US3286778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for minimizing the occurrence of fires during well drilling operations
Assignee: WELL COMPLETIONS Inc
•
Filing: 1962-07-13
•
Granted: 1966-11-22
•
Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jackson John Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:42
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/16; E21B21/14; E21B35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE METHOD OF MINIMIZING THE OCCURRENCE OF FIRE DURING DRILLING OF WELLS WHEREIN AIR IS USED AS THE CIRCULATING FLUID, WHICH METHOD COMPRISES: INTRODUCING INTO THE CIRCULATING AIR MATERIALS WHICH REACT TO FORM A SUFFICIENT AMOUNT OF AN INERT GAS TO REDUCE THE OXYGEN CONTENT OF THE AIR BELOW THAT WHICH WILL SUPPORT COMBUSTION.
Claim 2
Independent Claim
54 words
THE METHOD OF MINIMIZING THE OCCURRENCE OF FIRE DURING DRILLING OF WELLS WHEREIN AIR IS USED AS THE CIRCULATING FLUID, WHICH METHOD COMPRISES: INTRODUCING INTO THE CIRCULATING AIR MATERIALS WHICH REACT TO FORM A SUFFICIENT AMOUNT OF AN INERT GAS TO REDUCE THE OXYGEN CONTENT OF THE AIR BELOW THAT WHICH WILL SUPPORT COMBUSTION.
References Cited (Backward Citations)
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Cited
US866437A
Cited
US2738163A
Cited
GB740289A
Cited
GB812146A
Cited
US2858895A
Cited
US2999551A
Cited
US3017348A
Cited
US2969116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |