US3120612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen-silicon logging method utilizing equal intensity but different energy neutrons
Assignee: Well Surveys Inc
•
Filing: 1959-04-03
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Granted: 1964-02-04
•
Expires: 1979-04-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Youmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:02
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101; G01V5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
THE METHOD OF WELL LOGGING WHICH COMPRISES IRRADIATING THE SUBSTANCES SURROUNDING A BOREHOLE WITH A FIRST INTENSITY OF NEUTRONS OF SUBSTANTIALLY A FIRST ENERGY SUFFICIENT TO INTERACT WITH OXYGEN NUCLEI IN A MANNER TO PRODUCE CHARACTERISTIC DECAY GAMMA RADIATIONS, DETECTING A REPRESENTATIVE NUMBER OF SID DECAY GAMMA RADIATIONS PRODUCED BY SAID OXYGEN NUCLEI AND DERIVING A FIRST ELECTRICAL SIGNAL FUNCTIONALLY RELATED THERETO IN CORRELATION WITH AN INDICATION OF BOREHOLE DEPTH, ON ANOTHER OCCASION IRRADIATING SAID SUBSTANCES WITH A SECOND INTENSITY OF NEUTRONS OF SUBSTANTIALLY A SECOND ENERGY LESS THAN SAID FIRST ENERGY BUT SUFFICIENT TO INTERACT WITH NUCLEI OTHER THAN OXYGEN IN A MANNER TO PRODUCE CHARACTERISTIC GAMMA RADIATIONS, SAID SECOND INTENSITY BEING AT LEAST AS GREAT AS SAID FIRST INTENSITY, DETECTING A REPRESENTATIVE NUMBER OF SAID DECAY GAMMA RADIATIONS PRODUCED BY SAID NUCLEI OTHER THAN OXYGEN AND DERIVING A SECOND ELECTRICAL SIGNAL FUNCTIONALLY RELATED THERETO IN CORRELATION WITH AN INDICATION OF BOREHOLE DEPTH, AND CORRELATIVELY RECORDING SAID FIRST AND SECOND ELECTRICAL SIGNALS.
Claim 2
Independent Claim
163 words
THE METHOD OF WELL LOGGING WHICH COMPRISES IRRADIATING THE SUBSTANCES SURROUNDING A BOREHOLE WITH A FIRST INTENSITY OF NEUTRONS OF SUBSTANTIALLY A FIRST ENERGY SUFFICIENT TO INTERACT WITH OXYGEN NUCLEI IN A MANNER TO PRODUCE CHARACTERISTIC DECAY GAMMA RADIATIONS, DETECTING A REPRESENTATIVE NUMBER OF SID DECAY GAMMA RADIATIONS PRODUCED BY SAID OXYGEN NUCLEI AND DERIVING A FIRST ELECTRICAL SIGNAL FUNCTIONALLY RELATED THERETO IN CORRELATION WITH AN INDICATION OF BOREHOLE DEPTH, ON ANOTHER OCCASION IRRADIATING SAID SUBSTANCES WITH A SECOND INTENSITY OF NEUTRONS OF SUBSTANTIALLY A SECOND ENERGY LESS THAN SAID FIRST ENERGY BUT SUFFICIENT TO INTERACT WITH NUCLEI OTHER THAN OXYGEN IN A MANNER TO PRODUCE CHARACTERISTIC GAMMA RADIATIONS, SAID SECOND INTENSITY BEING AT LEAST AS GREAT AS SAID FIRST INTENSITY, DETECTING A REPRESENTATIVE NUMBER OF SAID DECAY GAMMA RADIATIONS PRODUCED BY SAID NUCLEI OTHER THAN OXYGEN AND DERIVING A SECOND ELECTRICAL SIGNAL FUNCTIONALLY RELATED THERETO IN CORRELATION WITH AN INDICATION OF BOREHOLE DEPTH, AND CORRELATIVELY RECORDING SAID FIRST AND SECOND ELECTRICAL SIGNALS.
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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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |