Patent US2588210A successfully refreshed from Google Patents.
US2588210A
Expired / Lapsed
US
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Method of locating leaks in well bores
Assignee: Gulf Research and Development Co
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Filing: 1949-11-18
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Granted: 1952-03-04
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Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
- 👤 Orvil W Crisman
- 👤 Abraham J Teplitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/11; E21B47/111
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF LOCATING LEAKS IN A WELL BORE WHICH COMPRISES INTRODUCING INTO THE WELL BORE A COMPOSITION COMPRISING A DRILLING FLUID AND A TRACEABLE SEALING MATERIAL WHICH COMPRISES FRAGMENTS OF FLEXIBLE, DEFORMABLE MATERIAL INSOLUBLE IN THE DRILLING FLUID AND HAVING A STRUCTURE RANGING FROM FIBROUS TO LAMELLAR, SAID FRAGMENTS HAVING INCORPORATED THEREWITH A RADIOACTIVE MATERIAL INSOLUBLE IN THE DRILLING FLUID, AND THEN LOCATING THE DEPTH OF THE RADIOACTIVE SEALING MATERIAL BY SURVEYING THE WELL FOR RADIOACTIVITY.
Claim 2
Independent Claim
77 words
THE METHOD OF LOCATING LEAKS IN A WELL BORE WHICH COMPRISES INTRODUCING INTO THE WELL BORE A COMPOSITION COMPRISING A DRILLING FLUID AND A TRACEABLE SEALING MATERIAL WHICH COMPRISES FRAGMENTS OF FLEXIBLE, DEFORMABLE MATERIAL INSOLUBLE IN THE DRILLING FLUID AND HAVING A STRUCTURE RANGING FROM FIBROUS TO LAMELLAR, SAID FRAGMENTS HAVING INCORPORATED THEREWITH A RADIOACTIVE MATERIAL INSOLUBLE IN THE DRILLING FLUID, AND THEN LOCATING THE DEPTH OF THE RADIOACTIVE SEALING MATERIAL BY SURVEYING THE WELL FOR RADIOACTIVITY.
References Cited (Backward Citations)
US2220205A
Cited
US2231577A
Cited
US2353372A
Cited
US2358945A
Cited
US2339129A
Cited
US2346043A
Cited
US2451472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |