US2680201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron well logging
Assignee: Individual
•
Filing: 1950-06-05
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Granted: 1954-06-01
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Expires: 1970-06-05
Abstract
No abstract record available.
Inventors
- 👤 Serge A Scherbatskoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:05
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A SYSTEM FOR DETERMINING THE CHARACTER OF FORMATIONS TRAVERSED BY A BORE HOLE, COMPRISING A SORCE OF NEUTRONS, A DETECTOR OF THERMAL NEUTRONS. A HYDROGENOUS SUBSTANCE SURROUNDING SAID DETECTOR, A LAYER OF SUBSTANCE THAT ABSORBS THERMAL NEUTRONS, SAID LAYER SURROUNDING SAID HYDROGENOUS SUBSTANCE, MEANS FOR LOWERING THE AFORESAID ELEMENTS INTO SAID HOLE, WHEREBY THE FORMATIONS ADJACENT TO SAID HOLE ARE IRRADIATED WITH NEUTRONS FROM SAID SOURCE AND EMIT NEUTRONS TOWARDS SAID DETECTOR AND WHEREBY A PORTION OF SAID EMITTED NEUTRONS HAVING ENERGY ABOVE THE THERMAL VALUE GRADUALLY LOSE THEIR ENERGY BY TRAVERSING SAID HYDROGENOUS SUBSTANCE UNTIL THEY REACH THERMAL VALUE AND ENTER SAID DETECTOR, THE WIDTH OF THE ENERGY RANGE OF NEUTRONS WITHIN SAID PORTION DEPENDING UPON THE THICKNESS OF SAID HYDROGENOUS SUBSTANCE, SAID DETECTOR BEING RESPONSIVE TO NEUTRONS WITHIN SAID PORTION AND PRODUCING A CURRENT REPRESENTING THE INTENSITY OF NEUTRONS WITHIN SAID PORTION, MEANS FOR DETERMINING THE DEPTH TO WHICH SAID ELEMENTS ARE LOWERED, AND MEANS FOR RECORDING SAID CURRENT IN CORRELATION WITH SAID DEPTH.
Claim 2
Independent Claim
166 words
A SYSTEM FOR DETERMINING THE CHARACTER OF FORMATIONS TRAVERSED BY A BORE HOLE, COMPRISING A SORCE OF NEUTRONS, A DETECTOR OF THERMAL NEUTRONS. A HYDROGENOUS SUBSTANCE SURROUNDING SAID DETECTOR, A LAYER OF SUBSTANCE THAT ABSORBS THERMAL NEUTRONS, SAID LAYER SURROUNDING SAID HYDROGENOUS SUBSTANCE, MEANS FOR LOWERING THE AFORESAID ELEMENTS INTO SAID HOLE, WHEREBY THE FORMATIONS ADJACENT TO SAID HOLE ARE IRRADIATED WITH NEUTRONS FROM SAID SOURCE AND EMIT NEUTRONS TOWARDS SAID DETECTOR AND WHEREBY A PORTION OF SAID EMITTED NEUTRONS HAVING ENERGY ABOVE THE THERMAL VALUE GRADUALLY LOSE THEIR ENERGY BY TRAVERSING SAID HYDROGENOUS SUBSTANCE UNTIL THEY REACH THERMAL VALUE AND ENTER SAID DETECTOR, THE WIDTH OF THE ENERGY RANGE OF NEUTRONS WITHIN SAID PORTION DEPENDING UPON THE THICKNESS OF SAID HYDROGENOUS SUBSTANCE, SAID DETECTOR BEING RESPONSIVE TO NEUTRONS WITHIN SAID PORTION AND PRODUCING A CURRENT REPRESENTING THE INTENSITY OF NEUTRONS WITHIN SAID PORTION, MEANS FOR DETERMINING THE DEPTH TO WHICH SAID ELEMENTS ARE LOWERED, AND MEANS FOR RECORDING SAID CURRENT IN CORRELATION WITH SAID DEPTH.
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) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |