US3289156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical logging for determining fractures
Assignee: Dresser Industries Inc
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Filing: 1963-12-30
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Granted: 1966-11-29
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 John C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:25
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/02; G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/48; G01V1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A METHOD OF ACOUSTIC LOGGING OF THE FORMATIONS ENCIRCLING AN EARTH BOREHOLE TO DETERMINED FRACTURES IN SAID FORMATIONS COMPRISING: REPETITIVELY GENERATING ACOUSTIC WAVES IN THE BOREHOLE; DETECTING ARRIVAL OF EACH OF SUCH WAVES AT EACH OF A PAIR OF DETECTING STATIONS SPACED AT A FIXED DISTANCE APART LONGITUDINALLY AND DERIVING ELECTRICAL SIGNALS INDICATIVE OF SAID ARRIVALS; DETERMINING FROM SAID SIGNALS THE TIME INTERVAL BETWEEN THE RESPECTIVE ARRIVALS OF SAID ACOUSTIC WAVE AT SAID TWO STATIONS TO DETERMINE THE VELOCITY OF SAID WAVES IN SAID FORMATION; DETECTING AT ONE OF SAID STATIONS THE TOTAL AMPLITUDE OF THE ACOUSTIC WAVE ARRIVING AT THE STATION, DERIVING AN ELECTRIAL SIGNAL CHARACTERISTIC OF THE ACOUSTIC PATTERN OF SAID ACOUSTIC ENERGY TRAVELING IN SAID FORMATION, INTEGRATING SAID SIGNAL TO DETERMINE THE TOTAL ENERGY LOSS OF EACH OF SAID WAVES IN SAID FORMATION; RECORDING RELATIVE TO DEPTH A LOG OF THE VELOCITY AND SUPERIMPOSING THEREON A LOG OF TOTAL ENERGY LOSS AND NOTING AREAS OF DEPARTURE WHEREBY AREAS OF FRACTURE IN THE FORMATION MAY BE DETERMINED.
Claim 2
Independent Claim
169 words
A METHOD OF ACOUSTIC LOGGING OF THE FORMATIONS ENCIRCLING AN EARTH BOREHOLE TO DETERMINED FRACTURES IN SAID FORMATIONS COMPRISING: REPETITIVELY GENERATING ACOUSTIC WAVES IN THE BOREHOLE; DETECTING ARRIVAL OF EACH OF SUCH WAVES AT EACH OF A PAIR OF DETECTING STATIONS SPACED AT A FIXED DISTANCE APART LONGITUDINALLY AND DERIVING ELECTRICAL SIGNALS INDICATIVE OF SAID ARRIVALS; DETERMINING FROM SAID SIGNALS THE TIME INTERVAL BETWEEN THE RESPECTIVE ARRIVALS OF SAID ACOUSTIC WAVE AT SAID TWO STATIONS TO DETERMINE THE VELOCITY OF SAID WAVES IN SAID FORMATION; DETECTING AT ONE OF SAID STATIONS THE TOTAL AMPLITUDE OF THE ACOUSTIC WAVE ARRIVING AT THE STATION, DERIVING AN ELECTRIAL SIGNAL CHARACTERISTIC OF THE ACOUSTIC PATTERN OF SAID ACOUSTIC ENERGY TRAVELING IN SAID FORMATION, INTEGRATING SAID SIGNAL TO DETERMINE THE TOTAL ENERGY LOSS OF EACH OF SAID WAVES IN SAID FORMATION; RECORDING RELATIVE TO DEPTH A LOG OF THE VELOCITY AND SUPERIMPOSING THEREON A LOG OF TOTAL ENERGY LOSS AND NOTING AREAS OF DEPARTURE WHEREBY AREAS OF FRACTURE IN THE FORMATION MAY BE DETERMINED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |