Patent US3207256A successfully refreshed from Google Patents.
US3207256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic well logging
Assignee: Schlumberger Well Surveying Corp
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Filing: 1959-09-21
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Granted: 1965-09-21
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Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 Robert B Blizard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:16
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/48; G01V1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN APPARATUS FOR EXPLORING EARTH FORMATIONS TRAVERSED BY A BORE, THE COMBINATION OF AN ACOUSTIC WAVE GENERATOR, A PLURALITY OF ACOUSTIC WAVE DETECTORS, MEANS MOUNTING SAID GENERATOR AND SAID DETECTORS FOR MOVEMENT THROUGH THE BORE IN LONGITUDINALLY SPACED APART RELATION TO EACH OTHER, MEANS RESPONSIVE TO THE OUTPUTS OF SAID GENERATOR AND WAVE DETECTORS FOR PROVIDING SIGNALS REPRESENTING THE TRAVEL TIMES FOR ACOUSTIC WAVE ENERGY FROM SAID GENERATOR TO SAID RESPECTIVE DETECTORS AT EACH OF A PLURALITY OF LEVELS IN SAID BORE, MEANS RESPONSIVE TO SAID SIGNALS FOR PRODUCING UNDELAYED SIGNAWL COMPONENTS CORRESPONDING THERETO AND SIGNAL COMPONENTS CORRESPONDING THERETO THAT ARE DELAYED BY A DIFFERENT AMOUNT FOR EACH GENERATOR-DETECTOR SPACING, AND COMPUTER MEANS JOINTLY RESPONSIVE TO SAID DELAYED AND UNDELAYED SIGNAL COMPONENTS AT EACH OF SAID LEVELS FOR PROVIDING AN AVERAGE TRAVEL TIME MEASUREMENT FOR A GIVEN SECTION OF THE BORE.
Claim 2
Dependent Claim
141 words
IN APPARATUS FOR EXPLORING EARTH FORMATIONS TRAVERSED BY A BORE, THE COMBINATION OF AN ACOUSTIC WAVE GENERATOR, A PLURALITY OF ACOUSTIC WAVE DETECTORS, MEANS MOUNTING SAID GENERATOR AND SAID DETECTORS FOR MOVEMENT THROUGH THE BORE IN LONGITUDINALLY SPACED APART RELATION TO EACH OTHER, MEANS RESPONSIVE TO THE OUTPUTS OF SAID GENERATOR AND WAVE DETECTORS FOR PROVIDING SIGNALS REPRESENTING THE TRAVEL TIMES FOR ACOUSTIC WAVE ENERGY FROM SAID GENERATOR TO SAID RESPECTIVE DETECTORS AT EACH OF A PLURALITY OF LEVELS IN SAID BORE, MEANS RESPONSIVE TO SAID SIGNALS FOR PRODUCING UNDELAYED SIGNAWL COMPONENTS CORRESPONDING THERETO AND SIGNAL COMPONENTS CORRESPONDING THERETO THAT ARE DELAYED BY A DIFFERENT AMOUNT FOR EACH GENERATOR-DETECTOR SPACING, AND COMPUTER MEANS JOINTLY RESPONSIVE TO SAID DELAYED AND UNDELAYED SIGNAL COMPONENTS AT EACH OF SAID LEVELS FOR PROVIDING AN AVERAGE TRAVEL TIME MEASUREMENT FOR A GIVEN SECTION OF THE BORE.
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |