is introduced at conditions supportive of auto-ignition. The combined oxidant/hydrocarbon mixture is then allowed to auto-ignite and combust to form a partially upgraded mixture. Certain embodiments include introducing an ignition agent to facilitate auto-ignition. The radio frequency radiation may be supplemented, continued, or varied as desired to maintain, facilitate, or manage the resulting combustion process. In some cases, an activator is introduced to the formation to interact with the generated radio frequency radiation to enhance hydrocarbon heating. Advantages of certain embodiments include lower cost, reduced heating/ignition equipment, higher efficiencies, increased hydrocarbon recovery, and fewer auto-ignition failures.

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First Claim