US3248544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorine logging system for optimizing subsurface bed resolution, depth of penetration, and logging speed
Assignee: Atlantic Richfield Co
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Filing: 1962-07-12
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Granted: 1966-04-26
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Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Dale H Reed
- 👤 Henry F Dunlap
- 👤 Thomas S Hutchinson
- 👤 Robert E Mccallum
- 👤 William C Pritchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:42
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A RADIOACTIVE CHLORINE LOGGING SYSTEM ADAPTED TO OPTIMIZE SUBSURFACE BED RESOLUTION AND DEPTH OF PENETRATION WITHOUT SACRIFICING LOGGING SPEED, INCLUDING, A LOGGING SONDE ADAPTED TO PASS THROUGH A BOREHOLE IN THE EARTH, WHICH SYSTEM COMPRISES: (A) AN ELONGATED SONDE, (B) A RADIOACTIVE SOURCE, ADAPTED TO PRODUCE AT LEAST 10**7 NEUTRONS PER SECOND, MOUNTED IN SAID SONDE, (C) A CYLINDRICAL SCINTILLATION CRYSTAL MEASURING AT LEAST 2.5 INCHES IN DIAMETER AND 2.5 INCHES LONG, THE CENTER OF SAID CRYSTAL BEING MOUNTED IN SAID SONDE ABOUT 20 TO 21 INCHES FROM THE CENTER OF SAID RADIOACTIVE SOURCE, (D) A PHOTOMULTIPLIER POSITIONED IN SAID SONDE ADJACENT SAID SCINTILLATION CRYSTAL AND ADAPTED TO CONVERT SCINTILLATIONS TO ELECTRICAL PULSES, (E) A PULSE HEIGHT ANALYZER CIRCUIT ELECTRICALLY CONNECTED TO THE OUTPUT OF SAID PHOTOMULTIPLIER, (F) A COUNT RATE MATER, HAVING A TIME CONSTANT OF ABOUT 10 SECONDS DURATION, ELECTRICALLY CONNECTED TO THE OUTPUT OF SAID PULSE HEIGHT ANALYZER, AND (G) A RECORDING MEANS ELECTRICALLY CONNECTED TO THE OUTPUT OF SAID COUNT RATE METER.
Claim 2
Dependent Claim
166 words
A RADIOACTIVE CHLORINE LOGGING SYSTEM ADAPTED TO OPTIMIZE SUBSURFACE BED RESOLUTION AND DEPTH OF PENETRATION WITHOUT SACRIFICING LOGGING SPEED, INCLUDING, A LOGGING SONDE ADAPTED TO PASS THROUGH A BOREHOLE IN THE EARTH, WHICH SYSTEM COMPRISES: (A) AN ELONGATED SONDE, (B) A RADIOACTIVE SOURCE, ADAPTED TO PRODUCE AT LEAST 10**7 NEUTRONS PER SECOND, MOUNTED IN SAID SONDE, (C) A CYLINDRICAL SCINTILLATION CRYSTAL MEASURING AT LEAST 2.5 INCHES IN DIAMETER AND 2.5 INCHES LONG, THE CENTER OF SAID CRYSTAL BEING MOUNTED IN SAID SONDE ABOUT 20 TO 21 INCHES FROM THE CENTER OF SAID RADIOACTIVE SOURCE, (D) A PHOTOMULTIPLIER POSITIONED IN SAID SONDE ADJACENT SAID SCINTILLATION CRYSTAL AND ADAPTED TO CONVERT SCINTILLATIONS TO ELECTRICAL PULSES, (E) A PULSE HEIGHT ANALYZER CIRCUIT ELECTRICALLY CONNECTED TO THE OUTPUT OF SAID PHOTOMULTIPLIER, (F) A COUNT RATE MATER, HAVING A TIME CONSTANT OF ABOUT 10 SECONDS DURATION, ELECTRICALLY CONNECTED TO THE OUTPUT OF SAID PULSE HEIGHT ANALYZER, AND (G) A RECORDING MEANS ELECTRICALLY CONNECTED TO THE OUTPUT OF SAID COUNT RATE METER.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |