Reducing sludging during oil well acidizing

Details Reducing sludging during oil well acidizing Reducing sludging during oil well acidizing

E - Fixed Constructions

21

B

31/13

E21B 43/27 (2006.01) C09K 8/74 (2006.01)

Patent

CA 1318122

ABSTRACT OF THE DISCLOSURE An improved method and composition for reducing the pro- duction of sludge when contacting a subterranean formation containing oil which is subject to sludging with an aqueous acid solution. An anti-sludging agent and one or more other additives are combined with the aqueous acid solution along with a dispersing agent which forms the aqueous acid solu- tion and additives into a long-term homogeneous composition.

592678

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