US2722282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic well logging system
Assignee: ExxonMobil Oil Corp
•
Filing: 1950-08-24
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Granted: 1955-11-01
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Expires: 1970-08-24
Abstract
No abstract record available.
Inventors
- 👤 Mcdonald Pat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52; Y; Y10; Y10S; Y10S181/00; Y10S181/40; Y10S181/402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN AN ACOUSTIC WELL LOGGING SYSTEM HAVING CABLESUPPORTING MEANS FOR MOVEMENT ALONG THE BORE OF A WELL, THE COMBINATION COMPRISING A PAIR OF SOUND CHAMBERS, EACH FORMED BY AN ELONGATED RIGID METALLIC CYLINDER OF HIGH ACOUSTICAL CONDUCTIVITY WITH WALLS PRESENTING A LARGE CONTACT AREA FOR BORE HOLE FLUIDS AND OF ADEQUATE THICKNESS TO WITHSTAND THE HYDROSTATIC PRESSURES EXISTING IN DEEP BORE HOLES, A METALLIC STRUCTURE OF LOW ACOUSTICAL CONDUCTIVITY INTERPOSED BETWEEN AND INTERCONNECTING ADJACENT ENDS OF SAID CHAMBERS AND FORMING A HIGH ACOUSTIC IMPEDANCE BETWEEN THEM, AN ACOUSTICALLY CONDUCTIVE LIQUID AT LEAST PARTIALLY FILING EACH OF SAID CHAMBERS, A TRANSDUCER FOR EACH OF SAID CHAMBERS, AND MEANS SUPPORTING EACH OF SAID TRANSDUCERS IN SPACED RELATION WITH THE WALLS OF ITS ASSOCIATED SOUND CHAMBER FOR TRANSMISSION AND RECEPTION RESPECTIVELY OF ACOUSTICAL ENERGY TO AND FROM SAID WALLS SUBSTANTIALLY ENTIRELY BY WAY OF SAID LIQUID.
Claim 2
Dependent Claim
143 words
IN AN ACOUSTIC WELL LOGGING SYSTEM HAVING CABLESUPPORTING MEANS FOR MOVEMENT ALONG THE BORE OF A WELL, THE COMBINATION COMPRISING A PAIR OF SOUND CHAMBERS, EACH FORMED BY AN ELONGATED RIGID METALLIC CYLINDER OF HIGH ACOUSTICAL CONDUCTIVITY WITH WALLS PRESENTING A LARGE CONTACT AREA FOR BORE HOLE FLUIDS AND OF ADEQUATE THICKNESS TO WITHSTAND THE HYDROSTATIC PRESSURES EXISTING IN DEEP BORE HOLES, A METALLIC STRUCTURE OF LOW ACOUSTICAL CONDUCTIVITY INTERPOSED BETWEEN AND INTERCONNECTING ADJACENT ENDS OF SAID CHAMBERS AND FORMING A HIGH ACOUSTIC IMPEDANCE BETWEEN THEM, AN ACOUSTICALLY CONDUCTIVE LIQUID AT LEAST PARTIALLY FILING EACH OF SAID CHAMBERS, A TRANSDUCER FOR EACH OF SAID CHAMBERS, AND MEANS SUPPORTING EACH OF SAID TRANSDUCERS IN SPACED RELATION WITH THE WALLS OF ITS ASSOCIATED SOUND CHAMBER FOR TRANSMISSION AND RECEPTION RESPECTIVELY OF ACOUSTICAL ENERGY TO AND FROM SAID WALLS SUBSTANTIALLY ENTIRELY BY WAY OF SAID LIQUID.
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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) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |