Patent US4113017A successfully refreshed from Google Patents.
US4113017A
Expired / Lapsed
US
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Hot effluent from partial oxidation of natural gas injected in oil recovery process
Assignee: Phillips Petroleum Co
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Filing: 1976-12-09
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Granted: 1978-09-12
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Expires: 1996-12-09
Abstract
Abstract Natural gas is subjected to partial oxidation with the hot effluent from the oxidation injected into an underground formation to provide hot contact fluid, solvent liquids, and drive force for recovering oil from the formation. In one embodiment liquid product, including methanol, is recovered from the hot oxidation effluent before injection of the effluent into the underground formation.
Inventors
- 👤 Donald O. Hitzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:04
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/166; E21B43/168; E21B43/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A method for recovering oil from an underground formation comprising injecting into said formation combustion products containing both gas and liquid from partial oxidation of natural gas said combustion products at a temperature in the range of about 250° to about 400° F thereby providing hot gases, liquid solvent, and driving force for treatment of said underground formation.
Claim 2
Independent Claim
58 words
A method for recovering oil from an underground formation comprising injecting into said formation combustion products containing both gas and liquid from partial oxidation of natural gas said combustion products at a temperature in the range of about 250° to about 400° F thereby providing hot gases, liquid solvent, and driving force for treatment of said underground formation.
Claim 3
Dependent Claim
34 words
A method of claim 1 wherein liquid products from said partial oxidation of natural gas are partially removed from said hot combustion products before injection of the hot combustion products into said underground formation.
Claim 4
Dependent Claim
35 words
A method of claim 1 wherein the pressure of said hot combustion products is increased by mechanical means so that said pressure is sufficient for injection of the hot combustion products into said underground formation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |