挥发性油藏轻烃回收理论研究

THEORETICAL RESEARCH ON RECOVERING LIGHT HC FROM VOLATILE OIL RESERVOIRS

以长春油田为挥发性油藏实例，通过流作物性分析资料和实际生产特征的研究，认为挥发性油藏的特殊性取决于它的烃类体系的组分组成特征。该类油（气）藏开发过程中轻烃回收是必要的。以热力学和相平衡理论为基础，选用PR状态方程建立了轻烃回收的相态模型，并且进行了可行性和精度检验。对长春油田进行了轻烃回收模拟计算，获得了具有理论和实际意义的结论。

Taking the volatile oil reservoir of Changchun oil field as an example, this paper studies the practical production features andanalyzes the physical properties of fluids, indicating that the specialty of the volati1e oil reservoir determining the componentsand composition of hydrocarbon system. Recovering light hydrocarbon is necessary in the production process of the volatile oilreservoir. Based on thermodynamics and phase equilibrium, the phase behavior model for recovering light hydrocarbon is builtup by using PR equation of state, and the relevant feasibility study and precise checking have been made for it. Simulation ofrecovering light hydrocarbon from Changchun oil field has been made and some conclusions with theoretical and practicalsignificance have been obtained in the paper.