US3353600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for plugging perforations
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1966-02-10
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Granted: 1967-11-21
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Expires: 1986-02-10
Abstract
No abstract record available.
Inventors
- 👤 Max R Annis
- 👤 Jr Fred A Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD FOR THE TEMPORARY PLUGGING OF PERFORATIONS OR SIMILAR OPENINGS IN AN OIL OR GAS WELL WHICH COMPRISES: (A) ADDING GRADED PARTICLES OF A DISSOLVABLE SOLID PLUGGING AGENT TO A TEMPERATURE-SENSITIVE, TIME-BREAKING OIL-IN-WATER EMULSION OF SUFFICIENT VISCOSITY TO SUSPEND SAID PARTICLES, SAID EMULSION BEING STABLE AT NORMAL ATMOSPHERIC TEMPERATURES AND HAVING A PREDETERMINED BREAKING TIME AT THE FORMATION TEMPERATURE IN SAID WELL; (B) INJECTING SAID EMULSION CONTAINING THE SUSPENDED PARTICLES INTO SAID WELL IN A QUANTITY SUFFICIENT TO PLUG THE PERFORATIONS OR OTHER OPENINGS THEREIN; AND (C) THEREAFTER INJECTING A LIQUID IN WHICH SAID PARTICLES ARE SOLUBLE INTO SAID WELL IN A QUANTITY SUFFICIENT TO DISSOLVE THE PARTICLES PLUGGING SAID PERFORATIONS OR OTHER OPENINGS AFTER SUFFICIENT TIME FOR THE BREAKING OF SAID EMULSION HAS ELAPSED.
Claim 2
Independent Claim
126 words
A METHOD FOR THE TEMPORARY PLUGGING OF PERFORATIONS OR SIMILAR OPENINGS IN AN OIL OR GAS WELL WHICH COMPRISES: (A) ADDING GRADED PARTICLES OF A DISSOLVABLE SOLID PLUGGING AGENT TO A TEMPERATURE-SENSITIVE, TIME-BREAKING OIL-IN-WATER EMULSION OF SUFFICIENT VISCOSITY TO SUSPEND SAID PARTICLES, SAID EMULSION BEING STABLE AT NORMAL ATMOSPHERIC TEMPERATURES AND HAVING A PREDETERMINED BREAKING TIME AT THE FORMATION TEMPERATURE IN SAID WELL; (B) INJECTING SAID EMULSION CONTAINING THE SUSPENDED PARTICLES INTO SAID WELL IN A QUANTITY SUFFICIENT TO PLUG THE PERFORATIONS OR OTHER OPENINGS THEREIN; AND (C) THEREAFTER INJECTING A LIQUID IN WHICH SAID PARTICLES ARE SOLUBLE INTO SAID WELL IN A QUANTITY SUFFICIENT TO DISSOLVE THE PARTICLES PLUGGING SAID PERFORATIONS OR OTHER OPENINGS AFTER SUFFICIENT TIME FOR THE BREAKING OF SAID EMULSION HAS ELAPSED.
References Cited (Backward Citations)
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US2681889A
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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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |