摘要
运用物模驱油实验主要的相似方法所得出的相似准数较多,对模型制作要求相对较高,实现起来难度较大。从水驱剩余油分布规律及开发效果角度出发,运用几何法与方程法结合的方法,在岩心、流体主要性质相同的情况下,分析出渗流的真实速度(运动速度)相等、几何尺寸成比例变化等规律,可得到一种新的、相对简易的相似转化方法。该方法有效规避了考虑严格几何厚度相似所带来的困难,同时不用筛选、复配不同体系参数,大大降低了相似转化的实现难度。
The similarity methods of physical simulation of oil displacement experiment generate many similarity criteria.The requirement on model construction is relatively high and the realization is difficult.According to the research on remaining oil distribution after water flooding and development performance,this paper combines geometric method with equation method,recognizes that the real velocity(movement velocity) of seepage flow is the same and the geometry changes in proportion when the major features of core and fluid are the same,thus obtained a relatively simple method of similarity transformation.This method effectively averts the difficulty brought by rigorously considering the similarity of geometric thickness,and needs not to select and combine different system parameters,thereby greatly reduced the difficulty of similarity transformation.
出处
《特种油气藏》
CAS
CSCD
2011年第2期89-92,140,共4页
Special Oil & Gas Reservoirs
基金
国家重大专项"海上大井距多层合采稠油油藏剩余油分布驱油实验研究"(2008ZX05024-04-011)
关键词
速度相等
相似推导
几何法
方程法
渤海SZ36-1油田
equality of velocity
similarity criteria
geometric method
equation method
Bohai SZ36-1 oilfield
