Evaluation of Hexane Performance in Wax Treatments at Fang Oilfield

Abstract Wax deposition occurs in various locations in the petroleum production chain. It can cause many problems for oil production. Chemical method is one of the practical methods for wax prevention treatment. In Fang oilfield, there are problems from wax as well. Therefore, the objective of this study is to evaluate of hexane to reduce the wax problem. For this study, oil samples from the wells located in Mae Soon Reservoir in Fang oil field. Hexane is used as a chemical for this treatment for wax appearance temperature (WAT), pour point and wax deposited weight tests. Also, other factors such as temperature, hexane concentration and time are also studied. The results show that hexane can reduce the wax precipitation by reducing pour point and WAT. Wax deposited weight is reduced as well. Hexane effectiveness can be evaluated and also applied in the region in the oil field with wax problems. Understanding of physics and chemistry of wax precipitation will lead to develop the area economically effective prevention and mitigation methods.