US3240271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cleaning a formation in the vicinity of a well bore
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1960-08-15
•
Granted: 1966-03-15
•
Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 Gerald D Ortloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:43
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/164; Y; Y02; Y02P; Y02P90/00; Y02P90/70
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
AN IMPROVED METHOD FOR INCREASING THE INJECTIVITY OF AN INJECTION WELL DRILLED INTO A SUBTERRANEAN FORMATION WHICH COMPRISES THE STEPS OF: INJECTING A TREATING AGENT CONSISTING ESSENTIALLY OF CARBON DIOXIDE INTO AN INJECTION WELL AT A PRESSURE IN EXCESS OF THE FORMATION PRESSURE IN A QUANTITY SUFFICIENT TO PENETRATE SEVERAL FEET INTO THE FORMATION; SEALING OFF THE INJECTION WELL FOR A PERIOD OF TIME; RELEASING THE PRESSURE IN SAID INJECTION WELL AT THE END OF SAID PERIOD OF TIME; AND REMOVING SAID FLUID FROM SAID INJECTION WELL.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |