Hydrophobic Surface Treatment For Use In Subterranean Formation Operations

Patent metadata

Field	Value
Publication number	US-2017190961-A1
Application number	US-201415312871-A
Country	US
Kind code	A1
Filing date	Aug 15, 2014
Priority date	Aug 15, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

Methods including preparing a silanization composition comprising an aqueous base fluid and an alkyltrialkoxysilane; coating the silanization composition at least partially onto proppant particulates, thereby forming coated proppant particulates, wherein the silanization composition imparts hydrophobicity to the proppant particulates; and introducing the coated proppant particulates into a subterranean formation. The alkyltrialkoxysilane in the silanization composition may have the formula R 1 (OR 2 ) 3 Si, where R 1 is a C 8 to C 22 alkyl chain and R 2 is an alkyl group selected from the group consisting of methyl, ethyl, butyl, tert-butyl, isopropyl, and any combination thereof.

First claim

1 . A method comprising:
preparing a silanization composition comprising an aqueous base fluid and an alkyltrialkoxysilane; coating the silanization composition at least partially onto proppant particulates, thereby forming coated proppant particulates,
wherein the silanization composition imparts hydrophobicity to the proppant particulates; and
introducing the coated proppant particulates into a subterranean formation.

2 . The method of claim 1 , wherein the alkyltrialkoxysilane has the formula R 1 (OR 2 ) 3 Si, where R 1 is a C 8 to C 22 alkyl chain and R 2 is an alkyl group selected from the group consisting of methyl, ethyl, butyl, tert-butyl, isopropyl, and any combination thereof.

3 . The method of claim 1 , wherein the alkyltrialkoxysilane is an organosilane selected from the group consisting of hexadecyltrimethoxysilane, isobutyl trimethoxysilane, propyl trimethoxysilane, propyl triethoxysilane, isopropyl trimethoxysilane, isopropyl triethoxysilane, butyl trimethoxysilane, butyl triethoxysilane, isobutyl triethoxysilane, sec butyl trimethoxysilane, sec butyl triethoxysilane, tert butyl trimethoxysilane, tert butyl triethoxysilane, trimethoxysilane, trimethoxymethylsilane, vinyltrimethoxysilane, trimethoxy(3,3,3-trifluoropropyl)silane, allyltrimethoxysilane, (3-bromopropyl)trimethoxysilane, (3-iodopropyl)trimethoxysilane, (3-mercaptopropyl)trimethoxysilane, triethoxysilane, trimethoxy(propyl)silane, (3-aminopropyl)trimethoxysilane, triethoxymethylsilane, trimethoxy[3-(methylamino)propyl]silane, triethoxyvinylsilane, triethoxy(ethyl)silane, [3-(2-aminoethylamino)propyl]trimethoxysilane, N-[3-(trimethoxysilyl)propyl]ethylenediamine, 1,2-bis(trimethoxysilyl)ethane, trimethoxyphenylsilane, allyltriethoxysilane, (3-glycidyloxypropyl)trimethoxysilane, (3-chloropropyl)triethoxysilane, (3-mercaptopropyl)triethoxysilane, n-propyltriethoxysilane, (3-aminopropyl)triethoxysilane, triethoxy-2-thienylsilane, 3-cyanopropyltriethoxysilane, chloromethyltriisopropoxysilane, methyl-tripropoxysilane, [3-(diethylamino)propyl]trimethoxysilane, trimethoxy(2-phenylethyl)silane, trimethoxy[2-(7-oxabicyclo[4.1.0]hept-3-yl)ethyl]silane, cyclopentyltriethoxysilane, trimethoxy(7-octen-1-yl)silane, isooctyl trimethoxysilane, trimethoxy(octyl)silane, (pentafluorophenyl)triethoxysilane, (4-chlorophenyl)triethoxysilane, triethoxyphenylsilane, (3-glycidyloxypropyl)triethoxysilane, (3-chloropropyl)tris(trimethylsiloxy)silane, tetrakis(trimethylsilyloxy)silane, triethoxy-p-tolylsilane, triethoxy(4-methoxyphenyl)silane, 1H,1H,2H,2H-perfluorooctyltriethoxysilane, triethoxy(1-phenylethenyl)silane, triethoxy(octyl)silane, dodecyltriethoxysilane, trimethoxy(octadecyl)silane, n-octadecyltriethoxysilane, methyltris(tri-sec-butoxysilyloxy)silane, and any combination thereof.

4 . The method of claim 1 , wherein the alkyltrialkoxysilane is present in the silanization composition in an amount in the range of from about 0.1% to about 10% by weight of the silanization composition.

5 . The method of claim 1 , wherein the proppant particulates are selected from the group consisting of natural sand, silica, sodium silicate, meta-silicate, calcium silicate, aluminum silicate, ceramic, sintered bauxite, and any combination thereof.

6 . The method of claim 1 , wherein the proppant particulates are pretreated with tetraethylorthosilicate prior to the step of coating the silanization composition at least partially onto proppant particulates.

7 . The method of claim 1 , wherein the coated proppant particulates are introduced into the subterranean formation in the silanization composition.

8 . The method of claim 1 , wherein the coated proppant particulates are introduced into the subterranean formation in a treatment fluid comprising a base fluid selected from the group consisting of an oil-based fluid, an aqueous-based fluid, an aqueous-miscible fluid, a water-in-oil emulsion, an oil-in-water emulsion, and any combination thereof.

9 . The method of claim 1 , further comprising a wellhead with a tubular extending therefrom and into the subterranean formation; and
a pump fluidly coupled to the tubular, wherein the step of introducing the coated proppant particulates into the subterranean formation comprises introducing the coated proppant particulates through the tubular.

10 . A method comprising:
preparing a silanization composition comprising an aqueous base fluid and an alkyltrialkoxysilane; coating the silanization composition at least partially onto a subterranean formation,
wherein the silanization composition imparts hydrophobicity to the subterranean formation.

11 . The method of claim 10 , wherein the step of coating the silanization composition at least partially onto the subterranean formation comprises coating the silanization onto at least a portion of a fracture face in the subterranean formation.

12 . The method of claim 10 , wherein the alkyltrialkoxysilane has the formula R 1 (OR 2 ) 3 Si, where R 1 is a C 8 to C 22 alkyl chain and R 2 is an alkyl group selected from the group consisting of methyl, ethyl, butyl, tert-butyl, isopropyl, and any combination thereof.

13 . The method of claim 10 , wherein the alkyltrialkoxysilane is an organosilane selected from the group consisting of hexadecyltrimethoxysilane, isobutyl trimethoxysilane, propyl trimethoxysilane, propyl triethoxysilane, isopropyl trimethoxysilane, isopropyl triethoxysilane, butyl trimethoxysilane, butyl triethoxysilane, isobutyl triethoxysilane, sec butyl trimethoxysilane, sec butyl triethoxysilane, tert butyl trimethoxysilane, tert butyl triethoxysilane, trimethoxysilane, trimethoxymethylsilane, vinyltrimethoxysilane, trimethoxy(3,3,3-trifluoropropyl)silane, allyltrimethoxysilane, (3-bromopropyl)trimethoxysilane, (3-iodopropyl)trimethoxysilane, (3-mercaptopropyl)trimethoxysilane, triethoxysilane, trimethoxy(propyl)silane, (3-aminopropyl)trimethoxysilane, triethoxymethylsilane, trimethoxy[3-(methylamino)propyl]silane, triethoxyvinylsilane, triethoxy(ethyl)silane, [3-(2-aminoethylamino)propyl]trimethoxysilane, N-[3-(trimethoxysilyl)propyl]ethylenediamine, 1,2-bis(trimethoxysilyl)ethane, trimethoxyphenylsilane, allyltriethoxysilane, (3-glycidyloxypropyl)trimethoxysilane, (3-chloropropyl)triethoxysilane, (3-mercaptopropyl)triethoxysilane, n-propyltriethoxysilane, (3-aminopropyl)triethoxysilane, triethoxy-2-thienylsilane, 3-cyanopropyltriethoxysilane, chloromethyltriisopropoxysilane, methyl-tripropoxysilane, [3-(diethylamino)propyl]trimethoxysilane, trimethoxy(2-phenylethyl)silane, trimethoxy[2-(7-oxabicyclo[4.1.0]hept-3-yl)ethyl]silane, cyclopentyltriethoxysilane, trimethoxy(7-octen-1-yl)silane, isooctyl trimethoxysilane, trimethoxy(octyl)silane, (pentafluorophenyl)triethoxysilane, (4-chlorophenyl)triethoxysilane, triethoxyphenylsilane, (3-glycidyloxypropyl)triethoxysilane, (3-chloropropyl)tris(trimethylsiloxy)silane, tetrakis(trimethylsilyloxy)silane, triethoxy-p-tolylsilane, triethoxy(4-methoxyphenyl)silane, 1H,1H,2H,2H-perfluorooctyltriethoxysilane, triethoxy(1-phenylethenyl)silane, triethoxy(octyl)silane, dodecyltriethoxysilane, trimethoxy(octadecyl)silane, n-octadecyltriethoxysilane, methyltris(tri-sec-butoxysilyloxy)silane, and any combination thereof.

14 . The method of claim 10 , wherein the alkyltrialkoxysilane is present in the silanization composition in an amount in the range of from about 0.1% to about 10% by weight of the silanization composition.

15 . The method of claim 10 , wherein the subterranean formation is pretreated with tetraethylorthosilicate prior to the step of coating the silanization composition at least partially onto the subterranean formation.

Assignees

• Halliburton Energy Services Inc

Inventors

• Nguyen Philip D
• Alwattari Ali

Classifications

• C09K8/805 Primary

  Coated proppants · CPC title

• E21B43/26

  by forming crevices or fractures · CPC title

• E21B43/267 Primary

  reinforcing fractures by propping · CPC title