Patent US3258593A successfully refreshed from Google Patents.
US3258593A
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US
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Chlorine logging afparatus with temperature compensation circuit
Assignee: —
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Filing: —
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Granted: 1966-06-28
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:29
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101; H; H03; H03F; H03F1/00; H03F1/30; H03F1/302; H03F3/00; H03F3/68; Y; Y10; Y10S; Y10S165/00; Y10S165/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A RADIOACTIVE LOGGING SYSTEM FOR DETECTING RADIATION IN A WELL BORE AND CONVERTING THE DETECTED RADIATION TO ELECTRICAL SIGNALS FOR TRANSMISSION TO THE SURFACE OF THE EARTH INCLUDING (A) A SCINTILLATOR RESPONSIVE TO RADIATION, (B) A PHOTOMULTIPLIER POSITIONED ADJACENT SAID SCINTILLATOR AND ADAPTED TO CONVERT SCINTILLATIONS TO ELECTRICAL PULSES, (C) A HIGH VOLTAGE GENERATOR MEANS CONNECTED TO SAID PHOTOMULTIPLIER TO SUPPLY POWER TO SAID PHOTOMULTIPLIER. (D) A TEMPERATURE RESPONSIVE GAIN STABILIZATION CIRCUIT CONNECTED TO SAID PHOTOMULTIPLIER AND SIAD VOLTAGE GENERATOR MEANS TO VARY THE POWER TO SAID PHOTOMULTIPLIER IN RESPONSE TO TEMPERATAURE VARIATIONS, AND (E) A PULSE HEIGHT ANALYZER CIRCUIT CONNECTED TO THE OUTPUT OF SAID PHOTOMULTIPLIER TO SELECTIVELY PASS ELECTRICAL PULSES REPRESENTATIVE OF AT LEAST ONE PRESELECTED ENERGY RANGE OF RADIATION WHEREIN SAID ANALYZER INCLUDES TWO PARALLEL ELECTRICAL CIRCUITS OF WHICH HTE FIRST CIRCUIT IS ADAPTED TO PASS PULSES REPRESENTATIVE OF RADIATION ABOVE A PRESELECTED LOW ENERGY LEVEL AND THE SECOND CIRCUIT IS ADAPTED T PASS PULSES REPRESENTATIVE OF RADIATION WITHIN A NARROW BAND OF ENERGY ABOVE THAT PASSED BY THE FIRST CIRCUIT, EACH OF SAID
Claim 2
Dependent Claim
177 words
A RADIOACTIVE LOGGING SYSTEM FOR DETECTING RADIATION IN A WELL BORE AND CONVERTING THE DETECTED RADIATION TO ELECTRICAL SIGNALS FOR TRANSMISSION TO THE SURFACE OF THE EARTH INCLUDING (A) A SCINTILLATOR RESPONSIVE TO RADIATION, (B) A PHOTOMULTIPLIER POSITIONED ADJACENT SAID SCINTILLATOR AND ADAPTED TO CONVERT SCINTILLATIONS TO ELECTRICAL PULSES, (C) A HIGH VOLTAGE GENERATOR MEANS CONNECTED TO SAID PHOTOMULTIPLIER TO SUPPLY POWER TO SAID PHOTOMULTIPLIER. (D) A TEMPERATURE RESPONSIVE GAIN STABILIZATION CIRCUIT CONNECTED TO SAID PHOTOMULTIPLIER AND SIAD VOLTAGE GENERATOR MEANS TO VARY THE POWER TO SAID PHOTOMULTIPLIER IN RESPONSE TO TEMPERATAURE VARIATIONS, AND (E) A PULSE HEIGHT ANALYZER CIRCUIT CONNECTED TO THE OUTPUT OF SAID PHOTOMULTIPLIER TO SELECTIVELY PASS ELECTRICAL PULSES REPRESENTATIVE OF AT LEAST ONE PRESELECTED ENERGY RANGE OF RADIATION WHEREIN SAID ANALYZER INCLUDES TWO PARALLEL ELECTRICAL CIRCUITS OF WHICH HTE FIRST CIRCUIT IS ADAPTED TO PASS PULSES REPRESENTATIVE OF RADIATION ABOVE A PRESELECTED LOW ENERGY LEVEL AND THE SECOND CIRCUIT IS ADAPTED T PASS PULSES REPRESENTATIVE OF RADIATION WITHIN A NARROW BAND OF ENERGY ABOVE THAT PASSED BY THE FIRST CIRCUIT, EACH OF SAID
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |