稠油水平井溶剂辅助重力驱数学模型  

Mathematical model of solvent assisted gravity drive of horizontal well in heavy oil reservoir

作　　者：方洋[1,2] 唐书恒[1] 杨滨 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中石油长城钻探测试公司,北京100101 [3]中海油研究总院,北京100027

出　　处：《中国石油大学学报（自然科学版）》2012年第6期99-102,共4页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家科技重大专项(2008ZX05024-002)

摘　　要：以热力学相平衡理论和多孔介质流体渗流方程为基础,考虑溶剂对流弥散和沥青结晶效应的影响建立溶剂和稠油体系多组分数学模型,系统描述溶剂抽提稠油'稀释油'泄油机制。结果表明:模型能够反映溶剂腔发育过程;扩展阶段合理泄油速度是影响溶剂辅助重力驱储层伤害的关键因素,在抽提初期溶剂注入速度对腔体发育和泄油量贡献是有限的;该模型可应用于溶剂辅助重力驱效果预测及矿场试验可行性研究。Based on the theory of thermodynamics equilibrium and flow equation in porous media, a compositional mathematic model of solvent and heavy oil system was established by considering convective dispersion and asphlat crystallization effect. The drainage mechanism of solvent extracting heavy oil was systematically described. The results show that the simu- lated results can reflect the evolution process of solvent chamber well. And the rational production rate during the spreading phase is the key factor affecting the formation damage in the solvent assisted gravity drive process. The contribution of input- ting velocity to the chamber well development and drainage volume is limited at the vapour extraction initial stage. This model can he used to predict solvent assisted gravity drive effect and to study field feasibility.

关 键 词：稠油 溶剂辅助重力泄油 沥青结晶 数学模型 

分 类 号：TE345[石油与天然气工程—油气田开发工程]