US4845134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelable compositions and use thereof in steam treatment of wells
Assignee: Phillips Petroleum Co
•
Filing: 1987-01-23
•
Granted: 1989-07-04
•
Expires: 2007-01-23
Abstract
Abstract A gelable composition is provided which can be injected into a well prior to steam treatment of the well. The composition comprises water, a water-dispersible polymer, a water-dispersible first crosslinker and a water-dispersible second crosslinker, wherein the first and second crosslinkers have differing temperature responsive crosslinking characteristics over the temperature range of about 70° F. to about 400° F. so as to enable crosslinking of the polymer and gelation of the composition over substantially the entire temperature range. Injection of the composition into a "cold" well followed by steam treatment of the well causes the polymer to undergo a two stage crosslinking reaction which produces a particularly effective and stable gel in diverting steam from "thief zones" in the formation surrounding the well.
Inventors
- 👤 Naim A. Mumallah
- 👤 Peter H. Doe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:01
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/887; C09K8/58; C09K8/592; Y; Y10; Y10S; Y10S507/00; Y10S507/902; Y10S507/903; Y10S507/935
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A composition consisting essentially of: water; a water-dispersible polymer in the amount of about 0.05 to about 10 weight percent and containing a monomer of the formula ##STR5## where each R 6 is selected from a hydrogen and an alkyl group having from 1 to 3 carbon atoms; resorcinol in the amount of about 0.01 to about 1 weight percent; phenol in the amount of about 0.02 to about 1 weight percent; and formaldehyde in the amount of about 0.05 to about 2 weight percent; wherein said composition is capable of gelation over substantially the entire temperature range of about 70° F. to about 400° F.
Claim 2
Dependent Claim
106 words
A composition consisting essentially of: water; a water-dispersible polymer in the amount of about 0.05 to about 10 weight percent and containing a monomer of the formula ##STR5## where each R 6 is selected from a hydrogen and an alkyl group having from 1 to 3 carbon atoms; resorcinol in the amount of about 0.01 to about 1 weight percent; phenol in the amount of about 0.02 to about 1 weight percent; and formaldehyde in the amount of about 0.05 to about 2 weight percent; wherein said composition is capable of gelation over substantially the entire temperature range of about 70° F. to about 400° F.
Claim 3
Dependent Claim
105 words
A composition consisting of: water; a water-dispersible polymer in the amount of about 0.05 to about 10 weight percent and containing a monomer of the formula ##STR6## where each R 6 is selected from a hydrogen and an alkyl group having from 1 to 3 carbon atoms; resorcinol in the amount of about 0.01 to about 1 weight percent; phenol in the amount of about 0.02 to about 1 weight percent; and formaldehyde in the amount of about 0.05 to about 2 weight percent; wherein said composition is capable of gelation over substantially the entire temperature range of about 70° F. to about 400° F.
Claim 4
Dependent Claim
105 words
A composition consisting of: water; a water-dispersible polymer in the amount of about 0.05 to about 10 weight percent and containing a monomer of the formula ##STR6## where each R 6 is selected from a hydrogen and an alkyl group having from 1 to 3 carbon atoms; resorcinol in the amount of about 0.01 to about 1 weight percent; phenol in the amount of about 0.02 to about 1 weight percent; and formaldehyde in the amount of about 0.05 to about 2 weight percent; wherein said composition is capable of gelation over substantially the entire temperature range of about 70° F. to about 400° F.
References Cited (Backward Citations)
US3028297A
Cited
US2978347A
Cited
US3993133A
Cited
US4039029A
Cited
US4191657A
Cited
US4240505A
Cited
US4244826A
Cited
US4246124A
Cited
US4250963A
Cited
US4300634A
Cited
US4389320A
Cited
US4482015A
Cited
US4460751A
Cited
US4524829A
Cited
US4552217A
Cited
US4635727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |