US3204708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for submarine well drilling, using a flexible tubing as drill string
Assignee: IFP Energies nouvelles
•
Filing: 1963-07-18
•
Granted: 1965-09-07
•
Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Berne Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:28
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/01; E21B19/00; E21B19/08; E21B19/09; E21B19/22; E21B7/00; E21B7/12; Y; Y10; Y10S; Y10S254/00; Y10S254/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD FOR SUBMARINE WELL DRILLING, COMPRISING THE STEP OF SUSPENDING A MOTOR AND A BIT DRIVEN THEREBY FROM THE LOWER END OF A FLEXIBLE TUBING HAVING AN UPPER END AT FLOATING SURFACE EQUIPMENT, DRIVING IN THE SUBMARINE SOIL SAID DRILL BIT ACTUATED BY SAID MOTOR, APPLYING TWO TRACTION STRAINS SEPARATELY TO TWO PORTIONS OF SAID TUBING-ONE OF THE SAID STRAINS, WHICH IS APPLIED TO THE UPPER END OF A LOWER PORTION OF INVARIABLE LENGTH OF THE STANTIALLY CONSTANT, AND THE OTHER STRAIN, APPLIED TO AN UPPER PORTION OF VARIABLE LENGTH OF THE TUBING, FROM A SURFACE EQUIPMENT, BALANCES THE WEIGHT OF SAID UPPER PORTION.
Claim 2
Independent Claim
105 words
A METHOD FOR SUBMARINE WELL DRILLING, COMPRISING THE STEP OF SUSPENDING A MOTOR AND A BIT DRIVEN THEREBY FROM THE LOWER END OF A FLEXIBLE TUBING HAVING AN UPPER END AT FLOATING SURFACE EQUIPMENT, DRIVING IN THE SUBMARINE SOIL SAID DRILL BIT ACTUATED BY SAID MOTOR, APPLYING TWO TRACTION STRAINS SEPARATELY TO TWO PORTIONS OF SAID TUBING-ONE OF THE SAID STRAINS, WHICH IS APPLIED TO THE UPPER END OF A LOWER PORTION OF INVARIABLE LENGTH OF THE STANTIALLY CONSTANT, AND THE OTHER STRAIN, APPLIED TO AN UPPER PORTION OF VARIABLE LENGTH OF THE TUBING, FROM A SURFACE EQUIPMENT, BALANCES THE WEIGHT OF SAID UPPER PORTION.
References Cited (Backward Citations)
US1785559A
Cited
US1944838A
Cited
US1959174A
Cited
US2512783A
Cited
US2676787A
Cited
US2783027A
Cited
US2906502A
Cited
US3017934A
Cited
US2945677A
Cited
US3015360A
Cited
US3078931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |