Clay inhibitors for drilling, fracturing, and other procedures
AssigneeIngevity South Carolina, LLC
InventorMichael J. Skriba
Life of this patent
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Abstract
Reaction products produced by mixing a maleated tall oil fatty acid and/or a maleated soy oil fatty acid/DETA component with an amine or amine bottom preparation are used as clay inhibitors in drilling fluids and in hydraulic fracturing fluids for drilling wells and for fracturing subterranean formations, and are also used as clay inhibitors in other treatment fluids for treating wells or subterranean formations.
Claims19
A clay inhibitor composition for fluids used in drilling, fracturing, or treating wells and subterranean formations, said clay inhibitor comprising:
- a. a reaction product produced by reacting a maleated fatty acid material with diethylenetriamine (DETA), wherein said maleated fatty acid material is maleated tall oil fatty acid, maleated soy oil fatty acid, or combination thereof;
- and
- b. at least one amine selected from the group consisting of diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), heptaethyleneoctamine (HEOA), hexaethyleneheptamine (HEHA), amine HST, amine DCT, aminoethylpiperazine (AEP), dimethylaminopropylamine (DMAPA), aminoethylethanolamine (AEEA), diethanolamine (DEA), triethanolamine (TEA), and a combination thereof.
A method of drilling a well comprising the step of circulating a drilling fluid through a well bore as the well bore is being drilled, wherein the drilling fluid comprises an amount of a clay inhibitor effective to at least reduce clay swelling occurring in the well as the drilling fluid is circulated through the well bore, wherein the clay inhibitor comprises:
- a. a reaction product produced by reacting a maleated fatty acid material with diethylenetriamine (DETA), wherein said maleated fatty acid material is maleated tall oil fatty acid, maleated soy oil fatty acid, or combination thereof;
- and
- b. at least one amine selected from the group consisting of diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), heptaethyleneoctamine (HEOA), hexaethyleneheptamine (HEHA), amine HST, amine DCT, aminoethylpiperazine (AEP), dimethylaminopropylamine (DMAPA), aminoethylethanolamine (AEEA), diethanolamine (DEA), triethanolamine (TEA), and a combination thereof.
A method of fracturing a subterranean formation comprising injecting a fracturing fluid into the subterranean formation, wherein the fracturing fluid is effective to at least reduce clay swelling in the subterranean formation when the fracturing fluid is injected, wherein the fracturing fluid comprises:
- a. a reaction product produced by reacting a maleated fatty acid material with diethylenetriamine (DETA), wherein said maleated fatty acid material is maleated tall oil fatty acid, maleated soy oil fatty acid, or combination thereof;
- and
- b. at least one amine selected from the group consisting of diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), heptaethyleneoctamine (HEOA), hexaethyleneheptamine (HEHA), amine HST, amine DCT, aminoethylpiperazine (AEP), dimethylaminopropylamine (DMAPA), aminoethylethanolamine (AEEA), diethanolamine (DEA), triethanolamine (TEA), and a combination thereof.
A method of treating a well or subterranean formation comprising injecting into the well or subterranean formation a treatment fluid, wherein the treatment fluid is effective to at least reduce clay swelling in the well or subterranean formation when the treatment fluid is injected, and wherein the treatment fluid comprises:
- a. a reaction product produced by reacting a maleated fatty acid material with diethylenetriamine (DETA), wherein said maleated fatty acid material is maleated tall oil fatty acid, maleated soy oil fatty acid, or combination thereof;
- and
- b. at least one amine selected from the group consisting of diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), heptaethyleneoctamine (HEOA), hexaethyleneheptamine (HEHA), amine HST, amine DCT, aminoethylpiperazine (AEP), dimethylaminopropylamine (DMAPA), aminoethylethanolamine (AEEA), diethanolamine (DEA), triethanolamine (TEA), and a combination thereof.
Dependencies are inferred from the claim text.