Biopolymer filterability improvement by caustic-enzyme...

Details Biopolymer filterability improvement by caustic-enzyme... Biopolymer filterability improvement by caustic-enzyme...

E - Fixed Constructions

21

B

166/32

E21B 43/22 (2006.01)

Patent

CA 1117410

Abstract of the Disclosure In an enhanced recovery process involving flooding of subterranean formations with aqueous mixtures of biopolymers, filterability of the biopolymer is synergistically enhanced by treatment with ESPERASE? enzyme at a pH range of 12.5 to 13Ø The range is narrow and exclusive since pHs as high as 12.1 give poor results. The biopolymer can be any one containing debris which must be reduced by the enzyme.

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