A water flood program is required for Kuwait’s Northern and Western fields to maintain
reservoir pressures. The program requires large amounts of aquifer and effluent injection
water, treated with oil field chemicals. The treatment chemicals consist of corrosion inhibitors,
scale inhibitors, and biocides. A laboratory performance evaluation was conducted on four
corrosion inhibitors in combination with scale inhibitors and biocides, to determine the
influence of these other chemicals on the effectiveness of the corrosion inhibitor. The results
indicated that in many cases there was an improvement in corrosion inhibition on addition of
the scale inhibitor but there was generally a reduction in inhibition on addition of the biocide.
The testing enabled the selection of the best corrosion inhibitor, scale inhibitor, and biocide
combination in both sweet and sour waters.