US3379249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for oil production by steam injection
Assignee: Phillips Petroleum Co
•
Filing: 1966-07-29
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Granted: 1968-04-23
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Expires: 1986-07-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Gilchrist
- 👤 Richard J Sonnenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:20
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20; C; C09; C09K; C09K8/00; C09K8/58; C09K8/592
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS FOR PRODUCING OIL FROM AN OIL STRATUM CONTAINING WATER-SWELLABLE CLAY, WHICH COMPRISES THE STEPS OF: (A) INJECTING A SUBSTANTIAL FLUID SLUG OF AT LEAST ONE ALKYL HALIDE OF THE GROUP CHLORIDES AND BROMIDES THRU AN INJECTION WELL INTO SAID STRATUM TOWARD A PRODUCTION WELL THEREIN; (B) THEREAFTER, INJECTING A SUBSTANTIAL SLUG OF AMMONIA THRU SAID INJECTION WELL BEHIND THE SLUG OF STEP (A); (C) INJECTING STEAM INTO SAID STRATUM BEHIND THE SLUGHS OF STEPS (A) AND (B) TO CAUSE MIXING OF SAID SLUGS AND REACTION OF SAID ALKYL HALIDE AND AMMONIA TO FORM AMINES AND DRIVE AN AQEUOUS FRONT THRU SAID STRATUM TOWARD SAID PRODUCTION WELL TO PRODUCE OIL THEREIN; AND (D) RECOVERING PRODUCED FLUIDS FROM SAID PRODUCTION WELL.
Claim 2
Dependent Claim
121 words
A PROCESS FOR PRODUCING OIL FROM AN OIL STRATUM CONTAINING WATER-SWELLABLE CLAY, WHICH COMPRISES THE STEPS OF: (A) INJECTING A SUBSTANTIAL FLUID SLUG OF AT LEAST ONE ALKYL HALIDE OF THE GROUP CHLORIDES AND BROMIDES THRU AN INJECTION WELL INTO SAID STRATUM TOWARD A PRODUCTION WELL THEREIN; (B) THEREAFTER, INJECTING A SUBSTANTIAL SLUG OF AMMONIA THRU SAID INJECTION WELL BEHIND THE SLUG OF STEP (A); (C) INJECTING STEAM INTO SAID STRATUM BEHIND THE SLUGHS OF STEPS (A) AND (B) TO CAUSE MIXING OF SAID SLUGS AND REACTION OF SAID ALKYL HALIDE AND AMMONIA TO FORM AMINES AND DRIVE AN AQEUOUS FRONT THRU SAID STRATUM TOWARD SAID PRODUCTION WELL TO PRODUCE OIL THEREIN; AND (D) RECOVERING PRODUCED FLUIDS FROM SAID PRODUCTION WELL.
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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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |