Patent US3126960A successfully refreshed from Google Patents.
US3126960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the completion of a well bore
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:36
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN THE METHOD OF REDUCING THE CHANCE OF A WELL BORE EXPLOSION DURING THE RECOVERY OF HYDROCARBONS FROM AN UNDERGROUND HYDROCARBON BEARING FORMATION VIA A WELL BORE PENETRATING INTO SAID FORMATION, THE STEPS OF SETTING IMPERFORATE CASING IN SAID WELL BORE AND A STRING OF FLOW TUBING WITHIN SAID CASING, PROVIDING A FLUID-TIGHT SEAL BETWEEN SAID IMPERFORATE CASING AND SAID STRING OF FLOW TUBING AT A SUBSTANTIAL DISTANCE DOWN SAID WELL BORE AND UPWARD OF SAID FORMTION, APPLYING PRESSURE TO THE UPPER SURFACE OF SAID SEAL AND MAINTAINING SUCH PRESSURE AT SUBSTANTIALLY CONSTANT VALUE BY INJECTING A NON-COMBUSTIBLE FLUID INTO THE ANNULUS DEFINED BY SAID FLOW TUBING AND SAID IMPERFORATE CASING ABOVE SAID SEAL, AND INJECTING A COMBUSTION SUPPORTING GAS INTO SAID FORMATION THROUGH SAID TUBING.
Claim 2
Dependent Claim
126 words
IN THE METHOD OF REDUCING THE CHANCE OF A WELL BORE EXPLOSION DURING THE RECOVERY OF HYDROCARBONS FROM AN UNDERGROUND HYDROCARBON BEARING FORMATION VIA A WELL BORE PENETRATING INTO SAID FORMATION, THE STEPS OF SETTING IMPERFORATE CASING IN SAID WELL BORE AND A STRING OF FLOW TUBING WITHIN SAID CASING, PROVIDING A FLUID-TIGHT SEAL BETWEEN SAID IMPERFORATE CASING AND SAID STRING OF FLOW TUBING AT A SUBSTANTIAL DISTANCE DOWN SAID WELL BORE AND UPWARD OF SAID FORMTION, APPLYING PRESSURE TO THE UPPER SURFACE OF SAID SEAL AND MAINTAINING SUCH PRESSURE AT SUBSTANTIALLY CONSTANT VALUE BY INJECTING A NON-COMBUSTIBLE FLUID INTO THE ANNULUS DEFINED BY SAID FLOW TUBING AND SAID IMPERFORATE CASING ABOVE SAID SEAL, AND INJECTING A COMBUSTION SUPPORTING GAS INTO SAID FORMATION THROUGH SAID TUBING.
References Cited (Backward Citations)
US2913050A
Cited
US2844205A
Cited
US2801090A
Cited
US3004594A
Cited
US2994375A
Cited
US3023807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |