US3148729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of combatting the obstruction of gas circulation in gas drilling
Assignee: Sinclair Research Inc
•
Filing: 1959-07-01
•
Granted: 1964-09-15
•
Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Don R Holbert
- 👤 Robert O Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:15
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/882; E; E21; E21B; E21B21/00; E21B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A METHOD FOR COMBATTING THE OBSTRUCTION OF GAS CIRCULATION IN DRILLING WELLS EMPLOYING GAS AS THE CIRCULATION MEDIUM THROUGH A DRILL PIPE TUBING WITH A LOWER OPENING, WHEREIN THE OBSTRUCTION RESULTS FROM THE INGRESS OF EXTRANEOUS MATERIALS INTO THE WELL BORE FROM A SUBTERRANEAN FORMATION, THE STEPS COMPRISING INTRODUCING WEIGHTED RESINFORMING MATERIAL INTO THE TUBING EXTENDING DOWNWARDLY IN THE WELL BORE BELOW THE UPPER LEVEL OF THE FORMATION OF INGRESS, CONDUCTING A PORTION OF THE RESIN-FORMING MATERIAL THROUGH THE TUBING TO FORM AN ANNULAR COLUMN OF RESIN-FORMING MATERIAL COVERING THE FORMATION OF INGRESS IN THE ANNULAR SPACE PROVIDED BETWEEN THE TUBING AND THE PORTION OF THE FORMATION OF INGRESS EXPOSED IN THE WELL BORE, TRACKING THE UPPER LEVEL OF THE ANNULAR COLUMN OF
Claim 2
Independent Claim
123 words
A METHOD FOR COMBATTING THE OBSTRUCTION OF GAS CIRCULATION IN DRILLING WELLS EMPLOYING GAS AS THE CIRCULATION MEDIUM THROUGH A DRILL PIPE TUBING WITH A LOWER OPENING, WHEREIN THE OBSTRUCTION RESULTS FROM THE INGRESS OF EXTRANEOUS MATERIALS INTO THE WELL BORE FROM A SUBTERRANEAN FORMATION, THE STEPS COMPRISING INTRODUCING WEIGHTED RESINFORMING MATERIAL INTO THE TUBING EXTENDING DOWNWARDLY IN THE WELL BORE BELOW THE UPPER LEVEL OF THE FORMATION OF INGRESS, CONDUCTING A PORTION OF THE RESIN-FORMING MATERIAL THROUGH THE TUBING TO FORM AN ANNULAR COLUMN OF RESIN-FORMING MATERIAL COVERING THE FORMATION OF INGRESS IN THE ANNULAR SPACE PROVIDED BETWEEN THE TUBING AND THE PORTION OF THE FORMATION OF INGRESS EXPOSED IN THE WELL BORE, TRACKING THE UPPER LEVEL OF THE ANNULAR COLUMN OF
References Cited (Backward Citations)
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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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |