17-10-2019 дата публикации
Номер: US20190316030A1
Принадлежит:
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. 1. 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; andb. 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.2. The composition of claim 1 , wherein component (b) comprises from about 1% wt to about 25% wt of the clay inhibitor composition.3. The composition of claim 1 , wherein component (b) comprises from about 5% wt to about 10% wt of the clay inhibitor composition.4. The composition of claim 1 , wherein the maleated fatty acid material is maleated tall oil fatty acid.5. The composition of claim 1 , wherein the maleated tall oil fatty acid comprises about 30% linoleic acid.6. The composition of claim 1 , wherein component (b) comprises at least one of amine HST claim 1 , amine DCT or a combination thereof.7. 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 claim 1 , wherein the drilling fluid comprises an ...
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