Patent US3292702A successfully refreshed from Google Patents.
US3292702A
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Thermal well stimulation method
Assignee: ExxonMobil Upstream Research Co
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Filing: 1966-06-07
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Granted: 1966-12-20
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Expires: 1986-06-07
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Boberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:26
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A PROCESS FOR THERMAL STIMULATION OF A WELL WHICH IS PRODUCING OIL FROM AN OIL-BEARING FORMATION DUE TO AN EXISTING PRESSURE DRIVE MECHANISM WHICH COMPRISES INTERRUPTING SAID PRODUCTION, THEN INJECTING STEAM INTO THE OIL-PRODUCING FORMATION PENETRATED BY SAID WELL, THEREAFTER BACKFLOWING AND PRODUCING STEAM CONDENSATE FROM SAID WELL WHILE MAINTAINING SUFFICIENT BACK-PRESSURE ON THE WELL TO PREVENT SUBSTANTIAL RE-VAPORIZATION OF SAID CONDENSATE, THEN RESUMING PRODUCTION OF OIL FROM SAID WELL FOR A PERIOD OF AT LEAST ONE MONTH, GRADUALLY REDUCING SAID BACK PRESSURE AND THEN REPEATING THE ABOVE SEQUENCE OF STEPS.
References Cited (Backward Citations)
US511768A
Cited
US3126961A
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US3155160A
Cited
US3139928A
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US3180414A
Cited
US3136359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |