US3278748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quasi-stationary well logging method and apparatus
Assignee: Chevron USA Inc
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Filing: 1963-08-08
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Granted: 1966-10-11
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Expires: 1983-08-08
Abstract
No abstract record available.
Inventors
- 👤 Norman J Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:03
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF RECORDING A STATISTICALLY RELIABLE NUMBER OF RADIATION EVENTS FROM A PLURALITY OF GIVEN INTERVALS OF EARTH FORMATION CUT BY A BOREHOLE WHILE CONTINUOUSLY TRAVERSING SAID INTERVALS WITH A LOGGING SONDE WHICH COMPRISES: (A) POSITIONING A PLURALITY OF RADIATION DETECTORS WITH KNOWN RELATIVE DISPLACEMENTS IN THE AXIAL DIRECTION ALONG SAID SONDE, (B) INITIALLY CONNECTING INDIVIDUAL MEMBERS OF A PLURALITY OF ELECTRICAL PULSE STORAGE UNITS TO INDIVIDUAL MEMBERS OF SAID PLURALITY OF RADIATION DETECTORS SO THAT EACH OF SAID STORAGE UNITS RECEIVES SIGNALS RELATABLE TO A GIVEN FORMATION INTERVAL, AND (C) SWITCHING THE CONNECTIONS BETWEEN SAID INDIVIDUAL STORAGE UNITS AND SAID INDIVIDUAL RADIATION DETECTORS, IN ACCORDANCE WITH THE MOVEMENT OF SAID SONDE, SO THAT A GIVEN INDIVIDUAL STORAGE UNIT IS SWITCHED FROM A FIRST INDIVIDUAL DETECTOR TO WHICH IT WAS INITIALLY CONNECTED TO THAT INDIVIDUAL DETECTOR WHICH HAS REPLACED SAID FIRST INDIVIDUAL DETECTOR OPPOSITE SAID FORMATION INTERVAL FROM WHICH SAID GIVEN INDIVIDUAL STORAGE UNIT INITIALLY RECEIVED SIGNALS.
Claim 2
Independent Claim
158 words
A METHOD OF RECORDING A STATISTICALLY RELIABLE NUMBER OF RADIATION EVENTS FROM A PLURALITY OF GIVEN INTERVALS OF EARTH FORMATION CUT BY A BOREHOLE WHILE CONTINUOUSLY TRAVERSING SAID INTERVALS WITH A LOGGING SONDE WHICH COMPRISES: (A) POSITIONING A PLURALITY OF RADIATION DETECTORS WITH KNOWN RELATIVE DISPLACEMENTS IN THE AXIAL DIRECTION ALONG SAID SONDE, (B) INITIALLY CONNECTING INDIVIDUAL MEMBERS OF A PLURALITY OF ELECTRICAL PULSE STORAGE UNITS TO INDIVIDUAL MEMBERS OF SAID PLURALITY OF RADIATION DETECTORS SO THAT EACH OF SAID STORAGE UNITS RECEIVES SIGNALS RELATABLE TO A GIVEN FORMATION INTERVAL, AND (C) SWITCHING THE CONNECTIONS BETWEEN SAID INDIVIDUAL STORAGE UNITS AND SAID INDIVIDUAL RADIATION DETECTORS, IN ACCORDANCE WITH THE MOVEMENT OF SAID SONDE, SO THAT A GIVEN INDIVIDUAL STORAGE UNIT IS SWITCHED FROM A FIRST INDIVIDUAL DETECTOR TO WHICH IT WAS INITIALLY CONNECTED TO THAT INDIVIDUAL DETECTOR WHICH HAS REPLACED SAID FIRST INDIVIDUAL DETECTOR OPPOSITE SAID FORMATION INTERVAL FROM WHICH SAID GIVEN INDIVIDUAL STORAGE UNIT INITIALLY RECEIVED SIGNALS.
References Cited (Backward Citations)
US2284345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |