US3276533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic character logging
Assignee: Shell USA Inc
•
Filing: 1963-02-25
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Granted: 1966-10-04
•
Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 George R Pickett
- 👤 Edward J Kung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:26
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/48; G01V1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A METHOD FOR IDENTIFYING THE WAVE ARRIVAL TIMES IN AN ACOUSTICAL LOGGING SIGNAL COMPRISING: OBTAINING AT LEAST TWO ACOUSTICAL LOGGING SIGNALS, EACH SIGNAL HAVING A DIFFERENT TRANSMITTER RECEIVER SPACING; CONVERTING EACH OF THE ACOUSTICAL LOGGING SIGNALS TO A GRAPHIC RECORD IN WHICH AMPLITUDE VERSUS TIME; SELECTING THE FIRST PEAK IN EACH GRAPHIC RECORD OF THE SIGNALS AND DENOTING THE PEAKS AS T11 AND T12, RESPECTIVELY, AND SELECTING THE NEXT SUCCEEDING PEAK AFTER THE FIRST PEAK IN EACH GRAPHIC RECORD OF THE SAID TWO SIGNALS AND DENOTING THE SUCCEDING PEAKS AS T21'' AND T22''; MEASURING THE TIME DIFFERENCE BETWEEN (T22''-T21'' AND (T12-T11); AND CONTINUING TO SELECT THE NEXT SUCCEDING PEAK IN EACH GRAPHIC RECORD OF THE TWO SIGNALS AND OBTAINING THE TIME DIFFERENCE AS ABOVE UNITL THE TIME DIFFERENCE IS SIGNIFICANTLY DIFFERENT THAN ZERO, THE SUCCEEDING PEAK GIVING A TIME DIFFERENCE SIGNIFICANTLY DIFFERENCE THAN ZERO CORRESPONDING TO THEARRIVAL OF THE FIRST SHEAR WAVE IN THE SIGNAL OF SAID TWO SIGNALS HAVING THE SHORTEST TRANSMITTER RECEIVER SPACING.
Claim 2
Independent Claim
165 words
A METHOD FOR IDENTIFYING THE WAVE ARRIVAL TIMES IN AN ACOUSTICAL LOGGING SIGNAL COMPRISING: OBTAINING AT LEAST TWO ACOUSTICAL LOGGING SIGNALS, EACH SIGNAL HAVING A DIFFERENT TRANSMITTER RECEIVER SPACING; CONVERTING EACH OF THE ACOUSTICAL LOGGING SIGNALS TO A GRAPHIC RECORD IN WHICH AMPLITUDE VERSUS TIME; SELECTING THE FIRST PEAK IN EACH GRAPHIC RECORD OF THE SIGNALS AND DENOTING THE PEAKS AS T11 AND T12, RESPECTIVELY, AND SELECTING THE NEXT SUCCEEDING PEAK AFTER THE FIRST PEAK IN EACH GRAPHIC RECORD OF THE SAID TWO SIGNALS AND DENOTING THE SUCCEDING PEAKS AS T21'' AND T22''; MEASURING THE TIME DIFFERENCE BETWEEN (T22''-T21'' AND (T12-T11); AND CONTINUING TO SELECT THE NEXT SUCCEDING PEAK IN EACH GRAPHIC RECORD OF THE TWO SIGNALS AND OBTAINING THE TIME DIFFERENCE AS ABOVE UNITL THE TIME DIFFERENCE IS SIGNIFICANTLY DIFFERENT THAN ZERO, THE SUCCEEDING PEAK GIVING A TIME DIFFERENCE SIGNIFICANTLY DIFFERENCE THAN ZERO CORRESPONDING TO THEARRIVAL OF THE FIRST SHEAR WAVE IN THE SIGNAL OF SAID TWO SIGNALS HAVING THE SHORTEST TRANSMITTER RECEIVER SPACING.
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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 |