US2751009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of working over wells
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-05-21
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Granted: 1956-06-19
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Lemuel D Wooddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:07
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD FOR WORKING OVER A CASED AND TUBED WELL PENETRATING A PLURALITY OF HYDROCARBON PRODUCTIVE STRATA WITHOUT REMOVING THE TUBING FROM THE WELL WHICH COMPRISES PERFORATING THE CASING AND OBTAINING PRODUCTION FROM A HYDROCARBON PRODUCTIVE STRATUM UNTIL SAID PRODUCTION BECOMES NON-COMMERCIAL, INTRODUCING A FLUID, LOW WATER-LOSS CEMENT THROUGH SAID TUBING INTO SAID CASING ADJACENT THE PERFORATIONS TO SEAL SAID PERFORATIONS, MOVING SAID TUBING LONGITUDINALLY IN SAID WELL TO PROVIDE A PASSAGE BETWEEN THE TUBING AND CASING, REMOVING EXCESS FLUID CEMENT FROM SAID CASING, MOVING SAID TUBING LONGITUDINALLY IN SAID WELL TO CLOSE SAID PASSAGE, LOWERING A PERFORATOR THROUGH SAID TUBING TO A LEVEL VERTICAL DISPLACED FROM THE ORIGINAL PERFORATIONS IN SAID CASING ADJACENT A HYDROCARBON PRODUCTIVE STRATUM, PERFORATING THE CASING AT SAID VERTICALLY DISPLACED LEVEL, AND OBTAINING PRODUCTION FROM SAID STRATUM ADJACENT SAID VERTICALLY DISPLACED LEVEL.
Claim 2
Independent Claim
137 words
A METHOD FOR WORKING OVER A CASED AND TUBED WELL PENETRATING A PLURALITY OF HYDROCARBON PRODUCTIVE STRATA WITHOUT REMOVING THE TUBING FROM THE WELL WHICH COMPRISES PERFORATING THE CASING AND OBTAINING PRODUCTION FROM A HYDROCARBON PRODUCTIVE STRATUM UNTIL SAID PRODUCTION BECOMES NON-COMMERCIAL, INTRODUCING A FLUID, LOW WATER-LOSS CEMENT THROUGH SAID TUBING INTO SAID CASING ADJACENT THE PERFORATIONS TO SEAL SAID PERFORATIONS, MOVING SAID TUBING LONGITUDINALLY IN SAID WELL TO PROVIDE A PASSAGE BETWEEN THE TUBING AND CASING, REMOVING EXCESS FLUID CEMENT FROM SAID CASING, MOVING SAID TUBING LONGITUDINALLY IN SAID WELL TO CLOSE SAID PASSAGE, LOWERING A PERFORATOR THROUGH SAID TUBING TO A LEVEL VERTICAL DISPLACED FROM THE ORIGINAL PERFORATIONS IN SAID CASING ADJACENT A HYDROCARBON PRODUCTIVE STRATUM, PERFORATING THE CASING AT SAID VERTICALLY DISPLACED LEVEL, AND OBTAINING PRODUCTION FROM SAID STRATUM ADJACENT SAID VERTICALLY DISPLACED LEVEL.
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) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |