US3564914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequential acoustic and electrical resistivity well-logging device
Assignee: Sinclair Research Inc
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Filing: 1968-08-12
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Granted: 1971-02-23
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Expires: 1988-08-12
Abstract
Abstract D R A W I N G WELL-LOGGING APPARATUS AND METHOD UTILIZING A TOOL INCLUDING A PLURALITY OF HOUSINGS, EACH HAVING ACOUSTIC TRANSMITTING MEANS, ACOUSTIC RECEIVING MEANS, ELECTRICAL TRANSMITTING ELECTRODE MEANS, AND ELECTRICAL RECEIVING ELECTRODE MEANS. THE TOOL IS LOWERED INTO A BOREHOLE, AND THE HOUSINGS CONTACT THE BOREHOLE WALL. THE ACOUSTIC AND ELECTRICAL TRANSMITTING MEANS ARE SEQUENTIALLY ENERGIZED, AND THE SIGNALS FROM THE ACOUSTIC AND ELECTRICAL RECEIVING MEANS ARE MONITORED.
Inventors
- 👤 Kantilal P Desai
- 👤 Edward J Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:04
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52; G01V11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |