摘要
采用自动法进行了饱和压力拟合、相图计算及拟组分划分,运用权函数及两点上游权法解决了计算中的弥散及稳定性问题,在考虑油气混相程度对相对渗透率和毛管力的影响下,深入研究并建立了多拟组分下三维三相的数学模型。借用sPE4271文中的一例进行了模拟计算,证实了该模型能较好地模拟带底水、油环的凝析气藏的开发过程,该模型与国外同类模型相比,输入参数较少,计算速度较快,拟组分划分比较灵活。同时,对我国华北油田苏桥凝析气田进行了实际模拟,并得出苏桥凝析气田采用干气回注开采时的最佳回注比为60%的结论。
It is the first time in our country to develop a three-dimensional, multi-phase, multicomponent, numerical reservoir simulator. This paper describes a three-dimensional. three-phase, pseudo-component simulator matching the saturation pressure, calculates the phase-diagram, and lumps the components into pseudo-components automatically. A two-point upstream weighting of fluid mobility is used to reduce numerical dspersion of flood fronts and to decrease sensitivity of predicted areal perfomance to grid orientation. The influence of the interface tension on their relative permeability and capillary pressure is considered in the simulator. An example in SPE 4271 is given to demonstrate the reliability and stability of the Simulator. The results indicates that the simulator can simulate efficiently the development of a gas condensate reservoir with oil zone and bottom water (it needs less parameter input and has a higher speed of calculation than the same type abroad). Moreover. the simulater is used to simulate the development of Suqiao gas condensate reservoir in Huabei Oilfield. According to the analysis of results, this paper reaches the conclusion that 60% of gas recycling will be optimum for Suqiao reservoir.
出处
《江汉石油学院学报》
CSCD
北大核心
1991年第1期50-59,共10页
Journal of Jianghan Petroleum Institute
基金
国家"七.五"重点科研攻关项目
关键词
凝析油气田
数学模型
模拟计算
gas condensate field
compositional model
pseudo component
multicomponent mixture
equation of state
equilibrium constant
recycling
Huabei Oilfield
