US4497596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of minimizing fines migration in a subterranean formation
Assignee: Halliburton Co
•
Filing: 1983-03-24
•
Granted: 1985-02-05
•
Expires: 2003-03-24
Abstract
Abstract A method of stabilizing fines within a permeable subterranean formation comprising contacting the fines with an effective amount of an organic polycationic polymer which contain two quaternary ammonium moieties in the polymer repeating unit.
Inventors
- 👤 John K. Borchardt
- 👤 Bill M. Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:00
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56; C09K8/57; C09K8/575; C09K8/5751; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
208 words
A method of stabilizing fines within a permeable formation comprising contacting said fines with an effective amount of a polymer having repeating monomer units of the general formula: ##STR4## wherein R 1 is an alkyl group having from about 2 to about 5 carbon atoms, and preferably propyl; R 2 is an unsubstituted alkyl group having from about 2 to about 6 carbon atoms or a substituted alkyl group having from about 2 to about 6 carbon atoms and containing a hydroxy group or from about 1 to about 3 ether groups, and preferably 2-hydroxypropyl; X is an anion selected from the group consisting of chlorine, bromine, iodine, sulfate, hydroxyl, methyl sulfate and mixtures thereof; m is an integer equal to the number of anions required to maintain electronic neutrality; and, y is an integer equal to the number of monomer units in said polymer required to increase the viscosity of deionized water to from about 250 centipoises to about 10,000 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
Claim 2
Independent Claim
208 words
A method of stabilizing fines within a permeable formation comprising contacting said fines with an effective amount of a polymer having repeating monomer units of the general formula: ##STR4## wherein R 1 is an alkyl group having from about 2 to about 5 carbon atoms, and preferably propyl; R 2 is an unsubstituted alkyl group having from about 2 to about 6 carbon atoms or a substituted alkyl group having from about 2 to about 6 carbon atoms and containing a hydroxy group or from about 1 to about 3 ether groups, and preferably 2-hydroxypropyl; X is an anion selected from the group consisting of chlorine, bromine, iodine, sulfate, hydroxyl, methyl sulfate and mixtures thereof; m is an integer equal to the number of anions required to maintain electronic neutrality; and, y is an integer equal to the number of monomer units in said polymer required to increase the viscosity of deionized water to from about 250 centipoises to about 10,000 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
Claim 3
Dependent Claim
26 words
The method recited in claim 1 wherein said fines are selected from the group consisting of silica, iron minerals, alkaline earth metal carbonates, and mixtures thereof.
Claim 4
Dependent Claim
11 words
The method recited in claim 2 wherein R 1 is propyl.
Claim 5
Dependent Claim
11 words
The method recited in claim 3 wherein R 2 is 2-hydroxypropyl.
Claim 6
Dependent Claim
15 words
The method recited in claim 1 wherein said polymer is dispersed in a carrier fluid.
Claim 7
Dependent Claim
39 words
The method recited in claim 5 wherein said carrier fluid is aqueous and the concentration of said polymer in said carrier fluid is in the range of from about 0.01 to about 5.0% by volume of said carrier fluid.
Claim 8
Dependent Claim
48 words
The method recited in claim 6 wherein said aqueous carrier fluid is a saline solution containing up to 40% by weight of salt wherein said salt is selected from the group consisting of an alkali metal, an alkaline earth metal and ammonium halides, sulfates, carbonates, and mixtures thereof.
Claim 9
Dependent Claim
79 words
The method recited in claim 1 wherein y is an integer equal to the number of monomer units of said polymer required to increase the viscosity of deionized water to about 5,600 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
Claim 10
Dependent Claim
13 words
The method recited in claim 8 wherein said organic cationic polymer is: ##STR5##
Claim 11
Dependent Claim
37 words
The method recited in claim 6 wherein the carrier fluid contains from about 0.1 to about 40% by weight of an acid selected from the group consisting of hydrochloric, hydrofluoric, acetic, formic, citric acid and mixtures thereof.
Claim 12
Dependent Claim
10 words
The method recited in claim 1 wherein X is chlorine.
