US2689008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cementing wells
Assignee: Standard Oil Development Co
•
Filing: 1951-06-15
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Granted: 1954-09-14
•
Expires: 1971-06-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas O Allen
- 👤 Jr John C Mcduffie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:37
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METHOD OF CEMENTING A WELL HAVING A PERFORATED CASING THEREIN WHICH COMPRISES LOCATING A BODY OF HYDRAULIC CEMENTITIOUS MATERIAL IN SAID PERFORATED CASING IN THE REGION OF, AND ADJACENT SAID PERFORATIONS, LOCATING A HIGH EXPLOSIVE DETONATING CHARGE IN THE BODY OF CEMENTITIOUS MA-
Claim 2
Independent Claim
44 words
A METHOD OF CEMENTING A WELL HAVING A PERFORATED CASING THEREIN WHICH COMPRISES LOCATING A BODY OF HYDRAULIC CEMENTITIOUS MATERIAL IN SAID PERFORATED CASING IN THE REGION OF, AND ADJACENT SAID PERFORATIONS, LOCATING A HIGH EXPLOSIVE DETONATING CHARGE IN THE BODY OF CEMENTITIOUS MA-
References Cited (Backward Citations)
GB191128030A
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Cited
US1588643A
Cited
US1843002A
Cited
US1856912A
Cited
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Cited
US2494256A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |