US2948810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delayed gamma radiation log of oxygen
Assignee: ExxonMobil Oil Corp
•
Filing: 1954-10-25
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Granted: 1960-08-09
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Richard L Caldwell
- 👤 Stanley E Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:26
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE METHOD OF DETERMINING VARIATIONS IN OXYGEN CONCENTRATION IN EARTH FORMATIONS WHICH COMPRISES MOVING A SOURCE OF NEUTRONS OF ENERGY OF AT LEAST 9.5 M.E.V. ALONG A WELL BORE TO BOMBARD FORMATIONS ADJACENT THE WELL BORE, DETECTING GAMMA RADIATION FOLLOWING CESSATION OF BOMBARDMENT BY AN INTERVAL OF THE ORDER OF THE HALF-LIFE OF NITROGEN 16 AT SUCCESSIVE POINTS IN SAID WELL BORE, AND SELECTIVELY RECORDING THE INTENSITY OF THE COMPONENT OF THE DETECTED GAMMA RADIATION CHARACTERISTIC AS TO TIME AND ENERGY OF EMANATIONS FROM NITROGEN 16 PRODUCED UPON DISINTEGRATION OF OXYGEN AS A FUNCTION OF
Claim 2
Independent Claim
95 words
THE METHOD OF DETERMINING VARIATIONS IN OXYGEN CONCENTRATION IN EARTH FORMATIONS WHICH COMPRISES MOVING A SOURCE OF NEUTRONS OF ENERGY OF AT LEAST 9.5 M.E.V. ALONG A WELL BORE TO BOMBARD FORMATIONS ADJACENT THE WELL BORE, DETECTING GAMMA RADIATION FOLLOWING CESSATION OF BOMBARDMENT BY AN INTERVAL OF THE ORDER OF THE HALF-LIFE OF NITROGEN 16 AT SUCCESSIVE POINTS IN SAID WELL BORE, AND SELECTIVELY RECORDING THE INTENSITY OF THE COMPONENT OF THE DETECTED GAMMA RADIATION CHARACTERISTIC AS TO TIME AND ENERGY OF EMANATIONS FROM NITROGEN 16 PRODUCED UPON DISINTEGRATION OF OXYGEN AS A FUNCTION OF
References Cited (Backward Citations)
US2308361A
Cited
US2353619A
Cited
US2648012A
Cited
US2752504A
Cited
US2769096A
Cited
US2689918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |