US3089954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging apparatus
Assignee: Schlumberger Well Surveying Corp
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Filing: 1956-06-20
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Granted: 1963-05-14
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Expires: 1976-06-20
Abstract
No abstract record available.
Inventors
- 👤 Frank F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:03
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
WELL LOGGING APPARATUS COMPRISING A HOUSING ADAPTED TO BE PASSED THROUGH A BOREHOLE AND HAVING AN ELONGATED TUBULAR CONFIGURATION DEFINING A LONGITUDINAL AXIS, FIRST, SECOND AND THIRD SCINTILLATION ELEMENTS OF CYLINDRICAL FORM SUPPORTED WITHIN THE BORE OF SAID HOUSING IN UNEQUALLY SPACED ALIGNMENT ALONG SAID AIXS, FIRST, SECOND AND THIRD PHOTOMULTIPLIERS OF CYLINDRICAL FORM SUPPORTED WITHIN THE BORE OF SAID HOUSING IN SPACED ALIGNMENT WITH SAID AXIS, SAID FIRST AND SECOND ELEMENTS HAVING ADJACENT CONFRONTING END FACES WHICH ARE LIGHT SHIELDED AND HAVING REMOTE END FACES TO WHICH THE RESPECTIVE FIRST AND SECOND PHOTOMULTIPLIERS ARE OPTICALLY COUPLED, SAID THIRD ELEMENT HAVING AN END FACE CONFRONTING SAID FIRST PHOTOMULTIPLIER AND SPACED THEREBY FROM SAID FIRST ELEMENT AND HAVING A REMOTE END FACE TO WHICH SAID THIRD PHOTOMULTIPLIER IS OPTICALLY COUPLED, SAID FIRST SCINTILLATION ELEMENT BEING EXPOSED TO RADIANT ENERGY TRANSMITTED THROUGH THE WALL OF SAID HOUSING AND SAID SECOND AND SAID THIRD SCINTILLATION ELEMENTS BEING EXPOSED TO RADIANT ENERGY EMITTED BY SAID FIRST SCINTILLATION ELEMENT, AND MEANS ELECTRICALLY COUPLED WITH EACH OF SAID PHOTOMULTIPLIERS FOR SELECTIVELY DERIVING PAIR-PRODUCTION PULSES FROM SAID FIRST PHOTOMULTIPLIER.
Claim 2
Dependent Claim
182 words
WELL LOGGING APPARATUS COMPRISING A HOUSING ADAPTED TO BE PASSED THROUGH A BOREHOLE AND HAVING AN ELONGATED TUBULAR CONFIGURATION DEFINING A LONGITUDINAL AXIS, FIRST, SECOND AND THIRD SCINTILLATION ELEMENTS OF CYLINDRICAL FORM SUPPORTED WITHIN THE BORE OF SAID HOUSING IN UNEQUALLY SPACED ALIGNMENT ALONG SAID AIXS, FIRST, SECOND AND THIRD PHOTOMULTIPLIERS OF CYLINDRICAL FORM SUPPORTED WITHIN THE BORE OF SAID HOUSING IN SPACED ALIGNMENT WITH SAID AXIS, SAID FIRST AND SECOND ELEMENTS HAVING ADJACENT CONFRONTING END FACES WHICH ARE LIGHT SHIELDED AND HAVING REMOTE END FACES TO WHICH THE RESPECTIVE FIRST AND SECOND PHOTOMULTIPLIERS ARE OPTICALLY COUPLED, SAID THIRD ELEMENT HAVING AN END FACE CONFRONTING SAID FIRST PHOTOMULTIPLIER AND SPACED THEREBY FROM SAID FIRST ELEMENT AND HAVING A REMOTE END FACE TO WHICH SAID THIRD PHOTOMULTIPLIER IS OPTICALLY COUPLED, SAID FIRST SCINTILLATION ELEMENT BEING EXPOSED TO RADIANT ENERGY TRANSMITTED THROUGH THE WALL OF SAID HOUSING AND SAID SECOND AND SAID THIRD SCINTILLATION ELEMENTS BEING EXPOSED TO RADIANT ENERGY EMITTED BY SAID FIRST SCINTILLATION ELEMENT, AND MEANS ELECTRICALLY COUPLED WITH EACH OF SAID PHOTOMULTIPLIERS FOR SELECTIVELY DERIVING PAIR-PRODUCTION PULSES FROM SAID FIRST PHOTOMULTIPLIER.
References Cited (Backward Citations)
US2830185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |