摘要
针对注水井试井缺乏考虑含水率、水驱前缘等参数的问题,根据质量守恒原理,结合注水井岩心归一化相渗曲线,油水两相区运用油水两相流渗流理论,建立三区流体复合注水井试井模型;通过拉普拉斯变换,利用Stehfest数值反演得到实空间解,绘制了压力和压力导数双对数样板曲线,分析纯水驱前缘、油水两相驱前缘、两相区含水率、两相区含水饱和度等注水油藏重要参数对试井曲线的影响。研究结果对认识注水油藏的物性参数及注水情况起到重要作用,为注水油藏进一步合理注水开发提供依据。
In allusion to the problem of lack of consideration of water content and water advance front in well test of water injection wells,a three-zone fluid composite well test model was established for water injection wells based on the law of conservation of mass and uniformed relative permeability curve for cores in water injection wells and oil-water two phase flow filtration theory.The model was made by Laplace transformation to get the Laplace space solution,and then real space solution was obtained by using Stehfest numerical inversion,a log-log type-curve of pressure-pressure derivative was drawn.The influence of the parameters of water advance front,oil-water advance front,water content and water saturation in two phase area on well testing curve was analyzed.The result is of great significance for understanding the physical parameters in water injection reservoirs and for rational development of water injection reservoirs.
出处
《石油天然气学报》
CAS
CSCD
2013年第2期120-125,1,共6页
Journal of Oil and Gas Technology
基金
国家重点基础研究发展计划("973"计划)(2010CB226704)
国家自然科学基金青年基金(51104124)
关键词
试井分析
油水两相流
水驱前缘
含水率
含水饱和度
well test analysis
oil-water two-phase flow
water advance front
water content
water saturation
作者简介
刘佳洁（1985-），男，2010年西南石油大学毕业，博士生，从事试井分析、欠平衡钻井方向研究。
