US3277440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for recording well logging data on magnetic tape utilizing recorded reference signals for control purposes
Assignee: Services Petroliers Schlumberger SA
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Filing: 1963-09-30
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Granted: 1966-10-04
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Gouilloud Michel Marie Albert
- 👤 Marchand Gilbert Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:01
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/16; G01; G01V; G01V3/00; G01V3/18; G01V3/34; G11B15/00; G11B15/60; G11B15/602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF RECORDING WELL LOGGING DATA ON MAGNETIC TAPE COMPRISING: RECORDING REFERENCE SIGNALS ALONG THE LENGTH OF A MAGNETIC RECORDING TAPE; MOVING EXPLORING MEANS THROUGH THE WELL FOR DEVELOPING DATA SIGNAL REPRESENTATIVE OF SUBSURFACE CONDITIONS; MOVING THE MAGNETIC RECORDING TAPE IN SYNCHRONISM WITH THE MOVEMENT OF THE EXPLORING MEANS THROUGH THE WELL; AND RECORDING SIGNALS REPRESENTATIVE OF THE DATA SIGNALS ALONG THE TAPE AT LOCATIONS DETERMINED BY THE REFERENCE SIGNALS.
Claim 2
Independent Claim
71 words
A METHOD OF RECORDING WELL LOGGING DATA ON MAGNETIC TAPE COMPRISING: RECORDING REFERENCE SIGNALS ALONG THE LENGTH OF A MAGNETIC RECORDING TAPE; MOVING EXPLORING MEANS THROUGH THE WELL FOR DEVELOPING DATA SIGNAL REPRESENTATIVE OF SUBSURFACE CONDITIONS; MOVING THE MAGNETIC RECORDING TAPE IN SYNCHRONISM WITH THE MOVEMENT OF THE EXPLORING MEANS THROUGH THE WELL; AND RECORDING SIGNALS REPRESENTATIVE OF THE DATA SIGNALS ALONG THE TAPE AT LOCATIONS DETERMINED BY THE REFERENCE SIGNALS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |