Patent US2626778A successfully refreshed from Google Patents.
US2626778A
Expired / Lapsed
US
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Method and means for excluding water penetration into well bores
Assignee: Individual
•
Filing: 1948-05-15
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Granted: 1953-01-27
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Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
- 👤 John R Lockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:07
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/134
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
THE METHOD OF SEALING WELL BORES UNDERGOING DRILLING AGAINST UNDESIRED WATER ENTRY, WHICH COMPRISES: DEPOSITING ON THE BOTTOM OF A WELL BORE, WHEN A WATER-BEARING FORMATION IS PENETRATED, A SOLIDIFIABLE BODY OF PLASTIC COMPOSITION; ALSO, POSITIONING IN THE WELL BORE FOR DEPOSIT ON THE BOTTOM THEREOF A TUBULAR VERTICALLY POSITIONED LINER ASSEMBLY HAVING AN INTERMEDIATELY DISPOSED EXPANSIBLE PACKED SECTION; EXPANDING THE PACKER SECTION TO CAUSE THE SAME TO ENGAGE DIRECTLY ADJOINING WALL SURFACES OF THE WELL BORE ABOVE SAID WATER-BEARING FORMATION; PRODUCING IN SAID AROUND THE UPPER PART OF SAID LINEAR ASSEMBLY ON AND ABOVE SAID PACKER SECTION A SECOND SOLIFIABLE BODY OF PLASTIC COMPOSITION; THEREAFTER REMOVING THE SOLIDIFED PORTIONS OF SAID BODIES ORIGINALLY POSITIONED IN SAID LINER
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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) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |