Wells – Processes – Distinct – separate injection and producing wells
Patent
1984-01-23
1985-06-11
Suchfield, George A.
Wells
Processes
Distinct, separate injection and producing wells
166 59, 166303, E21B 4324
Patent
active
045222630
ABSTRACT:
Viscous oil is recovered from a subterranean, viscous oil-containing formation by a steam flooding technique wherein steam is generated in a downhole steam generator located in an injection well by spontaneous combustion of a pressurized mixture of a water-soluble fuel such as sugars and alcohols dissolved in water or a stable hydrocarbon fuel-in-water emulsion containing an anti clay-swelling agent and substantially pure oxygen. The generated mixture of steam and combustion gases pass through the formation, displacing oil and reducing the oil's viscosity and the mobilized oil is produced from the formation via a spaced-apart production well. Suitable anti clay-swelling agents include metal halide salts and diammonium phosphate.
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Hopkins Daniel N.
Snavely Earl S.
Gilman Michael G.
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
Suchfield George A.
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