Patent US3205356A successfully refreshed from Google Patents.
US3205356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron and gamma ray well logging
Assignee: Phillips Petroleum Co
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Filing: 1960-12-12
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Granted: 1965-09-07
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Joe D Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:45
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE PROCESS OF LOGGING GAMMA RAYS IN A WELL COMPRISING THE STEPS OF: GENERATING NEUTRONS AT A PREDETERMINED POSITION IN A WELL AT A CONSTANT RATE; EXPOSING THE NATURAL FORMATION SURROUNDING THE WELL TO SAID GENERATED NEUTRONS; SHIELDING A PORTION OF SAID WELL FROM SAID GENERATED NEUTRONS COMING DIRECTLY FROM SAID POSITION OF GENERATION, BUT NOT FROM SAID FORMATION; MEASURING THE INTENSITY OF THERMAL NETUTRON FLUX FROM SAID FORMATION AT A FIRST POINT IN SAID SHIELDED PORTION OF SAID WELL; DETERMINING FROM SAID INTENSITY MEASUREMENT A SECOND POINT IN SAID SHIELDED PORTION OF SAID WELL WHERE THERE IS A PREDETERMINED CONSTANT THERMAL NEUTRON FLUX; MEASURING THE INTENSITY OF GAMMA RAYS AT SAID SECOND POINT; AND LOGGING SAID INTENSITY OF GAMMA RAYS MEASURED AT SAID SECOND POINT.
Claim 2
Dependent Claim
126 words
THE PROCESS OF LOGGING GAMMA RAYS IN A WELL COMPRISING THE STEPS OF: GENERATING NEUTRONS AT A PREDETERMINED POSITION IN A WELL AT A CONSTANT RATE; EXPOSING THE NATURAL FORMATION SURROUNDING THE WELL TO SAID GENERATED NEUTRONS; SHIELDING A PORTION OF SAID WELL FROM SAID GENERATED NEUTRONS COMING DIRECTLY FROM SAID POSITION OF GENERATION, BUT NOT FROM SAID FORMATION; MEASURING THE INTENSITY OF THERMAL NETUTRON FLUX FROM SAID FORMATION AT A FIRST POINT IN SAID SHIELDED PORTION OF SAID WELL; DETERMINING FROM SAID INTENSITY MEASUREMENT A SECOND POINT IN SAID SHIELDED PORTION OF SAID WELL WHERE THERE IS A PREDETERMINED CONSTANT THERMAL NEUTRON FLUX; MEASURING THE INTENSITY OF GAMMA RAYS AT SAID SECOND POINT; AND LOGGING SAID INTENSITY OF GAMMA RAYS MEASURED AT SAID SECOND POINT.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |