特高含水后期油藏时变数值模拟处理方法研究  

RESEARCH ON NUMERICAL SIMULATION PROCESSING MODE BASED ON RESERVOIR TIME VARYING PHYSICAL PROPERTIES AND SEEPAGE IN EXTRA HIGH WATER CUT STAGE

作　　者：许强[1] 陈燕虎[1] 侯玉培[1] 李恒东[2] 

机构地区：[1]胜利油田分公司地质科学研究院 [2]胜利采油厂

出　　处：《钻采工艺》2015年第5期41-43,8,共3页Drilling & Production Technology

基　　金：国家重大专项"胜利油田特高含水期提高采收率技术"(编号:2011ZX05011)

摘　　要：目前商业化数值模拟软件在开展油藏数值模拟时没有考虑油藏参数的时变性,不能反映油藏特高含水后期物性分布及流体渗流规律,不能准确描述特高含水后期剩余油分布特征。为准确开展整装油田特高含水后期剩余油分布规律研究,从油藏数值模拟软件的实用性和普适性出发,提出了在现有商业化油藏数值模拟软件的计算过程中,通过考虑过水倍数与渗透率及相对渗透率的变化关系来建立动态变化模型的处理方法。采用此改进的数值模拟方法,能够有效地反映油藏储层参数和渗流规律随注水冲刷倍数变化的现象,从而保证了油藏数值模拟结果的可靠性,为油田开发方案的调整与优化提供了合理的参考依据。For the commercial numerical simulation software does not consider the time varying physical properties and seepage of reservoir after long time water flooding,the change of the physical properties and seepage can't be accurately described(luring the numerical simulation,and the physical properties,oil- water movement and remaining oil distribution rule in the reservoir can't represent the real situation.So,in order to accurately describe the reservoir properties and oil distribution rule in extra high water cut stage,and considering the practicability and adaptability of the commercial software,a new processing mode was build by taking into account the relationship of the permeability and relative permeability change with the time as the water flooding going on.The relation curve and formula showed the changing rule of the reservoir parameters.Based on the new processing mode,the numerical simulation could get the more accurate result of the remaining oil distribution,and oil development plan adjustment and index optimization would be more reasonable.

关 键 词：物性时变 沉积相带 过水倍数 相渗时变 数值模拟 

分 类 号：TE319[石油与天然气工程—油气田开发工程]