薄层稠油藏溶剂辅助蒸汽驱产量预测模型

发布时间：2018-01-08 17:06

本文关键词：薄层稠油藏溶剂辅助蒸汽驱产量预测模型　出处：《计算物理》2017年02期 　论文类型：期刊论文

【摘要】：通过分析生产数据和数值模拟结果,将薄层稠油油藏溶剂辅助蒸汽驱生产过程分为蒸汽前缘垂向扩展阶段、蒸汽前缘水平扩展阶段及冷凝水产出阶段.针对每个生产阶段,通过联合质量守恒方程、运动方程、能量守恒方程及溶剂扩散方程得到描述蒸汽前缘扩展和产油量解析模型.能量守恒方程属于典型的第二类Volterra积分函数,首先对其进行Laplace变换;之后运用半解析方法对该模型进行求解.为验证模型的正确性,将模型的溶剂辅助蒸汽驱计算结果与数值模拟结果对比,整体误差仅为4%.新模型可以方便简单地分析不同溶剂性能和注采参数对溶剂蒸汽驱开发效果的影响.
[Abstract]:Through the analysis of the production data and the result of numerical simulation, the thin heavy oil reservoir of solvent assisted steam flooding process was divided into the steam front vertical expansion stage, the steam front horizontal expansion stage and condensate output stage. For each stage of production, through the joint motion equation, mass conservation equation, energy conservation equation and solvent diffusion equations are obtained that describe model analysis of the steam front expansion and production belongs to the second kind of Volterra integral function typical energy conservation equation, firstly, its Laplace transform; then use the semi analytical method is performed on the model solution. In order to verify the correctness of the model, the solvent assisted steam model flooding calculation and numerical simulation results, the error is only the new 4%. model can conveniently influence analysis on development result of steam flooding in different solvent solvent properties and injection production parameters.

【作者单位】：中国石油大学(北京)石油工程学院;中国石化胜利油田有限公司临盘采油厂;中国石油勘探开发研究院;
【基金】：国家重大专项(2016ZX05012-005-004)资助项目
【分类号】：TE345
【正文快照】： 0引言稠油油藏广泛存在于世界各地,厚度低于10 m的薄层稠油油藏所占比例较高,在加拿大某些省份其比例可以达稠油油藏的97%[1].水平井注蒸汽技术是目前开发此类油藏的主要手段,且认为水平井蒸汽驱要优于注蒸汽重力辅助泄油(SAGD)[2],并已经在国内胜利、辽河等油田得到实施[3-4]

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