US3166709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for providing improved vertical resolution in induction well logging including electrical storage and delay means
Assignee: Schlumberger Well Surveying Corp
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Filing: 1959-04-17
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Granted: 1965-01-19
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Expires: 1979-04-17
Abstract
No abstract record available.
Inventors
- 👤 Doll Henri-Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/26; G01V3/28; G01V3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF ELECTROMAGNETICALLY INVESTIGATING EARTH FORMATIONS TRAVERSED BY A BOREHOLE WHICH COMPRISES THE STEPS OF: SUCCESSIVELY POSITIONING A UNITARY ELECTROMAGNETIC EXPLORING MEANS HAVING A GIVEN, FIXED GEOMETRICAL CHARACTERISTIC AT EACH OF A PLURALITY OF DIFFERENT DEPTHS IN A BOREHOLE TO DERIVE A CORRESPONDING PLURALITY OF ELECTRICAL SIGNALS INDIVIDUALLY REPRESENTATIVE OF ELECTRICAL PROPERTIES OF THE ADJACENT EARTH FORMATIONS AS SENSED BY SAID UNITARY EXPLORING MEANS WHEN AT A CORRESPONDING ONE OF THE AFORESAID DEPTHS; COMBINING SAID PLURALITY OF ELECTRICAL SIGNALS INDIVIDUALLY OBTAINED AT DIFFERENT DEPTHS IN THE BOREHOLE IN A PRESCRIBED MANNER TO PROVIDE AN ELECTRICAL OUTPUT SIGNAL; AND OBTAINING INDICATIONS IN RESPONSE TO SAID OUTPUT SIGNAL.
Claim 2
Independent Claim
107 words
A METHOD OF ELECTROMAGNETICALLY INVESTIGATING EARTH FORMATIONS TRAVERSED BY A BOREHOLE WHICH COMPRISES THE STEPS OF: SUCCESSIVELY POSITIONING A UNITARY ELECTROMAGNETIC EXPLORING MEANS HAVING A GIVEN, FIXED GEOMETRICAL CHARACTERISTIC AT EACH OF A PLURALITY OF DIFFERENT DEPTHS IN A BOREHOLE TO DERIVE A CORRESPONDING PLURALITY OF ELECTRICAL SIGNALS INDIVIDUALLY REPRESENTATIVE OF ELECTRICAL PROPERTIES OF THE ADJACENT EARTH FORMATIONS AS SENSED BY SAID UNITARY EXPLORING MEANS WHEN AT A CORRESPONDING ONE OF THE AFORESAID DEPTHS; COMBINING SAID PLURALITY OF ELECTRICAL SIGNALS INDIVIDUALLY OBTAINED AT DIFFERENT DEPTHS IN THE BOREHOLE IN A PRESCRIBED MANNER TO PROVIDE AN ELECTRICAL OUTPUT SIGNAL; AND OBTAINING INDICATIONS IN RESPONSE TO SAID OUTPUT SIGNAL.
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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) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |