Initial Study Compatibility Testing Of AmphotericNonionic Surfactant Combination Towards Formation

Abstract

Surfactant injections that enter the chemical injection group can reduce oil-water interface (IFT)
tension, change wettability, and stabilize emulsions. Adding a small amount of surfactant to the formation
water will significantly reduce the surface tension. This study a combination of amphoteric and surfactants
was carried out. As a step to the success of the surfactant injection it is necessary to do compatibility testing,
in order to avoid the deposition of solutions that can reduce the performance of the injection process. The
parameters to be tested for compatibility include the difference in ratios of 1:1, 1:2, and 2:1 with
concentrations (0.5%, 1%, 1.5%, and 2%) for x field and brine synthetic with variation concentration (5,000;
10,000; 25,000; 50,000 and 100,000 ppm). The purpose of this study was conducted to determine the
compatibility of amphoteric surfactants, and surfactants in formation water with a variety of mixing ratios
and concentrations. This test is carried out in a laboratory scale. The test results obtained show that the
increasing concentration and the increasing number of surfactant ratios compared to amphoteric surfactants
shows indications of an incompatible solution. Of the three mixing ratios, which are compatible with
formation water are 1:1, and 1: 2 concentrations and for brine with 5,000; 10,000; 25,000; 50,000 and
100,000 ppm the compatible surfactants mixture are surfactants with 0,5% concentration with mixing ratios
1:1 and 2:1.