US2585412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well productivity logging
Assignee: Stanolind Oil and Gas Co
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Filing: 1950-04-29
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Granted: 1952-02-12
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Expires: 1970-04-29
Abstract
No abstract record available.
Inventors
- 👤 Silverman Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:35
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD FOR DETERMINING THE LOCATION OF AN OIL-PRODUCING FORMATION IN A WELL CONTAINING BRINE COMPRISING INTRODUCING A BRINE-IMMISCIBLE SELECTIVE SOLVENT INTO SAID WELL TO A DEPTH ABOVE SAID FOR MATION, SAID SOLVENT BEING HEAVIER THAN SAID BRINE, PRODUCING AN INTERFACE THEREBETWEEN, AND FORMING WITH THE OIL FROM SAID FORMATION A SOLVENT-INOIL PHASE LIGHTER THAN SAID BRINE, PRODUCING SAID WELL TO CAUSE SAID FORMATION TO PRODUCE OIL INTO SAID WELL, AND AS SAID WELL IS PRODUCED LOCATING THE POSITION OF SAID INTERFACE WITH RESPECT TO A PARAMETER THAT VARIES AS THE AMOUNT OF OIL PRODUCED BY SAID WELL WHICH POSITION REPRESENTS A LOG OF SAID WELL WHEREBY SAID OIL-PRODUCING FORMATION MAY BE LOCATED.
Claim 2
Independent Claim
113 words
A METHOD FOR DETERMINING THE LOCATION OF AN OIL-PRODUCING FORMATION IN A WELL CONTAINING BRINE COMPRISING INTRODUCING A BRINE-IMMISCIBLE SELECTIVE SOLVENT INTO SAID WELL TO A DEPTH ABOVE SAID FOR MATION, SAID SOLVENT BEING HEAVIER THAN SAID BRINE, PRODUCING AN INTERFACE THEREBETWEEN, AND FORMING WITH THE OIL FROM SAID FORMATION A SOLVENT-INOIL PHASE LIGHTER THAN SAID BRINE, PRODUCING SAID WELL TO CAUSE SAID FORMATION TO PRODUCE OIL INTO SAID WELL, AND AS SAID WELL IS PRODUCED LOCATING THE POSITION OF SAID INTERFACE WITH RESPECT TO A PARAMETER THAT VARIES AS THE AMOUNT OF OIL PRODUCED BY SAID WELL WHICH POSITION REPRESENTS A LOG OF SAID WELL WHEREBY SAID OIL-PRODUCING FORMATION MAY BE LOCATED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |