US3190355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well treating process
Assignee: Phillips Petroleum Co
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Filing: 1963-02-18
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Granted: 1965-06-22
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 Cecil R Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN AN OIL WELL WHEREIN UPPER AND LOWER STRATA HAVE BEEN PRODUCED AND THE LOWER STRATUM IS TO BE REWORKED INVOLVING HOLDING OF PRESSURE ON SAID LOWER STRATUM WITH DRILLING MUD, THE PROCESS COMPRISING THE STEPS OF: (1) PACKING OFF SAID WELL INTERMEDIATE SAID STRATA; (2) THEREAFTER, PLUGGING SAID UPPER STRATUM BY CIRCULATING DRILLING MUD CONTAINING PARTICULATE METAL IN SAID WELL ALONG SAID UPPER STRATUM TO DEPOSIT METAL AND MUD ON THE WALL OF THE STRATUM; (3) THEREAFTER, REMOVING THE PACKING OF STEP (1) AND REWORKING SAID LOWER STRATUM, INCLUDING MAINTAINING SUBSTANTIAL PRESSURE ON SAID LOWE RSTRATUM WITH DRILLING MUD IN SAID WELL; (4) THEREAFTER, AGAIN PACKING OFF SAID WELL INTERMEDIATE SAID STRATA; (5) THEREAFTER, RENDERING THE BRIDGING METAL FLUID SO AS TO UNPLUG SAID UPPER STRATUM; AND (6) OPENING SAID WELL TO RODUCTION FROM BOTH STRATA.
Claim 2
Dependent Claim
137 words
IN AN OIL WELL WHEREIN UPPER AND LOWER STRATA HAVE BEEN PRODUCED AND THE LOWER STRATUM IS TO BE REWORKED INVOLVING HOLDING OF PRESSURE ON SAID LOWER STRATUM WITH DRILLING MUD, THE PROCESS COMPRISING THE STEPS OF: (1) PACKING OFF SAID WELL INTERMEDIATE SAID STRATA; (2) THEREAFTER, PLUGGING SAID UPPER STRATUM BY CIRCULATING DRILLING MUD CONTAINING PARTICULATE METAL IN SAID WELL ALONG SAID UPPER STRATUM TO DEPOSIT METAL AND MUD ON THE WALL OF THE STRATUM; (3) THEREAFTER, REMOVING THE PACKING OF STEP (1) AND REWORKING SAID LOWER STRATUM, INCLUDING MAINTAINING SUBSTANTIAL PRESSURE ON SAID LOWE RSTRATUM WITH DRILLING MUD IN SAID WELL; (4) THEREAFTER, AGAIN PACKING OFF SAID WELL INTERMEDIATE SAID STRATA; (5) THEREAFTER, RENDERING THE BRIDGING METAL FLUID SO AS TO UNPLUG SAID UPPER STRATUM; AND (6) OPENING SAID WELL TO RODUCTION FROM BOTH STRATA.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |