Research on the Applicability of Polymer Injection Solution with Surfactant Compound for Lower Miocene, Bach Ho Field

Abstract

Similar to polymers, currently on the market there are many surfactants with reasonable prices and high activity. However, the
simultaneous combination of surfactants and polymers in the same mixture has not been thoroughly studied. In this paper, the authors
study the applicability of injecting a mixture of surfactants and polymers for Miocene objects in the lower Bach Ho field. The obtained
results show that the technique of integrating the surfactant and polymer solution raise swept and sweep effectiveness, consequently
increasing the oil recovery coefficient. Based on the simulation model, the recovery factor increased by 10% and the amount of oil
increased by 36.6%. Additionally, findings indicated that the efficiency of increasing oil recovery coefficient from chemical injection via
the combination of surfactants and polymers at well No. 1215 is much higher than that at well No. 1204. The research results can be
used as a reference for studies with the same purpose conducted in areas with similar characteristics to Bach Ho field.