Wells – Processes – In situ combustion
Patent
1978-10-02
1980-01-15
Leppink, James A.
Wells
Processes
In situ combustion
166268, 166305R, E21B 4318, E21B 4324
Patent
active
041834054
ABSTRACT:
Hydrogen and other gases that are miscible in petroleum are injected into an underground reservoir to the extent that the volume of hydrogen exceeds the absorption capacity of the petroleum, thereby forming a gas cap composed substantially of hydrogen. Petroleum is withdrawn from the reservoir in part under the influence of gases absorbed into the petroleum and in part under the influence of increased reservoir pressure created by an artificial gas cap. Reservoir temperature is increased by establishing a combustion zone within the underground petroleum reservoir. Hydrogen is withdrawn from the artificial gas cap and is reinjected into the petroleum adjacent to the combustion zone with the resultant hydrogenation of the petroleum.
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Leppink James A.
Suchfield George A.
Terry Ruel C.
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