Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent
1981-02-20
1983-02-08
Novosad, Stephen J.
Wells
Processes
Chemical inter-reaction of two or more introduced materials
165 45, 166 57, 166302, 166303, E21B 4324, E21B 3600
Patent
active
043723861
ABSTRACT:
A method and apparatus for recovering oil from an oil bearing formation utilizing steam injected into the formation. A working fluid is heated at the surface to produce a reversible, chemical reaction, particularly a reforming reaction in a reforming/methanation reaction cycle. The products of the reforming reaction are transported at near ambient temperatures to a downhole heat exchanger through which water is circulated. There a catalyst triggers the methanation reaction, liberating heat energy to convert the water to steam. The products of the methanation reaction are recirculated to the surface to repeat the cycle. In one embodiment the products of the methanation reaction are injected into the formation along with the steam. Various catalysts, and various systems for heating the working fluid are disclosed.
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Meeks Thomas
Rhoades Craig A.
Novosad Stephen J.
Suchfield George A.
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