Improved polymeric gel system and methods for making and...

Details Improved polymeric gel system and methods for making and... Improved polymeric gel system and methods for making and...

C - Chemistry, Metallurgy

08

J

C08J 3/075 (2006.01) C08K 5/521 (2006.01) C08L 33/26 (2006.01) C08L 39/00 (2006.01) C09K 8/68 (2006.01) C09K 8/70 (2006.01) F17D 3/08 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2634446

Coacervate gels having excellent shear viscosities and other properties are made with anionic or cationic polymers, a smaller amount of a surfactant having a charge opposite that of the polymer, and a hydrophobic alcohol and an effective amount of a phosphorus-containing compound sufficient to increase the viscosity of coacervate gels up to 3 times as compared to the gels in the absence of the phosphorus-containing compound The Zeta Potential of the gel is maintained at an absolute value of at least 20 Optional gel promoting additives include betaines and amine oxides A preferred gel comprises poly diallyl dimethyl ammonium chloride, a lesser amount of sodium lauryl sulfonate, and lauryl alcohol The gels are particularly useful in well drilling fluids and well fracturing fluids

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