US3743019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand control method
Assignee: Halliburton Co
•
Filing: 1972-04-10
•
Granted: 1973-07-03
•
Expires: 1992-04-10
Abstract
Abstract The present invention relates to a method of controlling loose sands and the like in a subterranean earth formation wherein an acid curable resin composition is cured within the formation by contact with an acyl halide hardening agent thereby consolidating the loose sands into a hard permeable mass.
Inventors
- 👤 K Totty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56; C09K8/565
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
54 words
The method of claim 1 wherein said overflush solution is a liquid aromatic or aliphatic hydrocarbon and said acyl halide hardening agent has a solubility at 25*C in said liquid hydrocarbon of at least about 0.005 parts by weight of said acyl halide hardening agent per 100 parts by weight of said liquid hydrocarbon.
Claim 2
Dependent Claim
58 words
The method of claim 2 wherein said acid curable composition is selected from the group consisting of a mixture of urea formaldehyde resin and furfuryl alcohol, a mixture of phenol formaldehyde resin and furfuryl alcohol and a mixture of furfuryl alcohol resin and furfuryl alcohol, said composition having a viscosity at 25*C of less than about 100 cps.
Claim 3
Dependent Claim
27 words
The method of claim 3 wherein said overflush solution is an aliphatic hydrocarbon having a viscosity at 25*C within the range of 1 to about 100 cps.
Claim 4
Dependent Claim
44 words
The method of claim 4 wherein said acyl halide hardening agent is present in the aliphatic hydrocarbon within the range of about 0.005 to about 25 parts by weight of said acyl halide hardening agent per 100 parts by weight of said aliphatic hydrocarbon.
Claim 5
Independent Claim
101 words
A method of controlling loose sands and the like in a subterranean formation comprising the steps of: introducing an acid curable resin or resin forming composition into said loose sands and the like; and thereafter introducing an overflush solution comprising a liquid aliphatic or aromatic hydrocarbon having dissolved therein an acid forming hardening agent into said loose sands and the like so that said resin composition is cured and said loose sands and the like are consolidated into a hard permeable mass, said acid forming hardening agent being selected from the group consisting of: an acyl halide having the general formula
Claim 6
Dependent Claim
58 words
The method of claim 6 wherein said acid curable composition is selected from the group consisting of a mixture of urea formaldehyde resin and furfuryl alcohol, a mixture of phenol formaldehyde resin anD furfuryl alcohol and a mixture of furfuryl alcohol resin and furfuryl alcohol, said composition having a viscosity at 25*C of less than about 100 cps.
Claim 7
Dependent Claim
58 words
The method of claim 7 wherein said overflush solution comprises an aliphatic hydrocarbon having a viscosity at 25*C within the range of 1 to about 100 cps and having dissolved therein within the range of about 0.005 to about 25 parts by weight of said acyl halide hardening agent per 100 parts by weight of said aliphatic hydrocarbon.
Claim 8
Dependent Claim
12 words
The method of claim 8 wherein said acyl halide is acetyl chloride.
Claim 9
Dependent Claim
12 words
The method of claim 8 wherein said acyl halide is benzoyl chloride.
Claim 10
Dependent Claim
12 words
The method of claim 8 wherein said acyl halide is phthaloyl chloride.
Claim 11
Dependent Claim
12 words
The method of claim 8 wherein said acyl halide is glutaryl chloride.
Claim 12
Dependent Claim
12 words
The method of claim 8 wherein said acyl halide is fumaryl chloride.
Claim 13
Independent Claim
99 words
A method of controlling loose sands and the like in a subterranean earth formation comprising the steps of: depositing against said loose sands and the like a quantity of particulated solids coated with an acid curable resin or resin forming composition; and thereafter introducing an overflush solution containing an acid forming hardening agent into said particulated solids so that said resin composition is cured and said particulated solids are consolidated into a hard fluid permeable but sand impermeable mass, said acid forming hardening agent being selected from the group consisting of: an acyl halide compound having the general formula
Claim 14
Dependent Claim
54 words
The method of claim 14 wherein the overflush solution is a liquid aromatic or aliphatic hydrocarbon and the acyl halide hardening agent has a solubility at 25*C in the liquid hydrocarbon of at least about 0.005 parts by weight of said acyl halide hardening agent per 100 parts by weight of said liquid hydrocarbon.
Claim 15
Dependent Claim
58 words
The method of claim 15 wherein said acid curable composition is selected from the group consisting of a mixture of urea formaldehyde resin and furfuryl alcohol, a mixture of phenol formaldehyde resin and furfuryl alcohol and a mixture of furfuryl alcohol resin and furfuryl alcohol, said composition having a viscosity at 25*C of less than about 100 cps.
Claim 16
Dependent Claim
27 words
The method of claim 16 wherein said overflush solution is an aliphatic hydrocarbon having a viscosity at 25*C within the range of 1 to about 100 cps.
Claim 17
Dependent Claim
44 words
The method of claim 17 wherein said acyl halide hardening agent is present in the aliphatic hydrocarbon within the range of about 0.005 to about 25 parts by weight of said acyl halide hardening agent per 100 parts by weight of said aliphatic hydrocarbon.
Claim 18
Independent Claim
106 words
A method of controlling loose sands and the like in a subterranean formation comprising the steps of: depositing against said loose sands and the like a quantity of particulated solids coated with an acid curable resin or resin forming composition; and thereafter introducing an overflush solution comprising a liquid aliphatic or aromatic hydrocarbon having dissolved therein an acid forming hardening agent into said particulated solids so that said resin composition is cured and said particulated solids are consolidated into a hard fluid permeable but sand impermeable mass, said acid forming hardening agent being selected from the group consisting of: an acyl halide having the general formula
Claim 19
Dependent Claim
58 words
The method of claim 19 wherein said acid curable composition is selected from the group consisting of a mixture of urea formaldehyde resin and furfuryl alcohol, a mixture of phenol formaldehyde resin and furfuryl alcohol and a mixture of furfuryl alcohol resin and furfuryl alcohol, said composition having a viscosity at 25*C of less than about 100 cps.
Claim 20
Dependent Claim
58 words
The method of claim 20 wherein said overflush solution comprises an aliphatic hydrocarbon having a viscosity at 25*C within the range of 1 to about 100 cps and having dissolved therein within the range of about 0.005 to about 25 parts by weight of said acyl halide hardening agent per 100 parts by weight of said aliphatic hydrocarbon.
Claim 21
Dependent Claim
12 words
The method of claim 21 wherein said acyl halide is acetyl chloride.
Claim 22
Dependent Claim
12 words
The method of claim 21 wherein said acyl halide is benzoyl chloride.
Claim 23
Dependent Claim
12 words
The method of claim 21 wherein said acyl halide is pHthaloyl chloride.
Claim 24
Dependent Claim
12 words
The method of claim 21 wherein said acyl halide is glutaryl chloride.
Claim 25
Dependent Claim
12 words
The method of claim 21 wherein said acyl halide is fumaryl chloride.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |