Suspensions for enhanced hydrocarbon recovery, and methods of recovering hydrocarbons using the suspensions

Patent metadata

Field	Value
Publication number	US-2016376492-A1
Application number	US-201414519496-A
Country	US
Kind code	A1
Filing date	Oct 21, 2014
Priority date	Oct 21, 2014
Publication date	Dec 29, 2016
Grant date	—

Abstract

Suspensions comprising polyhedral oligomeric silsesquioxane nanoparticles and at least one carrier fluid. The polyhedral oligomeric silsesquioxane may include functional groups and the suspension may further comprise carbon-based nanoparticles and silica nanoparticles. Methods of recovering hydrocarbons from a subterranean formation using the suspension are disclosed. The method comprises contacting hydrocarbons with the suspension to form an emulsion stabilized by the polyhedral oligomeric silsesquioxane nanoparticles.

First claim

What is claimed is:

1 . A method of recovering a hydrocarbon material, the method comprising:
forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles; introducing the suspension into a subterranean formation containing hydrocarbons; forming a stabilized emulsion of the suspension and the hydrocarbons within the subterranean formation; and removing the emulsion from the subterranean formation.

2 . The method of claim 1 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles comprises forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles including at least one amine functional group.

3 . The method of claim 1 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles comprises forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles including at least one functional group selected from the group consisting of an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, an alkaryl group, a lactone group, a carbonyl group, an epoxy group, a halide group, an organohalide group, a hydroxyl group, an azo group, an imide group, an amine group, an amide group, an imime group, a nitrate group, a nitroso group, a nitro group, a pyridyl group, a hydrozone group, an azide group, an azo group, a carboxyamide group, a cyanate group, an isocyanate group, a quaternary ammonium group, a quaternary phosphonium group, a tertiary sulphonium group, an organosulfur group, imidazolium groups, and polyethylenimine (PEI) groups.

4 . The method of claim 1 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles comprises forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles and at least one of fumed silica, functionalized graphene, and functionalized carbon nanotubes.

5 . The method of claim 1 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles comprises forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles bonded to at least one carbon-based nanoparticle.

6 . The method of claim 5 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles bonded to at least one carbon-based nanoparticle comprises forming at least one anionic functional group on the polyhedral oligomeric silsesquioxane nanoparticles and forming at least one cationic functional group on the at least one carbon-based nanoparticle and forming an ionic bond between the carbon-based nanoparticle and at least one of the polyhedral oligomeric silsesquioxane nanoparticles.

7 . The method of claim 1 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles comprises forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles coated with functionalized graphene.

8 . The method of claim 1 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles comprises forming a suspension comprising at least one of graphene oxide, graphene, and carbon nanotubes coated with the polyhedral oligomeric silsesquioxane nanoparticles.

9 . The method of claim 1 , wherein forming a suspension comprising polyhedral oligomeric silsesquioxane nanoparticles comprises forming a suspension comprising a first portion of nanoparticles with at least one type of functional group and at least a second portion of nanoparticles with at least another type of functional group.

10 . The method of claim 1 , wherein forming a stabilized emulsion of the suspension and the hydrocarbons within the subterranean formation comprises contacting the hydrocarbons with the polyhedral oligomeric silsesquioxane nanoparticles.

11 . A method of extracting a hydrocarbon material from a subterranean formation, the method comprising:
mixing polyhedral oligomeric silsesquioxane nanoparticles with a carrier fluid; introducing the carrier fluid into a subterranean formation and contacting hydrocarbons within the subterranean formation with the nanoparticles to form an emulsion comprising the nanoparticles, an aqueous phase, and a hydrocarbon phase dispersed within the aqueous phase; transporting the emulsion to a surface of the subterranean formation; and separating the hydrocarbons from the emulsion.

12 . The method of claim 11 , wherein mixing polyhedral oligomeric silsesquioxane nanoparticles with a carrier fluid comprises mixing polyhedral oligomeric silsesquioxane nanoparticles bonded with at least one of graphene nanoparticles and carbon nanotubes with the carrier fluid.

13 . The method of claim 11 , further comprising mixing fumed silica with the carrier

14 . The method of claim 11 , wherein mixing polyhedral oligomeric silsesquioxane nanoparticles with a carrier fluid comprises mixing the polyhedral oligomeric silsesquioxane nanoparticles with at least one of water, brine, steam, hexane, heptane, toluene, and benzene.

15 . The method of claim 11 , wherein mixing polyhedral oligomeric silsesquioxane nanoparticles with a carrier fluid comprises mixing polyhedral oligomeric silsesquioxane nanoparticles having a first functional group with fumed silica haying a second, different functional group than the first functional group.

16 . The method of claim 11 , wherein separating the hydrocarbons from the emulsion comprises decreasing a pH of the emulsion to separate the aqueous phase from the hydrocarbon phase.

17 . The method of claim 16 , further comprising recycling at least a portion of the aqueous phase including the polyhedral oligomeric silsesquioxane nanoparticles to the carrier fluid.

18 . A suspension for removing hydrocarbons from a subterranean formation, comprising:
a carrier fluid comprising at least one of water, brine, steam, and an organic solvent; polyhedral oligomeric silsesquioxane nanoparticles dispersed within the carrier fluid; and fumed silica nanoparticles dispersed within the carrier fluid.

19 . The suspension of claim 18 , wherein the polyhedral oligomeric silsesquioxane nanoparticles are attached to at least one of a carbon nanotube and graphene,

20 . The suspension of claim 18 , wherein the polyhedral oligomeric silsesquioxane nanoparticles include a first functional group and the fumed silica nanoparticles include a second functional group different than the first functional group.

Assignees

• Baker Hughes Inc

Inventors

• Chakraborty Soma
• Agrawal Gaurav
• Agrawal Devesh Kumar
• Khabashesku Valery N

Classifications

• E21B43/34

  Arrangements for separating materials produced by the well · CPC title

• C09K8/58 Primary

  Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids · CPC title

• E21B43/16

  Enhanced recovery methods for obtaining hydrocarbons · CPC title

• C09K8/592

  Compositions used in combination with generated heat, e.g. by steam injection · CPC title

• C09K2208/10

  Nanoparticle-containing well treatment fluids · CPC title