US3368075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorine logging system comprising detecting 5.0 to 6.5 mev. gamma rays
Assignee: Atlantic Richfield Co
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Filing: 1965-08-04
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Granted: 1968-02-06
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Expires: 1985-08-04
Abstract
No abstract record available.
Inventors
- 👤 Dale H Reed
- 👤 Henry F Dunlap
- 👤 Thomas S Hutchinson
- 👤 Robert E Mccallum
- 👤 C Pritchett William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:19
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
AN IMPROVED METHOD FOR CONDUCTING CHLORINE LOGGING OPERATIONS WHEREBY SALT WATER CAN BE DISTINGUISHED FROM OIL DEPOSITS UNDER VARYING CONDITIONS COMPRISING, (A) IRRADIATING A SUBSURFACE FORMATION WITH FAST NEUTRONS, (B) DETECTING THE PROMPT CAPTURE GAMMA RAYS EMITTED BY SAID FORMATION IN RESPONSE TO SAID NEUTRONS, (C) ANALYZING THE ENERGY SPECTRUM OF SAID GAMMA RAYS TO DETERMINE PULSES WITHIN THE INTERVAL OF ABOUT 5.0 TO 6.5 MEV., (D) TRANSMITTING SAID PULSES UPHOLE, AND (E) RECORDING SAID PULSES AS THE EXCLUSIVE INDICATION OF CHLORINE IN SAID FORMATION.
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) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |