Study of Laboratory Effect Nonyl Phenol Ethoxylate Concentration in Alpha Olefin Sulfonate Surfactant Concentartion For Recovery Factor Use Spontaneous Imbibition

Authors

  • Novia Rita , Nur Venny Helina

Abstract

Recovery factor of crude oil with primary recovery by relying on pressure and secondary
recovery in the form of waterflooding usually results in poor displacement efficiency. Prevent this problem,
Enhanced Oil Recovery (EOR) method is used which can change the physical properties of the fluid and the
physical properties of the rock. One of the EOR methods used is surfactant. Anionic surfactant that is often
used by petroleum sulfonate is alpha olefin sulfonate. Alpha olefin sulfonate surfactant performance is
influenced by concentration and salinity. At salinity of 20,000 ppm produces a lower recovery factor than
salinity of 10,000 ppm and 15,000 ppm. Cosurfactant chemicals added to surfactant injection to increase
surfactant effectiveness. Cosurfactants are often needed to make primary surfactants quite soluble. The use
of cosurfactants is economically beneficial in terms of higher oil yields because of better surfactant
performance.
Therefore in this study, researchers wanted to see the performance of anionic surfactant solution of alpha
olefin sulfonate (AOS) which has a low concentration of 0.1%, 0.2%, 0.3%, 0.4%, and 0.5% at salinity of
20,000 ppm with the addition of cosurfactants at concentrations of 0.1%, 0.2%, 0.3%, 0.4% and 0.5%. The
cosurfactant to be used is nonyl phenol ethoxylate (NP-10). The method to be used is spontaneous
imbibition. The results of the research can be seen from the optimum acquisition factor from several
variations of the concentration of the surfactant solution and cosurfactant used. The results obtained by
mixing surfactants are compatible but at AOS concentrations of 0.5% with NP-10 0.2%, 0.3%, 0.4%, 0.5%
solution becomes turbid. Then the optimum recovery at mixing AOS concentration of 0.3% and NP-10
0.1%.
Key

Published

2020-01-31

Issue

Section

Articles