Treating subterranean well formations

Details Treating subterranean well formations Treating subterranean well formations

C - Chemistry, Metallurgy

09

K

31/16, 166/22

C09K 8/72 (2006.01) C09K 8/70 (2006.01) E21B 43/22 (2006.01)

Patent

CA 1109244

TREATING SUBTERRANEAN WELL FORMATIONS Abstract of the Disclosure A method of treating a subterranean well formation wherein a low pH highly viscous thixotropic treating fluid is introduced into the formation. The treating fluid is formed by combining an aqueous acid solution with an aqueous alkali metal silicate solution and a gelling agent whereby a highly viscous polymerized alkali metal silicate gel of low pH is produced followed by shearing of the gel to impart thixotropic properties thereto.

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