Patent US3120612A successfully refreshed from Google Patents.
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
•
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 17:24
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.
References Cited (Backward Citations)
USRE24383E
Cited
CA485339A
Cited
US2303688A
Cited
US2522522A
Cited
US2332873A
Cited
US2390433A
Cited
US2463733A
Cited
US2884534A
Cited
GB724441A
Cited
US2769096A
Cited
US2965757A
Cited
US2905826A
Cited
US2914677A
Cited
US2996618A
Cited
US2948810A
Cited
US2867728A
Cited
US2963586A
Cited
US3035174A
Cited
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 |