Claim 13
Independent Claim
208 words
A method of stabilizing fines within a consolidated structure comprising contacting said fines with an effective amount of a polymer having repeating monomer units of the general formula: ##STR6## wherein R 1 is an alkyl group having from about 2 to about 5 carbon atoms, and preferably propyl; R 2 is an unsubstituted alkyl group having from about 2 to about 6 carbon atoms or a substituted alkyl group having from about 2 to about 6 carbon atoms and containing a hydroxy group or from about 1 to about 3 ether groups, and preferably 2-hydroxypropyl; X is an anion selected from the group consisting of chlorine, bromine, iodine, sulfate, hydroxyl, methyl sulfate and mixtures thereof; m is an integer equal to the number of anions required to maintain electronic neutrality; and, y is an integer equal to the number of monomer units of said polymer required to increase the viscosity of deionized water to from about 250 centipoises to about 10,000 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
Claim 14
Independent Claim
208 words
A method of stabilizing fines within a consolidated structure comprising contacting said fines with an effective amount of a polymer having repeating monomer units of the general formula: ##STR6## wherein R 1 is an alkyl group having from about 2 to about 5 carbon atoms, and preferably propyl; R 2 is an unsubstituted alkyl group having from about 2 to about 6 carbon atoms or a substituted alkyl group having from about 2 to about 6 carbon atoms and containing a hydroxy group or from about 1 to about 3 ether groups, and preferably 2-hydroxypropyl; X is an anion selected from the group consisting of chlorine, bromine, iodine, sulfate, hydroxyl, methyl sulfate and mixtures thereof; m is an integer equal to the number of anions required to maintain electronic neutrality; and, y is an integer equal to the number of monomer units of said polymer required to increase the viscosity of deionized water to from about 250 centipoises to about 10,000 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
Claim 15
Dependent Claim
26 words
The method recited in claim 12 wherein said fines are selected from the group consisting of silica, iron minerals, alkaline earth metal carbonates, and mixtures thereof.
Claim 16
Dependent Claim
15 words
The method recited in claim 13 wherein said polymer is dispersed in a carrier fluid.
Claim 17
Dependent Claim
39 words
The method recited in claim 14 wherein said carrier fluid is aqueous and the concentration of said polymer in said carrier fluid is in the range of from about 0.01 to about 5.0% by volume of said carrier fluid.
Claim 18
Dependent Claim
48 words
The method recited in claim 15 wherein said aqueous carrier fluid is a saline solution containing up to 40% by weight of salt wherein said salt is selected from the group consisting of an alkali metal, an alkaline earth metal and ammonium halides, sulfates, carbonates, and mixtures thereof.
Claim 19
Dependent Claim
79 words
The method recited in claim 16 wherein y is an integer equal to the number of monomer units of said polymer required to increase the viscosity of deionized water to about 5,600 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
Claim 20
Dependent Claim
13 words
The method recited in claim 17 wherein said organic cationic polymer is: ##STR7##
Claim 21
Dependent Claim
37 words
The method recited in claim 18 wherein the carrier fluid contains from about 0.1 to about 40% by weight of an acid selected from the group consisting of hydrochloric, hydrofluoric, acetic, formic, citric acid and mixtures thereof.
Claim 22
Independent Claim
143 words
A method of stabilizing loose silica fines having a diameter of less than 10 microns in a permeable mass having a temperature from about 76° F. to about 560° F. comprising contacting said fines with an effective amount of a polymer having repeating monomer units of the general formula: ##STR8## m is an integer equal to the number of anions required to maintain electronic neutrality; and, y is an integer equal to the number of monomer units of said polymer required to increase the viscosity of deionized water to from about 250 centipoises to about 10,000 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
Claim 23
Independent Claim
143 words
A method of stabilizing loose silica fines having a diameter of less than 10 microns in a permeable mass having a temperature from about 76° F. to about 560° F. comprising contacting said fines with an effective amount of a polymer having repeating monomer units of the general formula: ##STR8## m is an integer equal to the number of anions required to maintain electronic neutrality; and, y is an integer equal to the number of monomer units of said polymer required to increase the viscosity of deionized water to from about 250 centipoises to about 10,000 centipoises said viscosity of said polymer being measured by adding 40 grams of the polymer to 60 grams of deionized water to form a solution and measuring said viscosity of said solution on a Brookfield Model LVT viscometer, No. 3 spindle, 6 r.p.m. at about 76° F.
References Cited (Backward Citations)
US3057798A
Cited
US3349032A
Cited
US3494865A
Cited
US3434491A
Cited
US3419072A
Cited
US3562226A
Cited
US3704750A
Cited
US3827977A
Cited
US3832302A
Cited
US3868328A
Cited
US3794117A
Cited
US4062796A
Cited
US3927718A
Cited
US3943060A
Cited
US4079011A
Cited
US3962332A
Cited
US3916996A
Cited
US3916995A
Cited
US3916994A
Cited
US4055502A
Cited
US4366071A
Cited
US4366074A
Cited
US4366072A
Cited
US4366073A
Cited
US4374739A
Cited
US4200154A
Cited
US4200151A
Cited
US4206058A
Cited
US4152274A
Cited
US4158521A
Cited
US4393939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |