US2859822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for sealing permeable formations
Assignee: Pan American Petroleum Corp
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Filing: 1957-04-25
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Granted: 1958-11-11
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Expires: 1977-04-25
Abstract
No abstract record available.
Inventors
- 👤 James M Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:53
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/92; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
A COMPOSITION SUITABLE FOR TEMPORARILY SEALING FLOW CHANNELS IN AN OIL-PRODUCING FOR<MATION PENETRATED BY A WELL COMPRISING A CARRIER LIQUID HAVING DISPERSED THEREIN SOLID HEXACHLOROCYCLOHEXANE, SAID CARRIER LIQUID HAVING A VISCOSITY OF AT LEAST ABOUT 30 CENTIPOISES TO SUPPORT SAID SOLID HEXACHLOROCYCLOHEXANE, AND SAID HEXACHLOROCYCLOHEXANE HAVING A PARTICLE SIZE DISTRIBUTION IN WHICH 0 TO ABOUT 75 PERCENT OF THE PARTICLES ARE IN THE RANGE PASSING A NUMBER 4 SIEVE AND RETAINABLE ON A NUMBER 10 SIEVE, FROM ABOUT 15 TO 90 PERCENT ARE IN THE RANGE PASSING A NUMBER 10 SIEVE AND RETAINABLE ON A NUMBER 40 SIEVE, AND FROPM ABOUT 10 TO ABOUT 80 PERCENT ARE IN THE RANGE PASSING A NUMBER 410 SIEVE AND RETAINABLE ON A NUMBER 100 SIEVE.
Claim 2
Dependent Claim
122 words
A COMPOSITION SUITABLE FOR TEMPORARILY SEALING FLOW CHANNELS IN AN OIL-PRODUCING FOR<MATION PENETRATED BY A WELL COMPRISING A CARRIER LIQUID HAVING DISPERSED THEREIN SOLID HEXACHLOROCYCLOHEXANE, SAID CARRIER LIQUID HAVING A VISCOSITY OF AT LEAST ABOUT 30 CENTIPOISES TO SUPPORT SAID SOLID HEXACHLOROCYCLOHEXANE, AND SAID HEXACHLOROCYCLOHEXANE HAVING A PARTICLE SIZE DISTRIBUTION IN WHICH 0 TO ABOUT 75 PERCENT OF THE PARTICLES ARE IN THE RANGE PASSING A NUMBER 4 SIEVE AND RETAINABLE ON A NUMBER 10 SIEVE, FROM ABOUT 15 TO 90 PERCENT ARE IN THE RANGE PASSING A NUMBER 10 SIEVE AND RETAINABLE ON A NUMBER 40 SIEVE, AND FROPM ABOUT 10 TO ABOUT 80 PERCENT ARE IN THE RANGE PASSING A NUMBER 410 SIEVE AND RETAINABLE ON A NUMBER 100 SIEVE.
Claim 3
Dependent Claim
13 words
THE COMPOSITION OF CLAIM 1 IN WHICH THE SAID CARRIER LIQUID IS WATER.
References Cited (Backward Citations)
US2734861A
Cited
US2761805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |