US3211909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen index and gamma ray well logging
Assignee: Phillips Petroleum Co
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Filing: 1961-01-09
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Granted: 1965-10-12
•
Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Joe D Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:27
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD FOR LOGGING AN OPENING IN THE EARTH COMPRISING PROVIDING A SOURCE OF FAST NEUTRONS, PASSING SAID SOURCE OF NEUTRONS THROUGH SAID OPENING IN THE EARTH THEREBY IRRADIATING EARTH FORMATIONS SURROUNDING SAID OPENING, DETECTING GAMMA RAYS FROM THE IRRADIATED FORMATIONS AND FROM THE DETECTING STEP EMITTING A SIGNAL PROPORTIONAL TO THE DETECTED GAMMA RAYS, ANALYZING THIS EMITTED SIGNAL FOR A PULSE PROPORTIONAL TO A SILICON PEAK IN TERMS OF MEV., FROM THIS ANALYZIING STEP EMITTING A SIGNAL PROPORTIONAL TO SAID SILICON PEAK, FURTHER ANALYZING THE EMITTED SIGNAL PROPORTIONAL TO THE DETECTED GAMMA RAYS FOR A PULSE PROPORTIONAL TO AN OXYGEN PEAK IN TERMS OF MEV. AND FROM THIS ANALYZING STEP EMITTING A SIGNAL PROPORTIONAL TO SAID OXYGEN PEAK, DIVIDING SAID SIGNAL PROPORTIONAL TO SAID SILICON PEAK BY SAID SIGNAL PROPORTIONAL TO SAID OXYGEN PEAK AND FROM THIS DIVIDING OPERATION EMITTING A SIGNAL PROPORTIONAL TO THE QUOTIENT OF THE DIVIDING OPERATION, SAID QUOTIENT BEING AN INDICATION OF THE RATIO OF SILICON TO OXYGEN OF THE FORMATIONS LOGGED.
Claim 2
Independent Claim
167 words
A METHOD FOR LOGGING AN OPENING IN THE EARTH COMPRISING PROVIDING A SOURCE OF FAST NEUTRONS, PASSING SAID SOURCE OF NEUTRONS THROUGH SAID OPENING IN THE EARTH THEREBY IRRADIATING EARTH FORMATIONS SURROUNDING SAID OPENING, DETECTING GAMMA RAYS FROM THE IRRADIATED FORMATIONS AND FROM THE DETECTING STEP EMITTING A SIGNAL PROPORTIONAL TO THE DETECTED GAMMA RAYS, ANALYZING THIS EMITTED SIGNAL FOR A PULSE PROPORTIONAL TO A SILICON PEAK IN TERMS OF MEV., FROM THIS ANALYZIING STEP EMITTING A SIGNAL PROPORTIONAL TO SAID SILICON PEAK, FURTHER ANALYZING THE EMITTED SIGNAL PROPORTIONAL TO THE DETECTED GAMMA RAYS FOR A PULSE PROPORTIONAL TO AN OXYGEN PEAK IN TERMS OF MEV. AND FROM THIS ANALYZING STEP EMITTING A SIGNAL PROPORTIONAL TO SAID OXYGEN PEAK, DIVIDING SAID SIGNAL PROPORTIONAL TO SAID SILICON PEAK BY SAID SIGNAL PROPORTIONAL TO SAID OXYGEN PEAK AND FROM THIS DIVIDING OPERATION EMITTING A SIGNAL PROPORTIONAL TO THE QUOTIENT OF THE DIVIDING OPERATION, SAID QUOTIENT BEING AN INDICATION OF THE RATIO OF SILICON TO OXYGEN OF THE FORMATIONS LOGGED.
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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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |