US2909661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactivity borehole logging
Assignee: Texaco Development Corp
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Filing: 1954-09-02
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Granted: 1959-10-20
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Expires: 1974-09-02
Abstract
No abstract record available.
Inventors
- 👤 Fontaine C Armistead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:11
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD OF RADIOACTIVITY BOREHOLE LOGGING COMPRISING THE STEPS OF CONTINOUSLY PASSING, SUBSTANTIALLY ALONG THE AXIS OF THE BOREHOLE, A SORCE OF PENETRATIVE RADIATION FROM WHICH PRIMARY RADIATION PASSES OUTWARDLY INTO THE HOLE AND INTO THE FORMATIONS SURROUNDING THE HOLE TO IN INDUCE SECONDARY RADIATION THEREIN, CONTINUOUSLY DETECTING AND MESURING THE INTENSITY OF SAID SECONDARY RADIATION PASSING TOWARDS THE BOREHOLE AXIS AT TWO PREDETERMINED ANGLES WITH RESPECT TO SAID AXIS, AND DETERMINING THE RATIO OF THE QUANTITIES OF SECONDARY RADIATION AT EACH OF SAID ANGLES.
Claim 2
Independent Claim
85 words
A METHOD OF RADIOACTIVITY BOREHOLE LOGGING COMPRISING THE STEPS OF CONTINOUSLY PASSING, SUBSTANTIALLY ALONG THE AXIS OF THE BOREHOLE, A SORCE OF PENETRATIVE RADIATION FROM WHICH PRIMARY RADIATION PASSES OUTWARDLY INTO THE HOLE AND INTO THE FORMATIONS SURROUNDING THE HOLE TO IN INDUCE SECONDARY RADIATION THEREIN, CONTINUOUSLY DETECTING AND MESURING THE INTENSITY OF SAID SECONDARY RADIATION PASSING TOWARDS THE BOREHOLE AXIS AT TWO PREDETERMINED ANGLES WITH RESPECT TO SAID AXIS, AND DETERMINING THE RATIO OF THE QUANTITIES OF SECONDARY RADIATION AT EACH OF SAID ANGLES.
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |