US2800185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for sealing a borehole wall
Assignee: Gulf Research and Development Co
•
Filing: 1954-12-30
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Granted: 1957-07-23
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Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 Abraham J Teplitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/136; E21B33/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF ESALING A FORMATION CAUSING LOSS OF CIRCULATION PENTRATED BY THE BOREHOLE OF A WELL COMPRISING PUMPING A CHARGE OF TIME-SETTING MATERIAL DOWN THE WALL AND INTO THE FORMATION CAUSING LOSS OF CIRCULATION, THEREAFTER POSITIONING A FLEXIBLE DIAPHRAGM IN THE WALL AGAISNT THE FACE OF THE FORMATION CAUSING LOSS OF CIRCULATION, AND MAINTAINING PRESSURE ON THE WALL TO HOLD THE FLEXIBLE DIAPHRAGM AGAINST THE FORMATION CAUSING LOSS OF CIRCULA-
Claim 2
Independent Claim
71 words
A METHOD OF ESALING A FORMATION CAUSING LOSS OF CIRCULATION PENTRATED BY THE BOREHOLE OF A WELL COMPRISING PUMPING A CHARGE OF TIME-SETTING MATERIAL DOWN THE WALL AND INTO THE FORMATION CAUSING LOSS OF CIRCULATION, THEREAFTER POSITIONING A FLEXIBLE DIAPHRAGM IN THE WALL AGAISNT THE FACE OF THE FORMATION CAUSING LOSS OF CIRCULATION, AND MAINTAINING PRESSURE ON THE WALL TO HOLD THE FLEXIBLE DIAPHRAGM AGAINST THE FORMATION CAUSING LOSS OF CIRCULA-
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |