US3280909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing an oil bearing formation
Assignee: Shell USA Inc
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Filing: 1964-01-20
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Granted: 1966-10-25
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Philip J Closmann
- 👤 Charles S Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/30; E21B43/16; E21B43/24; E21B43/2405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A METHOD OF RECOVERING OIL FROM AN UNDERGROUND OIL-BEARING FORMATION WHICH IS PENETRATED BY A PLURALITY OF WELLS, AT LEAST ONE OF SAID WELLS BEING NORMALLY A FLUIDINJECTION WELL AND AT LEAST ONE WELL ADJACENT SAID INJECTION WELL BEING NORMALLY AN OI-PRODUCTION WELL, SAID METHOD COMPRISING ESTABLISHING COMMUNICATING BETWEEN ALL OF SAID WELLS AND THE OIL-BEARING FORMATION SURROUNDING SAID WELLS, HORIZONTALLY FRACTURING THE FORMATION BETWEEN A FLUIDINJECTION WELL AND AT LEAST ONE ADJACENT OIL-PRODUCTION WELL IN A MANNER SUCH THAT THE WELLS ARE IN FLUID-FLOW COMMUNICATION WITH EACH OTHER THROUGH THE OIL-BEARING FORMATION, INJECTING HOT PREHEAT FLUID DOWN BOTH THE FLUID-INJECTION AND OIL-PRODUCTON WELLS AND THROUGH SAID COMMUNICATING FRACTURE AND INTO SAID OIL-BEATRING FORMATION, MAINTAINING SAID INJECTION OF HOT PREHEAT FLUID INTO BOTH SAID FLUID-INJECTON AND OIL-PRODUCTION WELLS FOR A TIME AND AT A TEMPERATURE SUFFICIENT TO PREHEAT AT LEAST THAT PORTION OF THE OIL-BEARING FORMATION ADJACENT THE COMMUNICATING FRACTURE TO A CONDITION WHERE THE OIL IN SAID FORMATION FLOWS IN RESPONSE TO PRESSURE LESS THAN OVERBURDEN PRESSURE,
Claim 2
Independent Claim
168 words
A METHOD OF RECOVERING OIL FROM AN UNDERGROUND OIL-BEARING FORMATION WHICH IS PENETRATED BY A PLURALITY OF WELLS, AT LEAST ONE OF SAID WELLS BEING NORMALLY A FLUIDINJECTION WELL AND AT LEAST ONE WELL ADJACENT SAID INJECTION WELL BEING NORMALLY AN OI-PRODUCTION WELL, SAID METHOD COMPRISING ESTABLISHING COMMUNICATING BETWEEN ALL OF SAID WELLS AND THE OIL-BEARING FORMATION SURROUNDING SAID WELLS, HORIZONTALLY FRACTURING THE FORMATION BETWEEN A FLUIDINJECTION WELL AND AT LEAST ONE ADJACENT OIL-PRODUCTION WELL IN A MANNER SUCH THAT THE WELLS ARE IN FLUID-FLOW COMMUNICATION WITH EACH OTHER THROUGH THE OIL-BEARING FORMATION, INJECTING HOT PREHEAT FLUID DOWN BOTH THE FLUID-INJECTION AND OIL-PRODUCTON WELLS AND THROUGH SAID COMMUNICATING FRACTURE AND INTO SAID OIL-BEATRING FORMATION, MAINTAINING SAID INJECTION OF HOT PREHEAT FLUID INTO BOTH SAID FLUID-INJECTON AND OIL-PRODUCTION WELLS FOR A TIME AND AT A TEMPERATURE SUFFICIENT TO PREHEAT AT LEAST THAT PORTION OF THE OIL-BEARING FORMATION ADJACENT THE COMMUNICATING FRACTURE TO A CONDITION WHERE THE OIL IN SAID FORMATION FLOWS IN RESPONSE TO PRESSURE LESS THAN OVERBURDEN PRESSURE,
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |