US2952019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for investigating materials
Assignee: Schlumberger Well Surveying Corp
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Filing: 1958-12-19
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Granted: 1960-09-06
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Expires: 1978-12-19
Abstract
No abstract record available.
Inventors
- 👤 Goodman Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
APPARATUS FOR INVESTIGATING EARTH FORMATION TRAVERSED BY A BOREHOLE COMPRISING: A SUPPORT ADAPTED TO BE PASSED THROUGH THE BOREHOLE, A CONTROLLABLE NUCLEAR CHAIN REACTOR CARRIED BY SAID SUPPORT AND INCLUDING A SUBERITICAL MASS ADAPTED TO BE INFLUENCED BY A CONSTITUENT OF THE EARTH FORMATIONS UNDER INVESTIGATION, MEANS FOR SUPPLYING RADIANT ENERGY TO SAID SUBCRITICAL MASS SELECTIVELY TO INITIATE AND MAINTAIN A NUCLEAR CHAIN REACTION FOR IRRADIATING THE EARTH FORMATION, A CONTROL MECHANISM TO CONTROL THE AMOUNT OF RADIANT ENERGY SUPPLIED BY SAID SUPPLY MEANS TO SAID SUBCRITICAL MASS AND TO CAUSE SAID SUBCRITICAL MASS TO REACT AT A PREDETERMINED POWER LEVEL REGARDLESS OF THE EARTH FORMATIONS SURROUNDING SAID BOREHOLE, SAID REACTOR BEING SUBSTANTIALLY SURROUNDED BY A NEUTRON REFLECTOR HAVING AT LEAST ONE WINDOW PORTION THEREIN, MEANS TO URGE ONE OF SAID WINDOW PORTIONS AGAINST A SIDEWALL OF SAID BOREHOLE TO IRRADIATE THE EARTH FORMATIONS ADJACENT SAID WINDOW PORTION WITH NEUTRONS, AND RADIATION DETECTING MEANS FOR DETECTING RADIATIONS
Claim 2
Dependent Claim
157 words
APPARATUS FOR INVESTIGATING EARTH FORMATION TRAVERSED BY A BOREHOLE COMPRISING: A SUPPORT ADAPTED TO BE PASSED THROUGH THE BOREHOLE, A CONTROLLABLE NUCLEAR CHAIN REACTOR CARRIED BY SAID SUPPORT AND INCLUDING A SUBERITICAL MASS ADAPTED TO BE INFLUENCED BY A CONSTITUENT OF THE EARTH FORMATIONS UNDER INVESTIGATION, MEANS FOR SUPPLYING RADIANT ENERGY TO SAID SUBCRITICAL MASS SELECTIVELY TO INITIATE AND MAINTAIN A NUCLEAR CHAIN REACTION FOR IRRADIATING THE EARTH FORMATION, A CONTROL MECHANISM TO CONTROL THE AMOUNT OF RADIANT ENERGY SUPPLIED BY SAID SUPPLY MEANS TO SAID SUBCRITICAL MASS AND TO CAUSE SAID SUBCRITICAL MASS TO REACT AT A PREDETERMINED POWER LEVEL REGARDLESS OF THE EARTH FORMATIONS SURROUNDING SAID BOREHOLE, SAID REACTOR BEING SUBSTANTIALLY SURROUNDED BY A NEUTRON REFLECTOR HAVING AT LEAST ONE WINDOW PORTION THEREIN, MEANS TO URGE ONE OF SAID WINDOW PORTIONS AGAINST A SIDEWALL OF SAID BOREHOLE TO IRRADIATE THE EARTH FORMATIONS ADJACENT SAID WINDOW PORTION WITH NEUTRONS, AND RADIATION DETECTING MEANS FOR DETECTING RADIATIONS
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |