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US3134904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of radioactivity tracer logging
Assignee: Well Surveys Inc
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Filing: 1959-12-18
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Granted: 1964-05-26
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Expires: 1979-12-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas P Hubbard
- 👤 Arthur H Youmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:56
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/14; G21; G21H; G21H5/00; G21H5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF GEOPHYSICAL PROSPECTING WHICH COMPRISES PREPARING A WELL FOR TRACER LOGGING STUDY UTILIZING A RADIOACTIVE TRACER MATERIAL EMITTING GAMMA RADIATIONS SUBSTANTIALLY ALL OF WHICH ARE OF ENERGY LESS THAN A PREESTABLISHED ENERGY LEVEL; AND LOGGING SAID WELL BY RADIOACTIVITY LOGGING METHODS, AND, IN THE COURSE THEREOF, SIMULTANEOUSLY OBTAINING A CURVE INDICATIVE OF RADIATION DUE TO TRACER ACTIVITY AND A CURVE EXCLUSIVE OF SUBSTANTIALLY ALL OF SAID TRACER ACTIVITY BUT INCLUSIVE OF NATURAL GAMMA RADIATIONS OF ENERGIES ABOVE SAID PRE-ESTABLISHED LEVEL, THEREBY TO PROVIDE A TRACER LOG AND A NATURAL GAMMA RAY LOG.
Claim 2
Independent Claim
94 words
A METHOD OF GEOPHYSICAL PROSPECTING WHICH COMPRISES PREPARING A WELL FOR TRACER LOGGING STUDY UTILIZING A RADIOACTIVE TRACER MATERIAL EMITTING GAMMA RADIATIONS SUBSTANTIALLY ALL OF WHICH ARE OF ENERGY LESS THAN A PREESTABLISHED ENERGY LEVEL; AND LOGGING SAID WELL BY RADIOACTIVITY LOGGING METHODS, AND, IN THE COURSE THEREOF, SIMULTANEOUSLY OBTAINING A CURVE INDICATIVE OF RADIATION DUE TO TRACER ACTIVITY AND A CURVE EXCLUSIVE OF SUBSTANTIALLY ALL OF SAID TRACER ACTIVITY BUT INCLUSIVE OF NATURAL GAMMA RADIATIONS OF ENERGIES ABOVE SAID PRE-ESTABLISHED LEVEL, THEREBY TO PROVIDE A TRACER LOG AND A NATURAL GAMMA RAY LOG.
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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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |