Self diverting matrix acid

Details Self diverting matrix acid Self diverting matrix acid

2007-07-03

2007-07-03

Bagnell, David (Department: 3672)

Wells

Processes

Material placed in pores of formation to treat resident...

C166S307000, C166S308100

Reexamination Certificate

active

10969110

ABSTRACT:
A method is described for treating a subterranean formation with a low viscosity fluid system that contains a viscoelastic surfactant at a concentration too low to viscosify the fluid, but that is concentrated in the formation so that the fluid system gels. The fluid optionally contains a formation-dissolving agent. The fluid is used in matrix acidizing, acid fracturing, and diversion.

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SPE 56529 Case Study of a Novel Acid-Diversion Technique in Carbonate Reservoirs. F.F.Chang, T.Love, C.J.Affeld, J.B.Blevins III, R.L.Thomas, and D.K.Fu, Feb. 1998.
SPE 80274—Application of Novel Diversion Acidizing Techniques to Improve Gas Production in Heterogenous Formation. By Xugang Wang, Honglan Zou, Jun Tian, Fuxiang Zhang, Xingsheng Cheng and Suzhen Li, Feb. 2003.

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