Field Test of Cosurfactant-Enhanced Alkaline Flooding

Author:

Falls A. H.1,Thigpen D. R.2,Nelson R. C.2,Ciaston J. W.3,Lawson J. B.2,Good P. A.4,Uber R. C.2,Shahin G. T.2

Affiliation:

1. Shell Western E&P Inc.

2. Shell Development Co.

3. Shell Offshore Inc.

4. Shell Oil Co.

Abstract

Summary A test of cosurfactant-enhanced alkaline flooding, without polymer for mobility control, was conducted in a small reservoir in the White Castle field, Louisiana. Although the flood was unstable, the process recovered at least 38% of the waterflood residual oil in the reservoir as true tertiary oil and exhibited virtually 100% displacement efficiency. Alkali and cosurfactant propagated through the reservoir with acceptable and predictable losses.

Publisher

Society of Petroleum Engineers (SPE)

Subject

Process Chemistry and Technology

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