US4247430A
Expired / Lapsed
US
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Aqueous based slurry and method of forming a consolidated gravel pack
Assignee: Schlumberger Technology Corp
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Filing: 1979-04-11
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Granted: 1981-01-27
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Expires: 1999-04-11
Abstract
Abstract An aqueous based slurry is described comprising (1) a thickened water-based carrying fluid, (2) a particulate solid, e.g., gravel, and (3) a resin system comprising an epoxy resin and a novel crosslinking agent. The cross-linking agent is a polymethylene polyphenylamine bearing one or more silane groups of the formula --CH.sub.2 CH(OH)CH.sub.2 O--C.sub.3 -C.sub.6 alkylene --Si(OR').sub.3, wherein each R' independently is hydrogen or lower alkyl. This pumpable slurry is suitable for use in emplacing a permeable, consolidated gravel pack between the casing of a well and an incompetent subterranean formation. The slurry is easily formed on site by merely blending the components in an appropriate ratio using conventional equipment.
Inventors
- 👤 Vernon G. Constien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/14; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4085; C09; C09K; C09K8/00; C09K8/56; C09K8/57; C09K8/575; C09K8/5751; C09K8/5755
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
47 words
A compound corresponding to the formula ##STR10## wherein m is from 0 to about 10; each R independently is H or Y provided that at least one R is Y; and Y is --CH.sub.2 CH(OH)CH.sub.2 O--C.sub.3 -C.sub.6 alkylene--Si(OR').sub.3 and each R' independently is hydrogen or lower alkyl.
Claim 2
Dependent Claim
47 words
A compound corresponding to the formula ##STR10## wherein m is from 0 to about 10; each R independently is H or Y provided that at least one R is Y; and Y is --CH.sub.2 CH(OH)CH.sub.2 O--C.sub.3 -C.sub.6 alkylene--Si(OR').sub.3 and each R' independently is hydrogen or lower alkyl.
Claim 3
Dependent Claim
15 words
The compound defined by claim 1 wherein Y is --CH.sub.2 CH(OH)CH.sub.2 O--CH.sub.2 CH.sub.2 CH.sub.2 --Si(OR').sub.3.
Claim 4
Dependent Claim
18 words
The compound defined by claim 1 or claim 2 wherein each R' independently is hydrogen, methyl or ethyl.
Claim 5
Dependent Claim
14 words
The compound defined by claim 3 wherein m is from 0 to about 4.
Claim 6
Dependent Claim
66 words
A composition comprising (A) a compound corresponding to the formula ##STR11## wherein m is from 0 to about 10; each R independently is H or Y provided that at least one R is Y; and Y is --CH.sub.2 CH(OH)CH.sub.2 --C.sub.3 -C.sub.6 alkylene--Si(OR').sub.3 and each R' independently is hydrogen or lower alkyl, and (B) a compound corresponding to the formula ##STR12## wherein m has the aforesaid meaning.
Claim 7
Dependent Claim
66 words
A composition comprising (A) a compound corresponding to the formula ##STR11## wherein m is from 0 to about 10; each R independently is H or Y provided that at least one R is Y; and Y is --CH.sub.2 CH(OH)CH.sub.2 --C.sub.3 -C.sub.6 alkylene--Si(OR').sub.3 and each R' independently is hydrogen or lower alkyl, and (B) a compound corresponding to the formula ##STR12## wherein m has the aforesaid meaning.
Claim 8
Dependent Claim
32 words
A thermally curable composition comprising a cross-linking amount of the composition defined by claim 5 and (C) an epoxy resin having, on the average, more than one 1,2-epoxy group per resin molecule.
Claim 9
Dependent Claim
12 words
The composition defined by claim 6 additionally comprising (D) a particulate solid.
Claim 10
Dependent Claim
12 words
The composition defined by claim 7 wherein (D) is sand and/or gravel.
Claim 11
Dependent Claim
17 words
The composition defined by claim 8 wherein (D) is sand of uniform or substantially uniform particle size.
Claim 12
Dependent Claim
11 words
The composition defined by claim 6 wherein (D) is glass fiber.
Claim 13
Dependent Claim
22 words
A pumpable gravel pack slurry composition comprising the composition defined by claim 7, 8 or 9 and a thickened water-based carrying fluid.
Claim 14
Dependent Claim
54 words
In the method of emplacing a permeable consolidated gravel pack between the casing of a well and an incompetent subterranean formation by pumping a pumpable gravel pack slurry into position and letting said gravel pack cure in situ, the improvement comprising using the composition defined by claim 11 as the gravel pack slurry composition.
Claim 15
Dependent Claim
120 words
The method defined by claim 12 wherein said pumpable gravel pack slurry is formed by blending a thickened water-based carrying fluid with a particular solid, and adding a solution of an epoxy resin having, on the average, more than one vicinal 1,2-epoxy group per molecule and a solution of a composition comprising (A) a compound corresponding to the formula ##STR13## wherein m is from 0 to about 10; each R independently is H or Y provided that at least one R is Y; and Y is --CH 2 CH(OH)CH 2 --(C 3 -C 6 alkylene--Si(OR') 3 and each R' independently is hydrogen or lower alkyl, and (B) a compound corresponding to the formula ##STR14## wherein m has the foresaid meaning.
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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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |