US2711482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for radioactivity well logging
Assignee: Schlumberger Well Surveying Corp
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Filing: 1951-09-24
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Granted: 1955-06-21
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Expires: 1971-09-24
Abstract
No abstract record available.
Inventors
- 👤 Goodman Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:23
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
RADIOACTIVITY WELL LOGGING APPARATUS COMPRISING A SCINTILLATION ELEMENT ADAPTED TO BE DIRECTLY EXPOSED TO THE PRESSURE OF LIQUID IN A BOREHOLE, MEANS FOR CONVERTING LIGHT EMITTED FROM THE SCINTILLATION MATERIAL IN RESPONSE TO RADIOACTIVE RADIATION INTO ELECTRICAL SIGNALS, AND MEANS FOR TRANSMITTING THE ELECTRICAL SIGNALS OUT OF THE BOREHOLE.
Claim 2
Dependent Claim
49 words
RADIOACTIVITY WELL LOGGING APPARATUS COMPRISING A SCINTILLATION ELEMENT ADAPTED TO BE DIRECTLY EXPOSED TO THE PRESSURE OF LIQUID IN A BOREHOLE, MEANS FOR CONVERTING LIGHT EMITTED FROM THE SCINTILLATION MATERIAL IN RESPONSE TO RADIOACTIVE RADIATION INTO ELECTRICAL SIGNALS, AND MEANS FOR TRANSMITTING THE ELECTRICAL SIGNALS OUT OF THE BOREHOLE.
References Cited (Backward Citations)
US2133776A
Cited
US2384840A
Cited
US2351028A
Cited
US2339129A
Cited
US2469461A
Cited
US2588210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |