US3406776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic method and apparatus for examining formations adjacent the walls of boreholes
Assignee: Services Petroliers Schlumberger SA
•
Filing: 1965-03-23
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Granted: 1968-10-22
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Expires: 1985-03-23
Abstract
No abstract record available.
Inventors
- 👤 Henry Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30; F16N7/32; F16N7/34; B; B23; B23Q; B23Q11/00; B23Q11/10; G; G01; G01S; G01S7/00; G01S7/52; G01S7/52017; G01S7/52023; G01S7/52036; G01S7/539; G01V; G01V1/00; G01V1/24; G01V1/245; G01V1/40; G01V1/44; G01V1/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF EXAMINING A FORMATION THROUGH WHICH A BOREHOLE EXTENDS, COMPRISING THE STEPS OF TRANSMITTING FROM A FIRST ELECTROACOUSTICAL TRANSDUCER A BEAM OF ULTRASONIC ACOUSTIC ENERGY FROM THE BOREHOLE INTO THE FORMATION SO THAT SUBSTANTIALLY ALL OF THE ACOUSTIC ENERGY IN THE FORMATION IS PROPAGATED AS SHEAR WAVES AND SO THAT COMPRESSION WAVES ARE SUBSTANTIALLY TOTALLY REFLECTED FROM THE BOREHOLE WALL, ABSORBING THE ACOUSTIC ENERGY TRANSMITTED OUTSIDE OF THE BEAM AND THE COMPRESSION WAVES REFLECTED FROM THE BOREHOLE WALL,
Claim 2
Independent Claim
80 words
A METHOD OF EXAMINING A FORMATION THROUGH WHICH A BOREHOLE EXTENDS, COMPRISING THE STEPS OF TRANSMITTING FROM A FIRST ELECTROACOUSTICAL TRANSDUCER A BEAM OF ULTRASONIC ACOUSTIC ENERGY FROM THE BOREHOLE INTO THE FORMATION SO THAT SUBSTANTIALLY ALL OF THE ACOUSTIC ENERGY IN THE FORMATION IS PROPAGATED AS SHEAR WAVES AND SO THAT COMPRESSION WAVES ARE SUBSTANTIALLY TOTALLY REFLECTED FROM THE BOREHOLE WALL, ABSORBING THE ACOUSTIC ENERGY TRANSMITTED OUTSIDE OF THE BEAM AND THE COMPRESSION WAVES REFLECTED FROM THE BOREHOLE WALL,
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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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |