Patent US3115776A successfully refreshed from Google Patents.
US3115776A
Expired / Lapsed
US
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Method of formation testing in petroleum wells
Assignee: Individual
•
Filing: 1955-08-29
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Granted: 1963-12-31
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Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 William G Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:04
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/086; E21B49/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF TESTING POSSIBLE OIL PRODUCING FORMATIONS WITHIN A BOREHOLE TO DETECT THE POTENTIAL PRESENCE OF OIL, COMPRISING: LOWERING INTO SAID BOREHOLE AN INTERNALLY SEALED PIPE HAVING A CONTINUOUS INTERNAL DIAMETER EXPOSED TO AND ABOVE THE SURFACE OF THE BOREHOLE, PACKING THE BOREHOLE AROUND THE EXTERIOR OF SAID PIPE TO PREVENT ESCAPE OF ANY FLUID, BREAKING SAID SEAL, AND DISPLAYING AT THE SURFACE OF THE BOREHOLE THE PRESSURE CHANGE WITHIN SAID PIPE AT THE INSTANT THE SEAL IS BROKEN TO INDICATE IF OIL IS POTENTIALLY PRESENT IN SAID FORMATION.
Claim 2
Independent Claim
90 words
A METHOD OF TESTING POSSIBLE OIL PRODUCING FORMATIONS WITHIN A BOREHOLE TO DETECT THE POTENTIAL PRESENCE OF OIL, COMPRISING: LOWERING INTO SAID BOREHOLE AN INTERNALLY SEALED PIPE HAVING A CONTINUOUS INTERNAL DIAMETER EXPOSED TO AND ABOVE THE SURFACE OF THE BOREHOLE, PACKING THE BOREHOLE AROUND THE EXTERIOR OF SAID PIPE TO PREVENT ESCAPE OF ANY FLUID, BREAKING SAID SEAL, AND DISPLAYING AT THE SURFACE OF THE BOREHOLE THE PRESSURE CHANGE WITHIN SAID PIPE AT THE INSTANT THE SEAL IS BROKEN TO INDICATE IF OIL IS POTENTIALLY PRESENT IN SAID FORMATION.
References Cited (Backward Citations)
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US2611267A
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US2633594A
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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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |