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US3158209A
Expired / Lapsed
US
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Method of sampling underground formations
Assignee: Jersey Production Research Co
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Filing: 1962-07-30
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Granted: 1964-11-24
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Julius P Gallus
- 👤 Gerald D Ortloff
- 👤 Bertram T William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:43
CPC Classifications
E; E21; E21B; E21B49/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A METHOD FOR RECOVERING A SAMPLE OF ESSENTIALLY UNALTERED FLUID CONTENT FROM A SUBTERRANEAN STRATUM PENETRATED BY A BOREHOLE WHICH COMPRISES AT LEAST PARTIALLY FILLING SAID BOREHOLE WITH A NON-INVADING FLUID, SUBSTANTIALLY INSTANTANEOUSLY SEPARATING A PLURALITY OF FRAGMENTS FROM A REGION OF SAID STRATUM ADJACENT SAID BOREHOLE, WHEREBY THE RESULTING FRAGMENTS ARE IMMEDIATELY SEALED BY EXPOSURE TO SAID FLUID, AND THEN RAISING AT LEAST ONE OF SAID FRAGMENTS TO THE EARTH''S SURFACE WHILE MAINTAINING A PRESSURE THEREON WHICH IS NOT SUBSTANTIALLY LESS THAN THE NATURAL PRESSURE OF SAID STRATUM.
References Cited (Backward Citations)
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US2264449A
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US2880969A
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US3064742A
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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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |