US3077227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cementing well casing
Assignee: Shell USA Inc
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Filing: 1960-05-09
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Granted: 1963-02-12
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Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 John A Haeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:50
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14; E21B33/143; E21B7/00; E21B7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD OF CEMENTING A STRING OF CASING IN AN OFFSHORE WELL DRILLED BY EQUIPMENT ON A STRUCTURE POSITIONED ON A STRUCTURE ABOVE THE SURFACE OF A BODY OF WATER AND EXTENDING TO THE FORMATION BELOW, SAID METHOD COMPRISING THE STEPS OF POSITIONING AT LEAST A PORTION OF A DRILL STRING WITH AT LEAST A PORTION THEREOF IN A DRILLED HOLE OF AN OFFSHORE WELL SO THAT THE DRILL STRING EXTENDS FROM A POINT WITHIN THE WELL TO A POINT ABOVE THE SURFACE OF THE WATER TO SERVE AS A GUIDE FOR A CASING, RUNNING A WELL CASING DOWN OVER THE DRILL STRING SO THAT THE CASING EXTENDS FROM A POINT ABOVE THE SURFACE OF THE WATER DOWN INTO AT LEAST THE PROPORTION OF THE WELL, SUSPENDING THE CASING FROM ITS UPPER END IN SAID POSITION IN A STATIONARY MANNER, WITHDRAWING THE DRILL STRING FROM SAID CASING, RUNNING A CEMENT RETAINER TO A FIXED POSITION IN THE CASING NEAR THE BOTTOM THEREOF WHILE PROVIDING A FLOW PASSAGE-
Claim 2
Independent Claim
167 words
A METHOD OF CEMENTING A STRING OF CASING IN AN OFFSHORE WELL DRILLED BY EQUIPMENT ON A STRUCTURE POSITIONED ON A STRUCTURE ABOVE THE SURFACE OF A BODY OF WATER AND EXTENDING TO THE FORMATION BELOW, SAID METHOD COMPRISING THE STEPS OF POSITIONING AT LEAST A PORTION OF A DRILL STRING WITH AT LEAST A PORTION THEREOF IN A DRILLED HOLE OF AN OFFSHORE WELL SO THAT THE DRILL STRING EXTENDS FROM A POINT WITHIN THE WELL TO A POINT ABOVE THE SURFACE OF THE WATER TO SERVE AS A GUIDE FOR A CASING, RUNNING A WELL CASING DOWN OVER THE DRILL STRING SO THAT THE CASING EXTENDS FROM A POINT ABOVE THE SURFACE OF THE WATER DOWN INTO AT LEAST THE PROPORTION OF THE WELL, SUSPENDING THE CASING FROM ITS UPPER END IN SAID POSITION IN A STATIONARY MANNER, WITHDRAWING THE DRILL STRING FROM SAID CASING, RUNNING A CEMENT RETAINER TO A FIXED POSITION IN THE CASING NEAR THE BOTTOM THEREOF WHILE PROVIDING A FLOW PASSAGE-
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |