Patent US3309658A successfully refreshed from Google Patents.
US3309658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplitude logging on alternate transmitter pulses
Assignee: Mobil Oil AS
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Filing: 1966-04-18
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Granted: 1967-03-14
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Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 Gerald C Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:47
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/48; G01V1/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
308 words
A BOREHOLE LOGGING SYSTEM HAVING A TRANSMITTER AND TWO RECEIVERS FOR MEASURING IN CORRELATION WITH DEPTH THE ATTENUATION PROPERTIES OF THE FORMATIONS ADJACENT SAID BOREHOLE THROUGH A DISTANCE EQUAL TO THE SPACING BETWEEN SAID RECEIVERS COMPRISING: DOWNHOLE MEANS MOVABLE LENGTHWISE OF SAID BOREHOLE AND INCLUDING SAID TWO RECEIVERS AND A TRANSMITTER SPACED FROM SAID TWO RECEIVERS A DISTANCE WHICH IS LARGE COMPARED WITH THE SPACING BETWEEN SAID TWO RECEIVERS, MEANS FOR PERIODICALLY ENERGIZING SAID TRANSMITTER FOR THE PRODUCTION OF A SUCCESSION OF ACOUSTIC PULSES FOR TRAVEL THROUGH SAID FORMATIONS ALONG SAID BOREHOLE, CABLE-CONDUCTOR MEANS CONNECTED TO SAID RECEIVERS AND EXTENDING TO THE SURFACE FOR TRANSMITTAL THERETO TO SIGNALS PRODUCED BY SAID RECEIVERS IN RESPONSE TO THE ACOUSTIC PULSES TRAVELING THROUGH SAID FORMATIONS FROM SAID TRANSMITTER TO FIRST ONE AND THEN THE OTHER OF SAID RECEIVERS, ELECTRICAL CIRCUIT MEANS LOCATED AT SAID SURFACE AND CONNECTED TO SAID CABLE-CONDUCTOR MEANS FOR PRODUCING OUTPUTS RESPECTIVELY PROPORTIONAL TO THE SIGNAL AMPLITUDE DEVELOPED FIRST BY ONE AND THEN THE OTHER OF SAID RECEIVERS AS A RESULT OF SAID ACOUSTIC PULSES GENERATED BY SAID TRANSMITTER, SELECTIVE MEANS DISPOSED BETWEEN SAID TWO RECEIVERS AND SAID ELECTRICAL CIRCUIT MEANS FOR APPLYING THERETO THE SIGNALS DEVELOPED BY ONE OF SAID RECEIVERS IN RESPONSE TO ONE OF SAID ACOUSTIC PULSES AND THEREAFTER FOR APPLYING TO SAID ELECTRICAL CIRCUIT MEANS THE SIGNALS FROM A SECOND OF SAID RECEIVERS IN RESPONSE TO A SECOND OF SAID TRANSMITTER PULES, AND DIFFERENCE MEANS FOR PRODUCING AN OUTPUT SIGNAL REPRESENTATIVE OF THE DIFFERENCE BETWEEN SAID AMPLITUDES OF SAID SIGANAL DEVELOPED FIRST BY ONE OF SAID RECEIVERS AND THEN BY A SECOND OF SAID RECEIVERS AS A MEASURE OF THE ATTENUATION OF SAID ACOUSTIC PULSES DURING THEIR TRAVEL THROUGH THE SEPARATION DISTANCE BETWEEN SAID RECEIVERS, THE LARGE SPACING BETWEEN SAID TRANSMITTER AND SAID TWO RECEIVERS ENHANCING THE ACCURACY OF THE MEASUREMENT OF SAID ATTENUATION.
Claim 2
Dependent Claim
308 words
A BOREHOLE LOGGING SYSTEM HAVING A TRANSMITTER AND TWO RECEIVERS FOR MEASURING IN CORRELATION WITH DEPTH THE ATTENUATION PROPERTIES OF THE FORMATIONS ADJACENT SAID BOREHOLE THROUGH A DISTANCE EQUAL TO THE SPACING BETWEEN SAID RECEIVERS COMPRISING: DOWNHOLE MEANS MOVABLE LENGTHWISE OF SAID BOREHOLE AND INCLUDING SAID TWO RECEIVERS AND A TRANSMITTER SPACED FROM SAID TWO RECEIVERS A DISTANCE WHICH IS LARGE COMPARED WITH THE SPACING BETWEEN SAID TWO RECEIVERS, MEANS FOR PERIODICALLY ENERGIZING SAID TRANSMITTER FOR THE PRODUCTION OF A SUCCESSION OF ACOUSTIC PULSES FOR TRAVEL THROUGH SAID FORMATIONS ALONG SAID BOREHOLE, CABLE-CONDUCTOR MEANS CONNECTED TO SAID RECEIVERS AND EXTENDING TO THE SURFACE FOR TRANSMITTAL THERETO TO SIGNALS PRODUCED BY SAID RECEIVERS IN RESPONSE TO THE ACOUSTIC PULSES TRAVELING THROUGH SAID FORMATIONS FROM SAID TRANSMITTER TO FIRST ONE AND THEN THE OTHER OF SAID RECEIVERS, ELECTRICAL CIRCUIT MEANS LOCATED AT SAID SURFACE AND CONNECTED TO SAID CABLE-CONDUCTOR MEANS FOR PRODUCING OUTPUTS RESPECTIVELY PROPORTIONAL TO THE SIGNAL AMPLITUDE DEVELOPED FIRST BY ONE AND THEN THE OTHER OF SAID RECEIVERS AS A RESULT OF SAID ACOUSTIC PULSES GENERATED BY SAID TRANSMITTER, SELECTIVE MEANS DISPOSED BETWEEN SAID TWO RECEIVERS AND SAID ELECTRICAL CIRCUIT MEANS FOR APPLYING THERETO THE SIGNALS DEVELOPED BY ONE OF SAID RECEIVERS IN RESPONSE TO ONE OF SAID ACOUSTIC PULSES AND THEREAFTER FOR APPLYING TO SAID ELECTRICAL CIRCUIT MEANS THE SIGNALS FROM A SECOND OF SAID RECEIVERS IN RESPONSE TO A SECOND OF SAID TRANSMITTER PULES, AND DIFFERENCE MEANS FOR PRODUCING AN OUTPUT SIGNAL REPRESENTATIVE OF THE DIFFERENCE BETWEEN SAID AMPLITUDES OF SAID SIGANAL DEVELOPED FIRST BY ONE OF SAID RECEIVERS AND THEN BY A SECOND OF SAID RECEIVERS AS A MEASURE OF THE ATTENUATION OF SAID ACOUSTIC PULSES DURING THEIR TRAVEL THROUGH THE SEPARATION DISTANCE BETWEEN SAID RECEIVERS, THE LARGE SPACING BETWEEN SAID TRANSMITTER AND SAID TWO RECEIVERS ENHANCING THE ACCURACY OF THE MEASUREMENT OF SAID ATTENUATION.
Claim 3
Dependent Claim
261 words
AN ACOUSTIC AMPLITUDE LOGGING SYSTEM COMPRISING: DOWNHOLE MEANS HAVING A PLURALITY OF TRANSDUCERS IN CLUDING A TRANSMITTER OF TIME-SPACED ACOUSTIC PULSES AND AT LEAST TWO RECEIVERS, SYNC MEANS FOR GENERATING SYNC PULSES REPRESENTATIVE OF THE TIME OCCURRENCE OF THE GENERATION OF ACOUSTIC PULSES BY SAID TRANSMITTER, CIRCUIT MEANS CONNECTING SAID TRANSDUCERS TO SURFACE EQUIPMENT, SAID SURFACE EQUIPMENT INCLUDING AMPLITUDE SENSING MEANS FOR PRODUCING SEPARATE AMPLITUDE FUNCTIONS REPRESENTATIVE OF THE AMPLITUDES OF ACOUSTIC ENERGY APPEARING AT SAID RECEIVERS, A BISTABLE CIRCUIT, SAID SYNC PULSES BEIONG APPLIED TO SAID BISTABLE CIRCUIT TO SWITCH IT BETWEEN STABLE STATES IN RESPONSE TO EACH SYNC PULSE, GATING MEANS CONNECTED BETWEENS AID RECEIVERS AND SAID AMPLITUDE SENSING MEANS THE OUTPUT OF SAID BISTABLE CIRCUIT BEING APPLIED TO SAID GATING MEANS TO ENABLE IT TO PASS THE OUTPUT OF A FIRST OF SAID RECEIVERS AFTER A FIRST AND SUCCEEDING ALTERNATE SYNC PULSES AND TO PASS THE OUTPUT OF A SECOND OF SAID RECEIVERS AFTER A SECOND AND SUCCEEDING ALTERNATE SYNC PULSES SO THAT SAID AMPLITUDE SENSING MEANS PRODUCES A FIRST SAID AMPLITUDE FUNCTIONS REPRESENTATIVE OF THE AMPLITUDE OF AT LEAST A PORTION OF A FIRST ACOUSTIC PULSE AFTER TRAVEL ALONG THE FORMATIONS BETWEEN SAID TRANSMITTER AND A FIRST OF SAID RECEIVERS, AND A SECOND OF SAID AMPLITUDE FUNCTIONS REPRESENTATIVE OF THE AMPLITUDE OF AT LEAST A PORTION OF A SECOND ACOUSTIC PULSE AFTER TRAVEL ALONG SAID FORMATIONS BETWEEN SAID TRANSMITTER AND A SECOND OF SAID RECEIVERS, AND MEANS FOR PRODUCING FROM SAID SEPARATE AMPLITUDE FUNCTIONS A SIGNAL REPRESENTATIVE OF THE ATTENUATION OF ACOUSTIC ENERGY BETWEEN SAID TWO RECEIVERS.
Claim 4
Dependent Claim
261 words
AN ACOUSTIC AMPLITUDE LOGGING SYSTEM COMPRISING: DOWNHOLE MEANS HAVING A PLURALITY OF TRANSDUCERS IN CLUDING A TRANSMITTER OF TIME-SPACED ACOUSTIC PULSES AND AT LEAST TWO RECEIVERS, SYNC MEANS FOR GENERATING SYNC PULSES REPRESENTATIVE OF THE TIME OCCURRENCE OF THE GENERATION OF ACOUSTIC PULSES BY SAID TRANSMITTER, CIRCUIT MEANS CONNECTING SAID TRANSDUCERS TO SURFACE EQUIPMENT, SAID SURFACE EQUIPMENT INCLUDING AMPLITUDE SENSING MEANS FOR PRODUCING SEPARATE AMPLITUDE FUNCTIONS REPRESENTATIVE OF THE AMPLITUDES OF ACOUSTIC ENERGY APPEARING AT SAID RECEIVERS, A BISTABLE CIRCUIT, SAID SYNC PULSES BEIONG APPLIED TO SAID BISTABLE CIRCUIT TO SWITCH IT BETWEEN STABLE STATES IN RESPONSE TO EACH SYNC PULSE, GATING MEANS CONNECTED BETWEENS AID RECEIVERS AND SAID AMPLITUDE SENSING MEANS THE OUTPUT OF SAID BISTABLE CIRCUIT BEING APPLIED TO SAID GATING MEANS TO ENABLE IT TO PASS THE OUTPUT OF A FIRST OF SAID RECEIVERS AFTER A FIRST AND SUCCEEDING ALTERNATE SYNC PULSES AND TO PASS THE OUTPUT OF A SECOND OF SAID RECEIVERS AFTER A SECOND AND SUCCEEDING ALTERNATE SYNC PULSES SO THAT SAID AMPLITUDE SENSING MEANS PRODUCES A FIRST SAID AMPLITUDE FUNCTIONS REPRESENTATIVE OF THE AMPLITUDE OF AT LEAST A PORTION OF A FIRST ACOUSTIC PULSE AFTER TRAVEL ALONG THE FORMATIONS BETWEEN SAID TRANSMITTER AND A FIRST OF SAID RECEIVERS, AND A SECOND OF SAID AMPLITUDE FUNCTIONS REPRESENTATIVE OF THE AMPLITUDE OF AT LEAST A PORTION OF A SECOND ACOUSTIC PULSE AFTER TRAVEL ALONG SAID FORMATIONS BETWEEN SAID TRANSMITTER AND A SECOND OF SAID RECEIVERS, AND MEANS FOR PRODUCING FROM SAID SEPARATE AMPLITUDE FUNCTIONS A SIGNAL REPRESENTATIVE OF THE ATTENUATION OF ACOUSTIC ENERGY BETWEEN SAID TWO RECEIVERS.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |