Generating heated fluid
First Claim
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1. A method for treating a subterranean zone, comprising:
- exothermically decomposing hydrogen peroxide downhole in or near the subterranean zone to yield at least oxygen and heated water;
receiving a hydrocarbon fuel, communicated from a location remote to the subterranean zone, at a location downhole in or near the subterranean zone;
combusting the oxygen and the hydrocarbon fuel downhole in or near the subterranean zone to further heat the heated water; and
treating the subterranean zone with the heated water.
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Abstract
A subterranean zone is treated by exothermically decomposing hydrogen peroxide in or near the subterranean zone. The decomposed hydrogen peroxide yields at least oxygen and heated water. The oxygen is combusted to further heat the heated water. The heated water is introduced into subterranean zone to treat the subterranean zone. In certain instances, the heated water is heated to produce 100% quality steam. Additional water may be supplied for treating the subterranean zone, for example, by supplying the hydrogen peroxide in solution with water.
13 Citations
23 Claims
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1. A method for treating a subterranean zone, comprising:
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exothermically decomposing hydrogen peroxide downhole in or near the subterranean zone to yield at least oxygen and heated water; receiving a hydrocarbon fuel, communicated from a location remote to the subterranean zone, at a location downhole in or near the subterranean zone; combusting the oxygen and the hydrocarbon fuel downhole in or near the subterranean zone to further heat the heated water; and treating the subterranean zone with the heated water. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for treating a subterranean zone, comprising:
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a downhole reactor having a catalyst for decomposing hydrogen peroxide into at least heated water and oxygen; a downhole separator configured to separate the heated water from the oxygen; and a downhole combustor in communication with the downhole reactor and configured to receive the heated water and oxygen and receive a hydrocarbon fuel communicated to the combustor through a fuel conduit coupled to the combustor, combust the oxygen and the hydrocarbon fuel to further heat the heated water and output the heated water to the subterranean zone. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method, comprising:
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receiving hydrogen peroxide and hydrocarbon fuel from a location at the surface into a well bore; contacting the hydrogen peroxide with a catalyst to decompose it into at least heated water and oxygen; separating the heated water and the oxygen in the well bore; and combusting the oxygen and the hydrocarbon fuel to further heat the heated water. - View Dependent Claims (21, 22, 23)
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Specification