Patent US3205943A successfully refreshed from Google Patents.
US3205943A
Expired / Lapsed
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Recovery method for petroleum
Assignee: ExxonMobil Oil Corp
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Filing: 1959-08-20
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Granted: 1965-09-14
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Expires: 1979-08-20
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Foulks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:06
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A PROCESS FOR THE RECOVERY OF LIQUID MATERIAL FROM A SUBTERRANEAN FORMATION PENETRATED BY AN EVEN NUMBER AT LEAST AS GREAT AS SIX OF PRODUCTION WELLS EACH OF WHICH IS EQUIDISTANTLY SPACED FROM EACH OF THE TWO NEAREST ADJACENT PRODUCTION WELLS AND POSITIONED IN A GEOMETRIC PATTERN HAVING AN INPUT WELL AT ITS MIDPOINT COMPRISING INJECTING INTO SAID INPUT WELL A FLUID CAPABLE OF DISPLACING SAID LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION, PRODUCING LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION FROM A FIRST PRODUCTION MEANS COMPRISING ONLY EVERY OTHER ONE OF SAID PRODUCTION WELLS WHICH ARE EQUALLY SPACED FROM SAID INPUT WELL A DISTANCE NOT GREATER THAN THE DISTANCE BETWEEN EACH OF THE REMAINDER OF SAID PRODUCTION WELLS AND SAID INPUT WELL UNTIL SAID DISPLACING FLUID ARRIVES AT SAID PRODUCTION WELLS FROM WHICH SAID LIQUID MATERIAL HAS BEEN PRODUCED, CLOSING OFF SAID PRODUCTION WELLS FROM WHICH SAID LIQUID MATERIAL HAS BEEN PRODUCED, CONTINUING TO INJECT INTO SAID INPUT WELL A FLUID CAPABLE OF DISPLACING SAID LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION, AND PRODUCING LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION FROM A SECOND PRODUCTION MEANS COMPRISING THE REMAINDER OF SAID PRODUCTION WELLS.
Claim 2
Dependent Claim
194 words
A PROCESS FOR THE RECOVERY OF LIQUID MATERIAL FROM A SUBTERRANEAN FORMATION PENETRATED BY AN EVEN NUMBER AT LEAST AS GREAT AS SIX OF PRODUCTION WELLS EACH OF WHICH IS EQUIDISTANTLY SPACED FROM EACH OF THE TWO NEAREST ADJACENT PRODUCTION WELLS AND POSITIONED IN A GEOMETRIC PATTERN HAVING AN INPUT WELL AT ITS MIDPOINT COMPRISING INJECTING INTO SAID INPUT WELL A FLUID CAPABLE OF DISPLACING SAID LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION, PRODUCING LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION FROM A FIRST PRODUCTION MEANS COMPRISING ONLY EVERY OTHER ONE OF SAID PRODUCTION WELLS WHICH ARE EQUALLY SPACED FROM SAID INPUT WELL A DISTANCE NOT GREATER THAN THE DISTANCE BETWEEN EACH OF THE REMAINDER OF SAID PRODUCTION WELLS AND SAID INPUT WELL UNTIL SAID DISPLACING FLUID ARRIVES AT SAID PRODUCTION WELLS FROM WHICH SAID LIQUID MATERIAL HAS BEEN PRODUCED, CLOSING OFF SAID PRODUCTION WELLS FROM WHICH SAID LIQUID MATERIAL HAS BEEN PRODUCED, CONTINUING TO INJECT INTO SAID INPUT WELL A FLUID CAPABLE OF DISPLACING SAID LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION, AND PRODUCING LIQUID MATERIAL CONTAINED WITHIN SAID SUBTERRANEAN FORMATION FROM A SECOND PRODUCTION MEANS COMPRISING THE REMAINDER OF SAID PRODUCTION WELLS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |