底水油藏确定水侵量的一种新方法  

A new method to determine water influx of reservoir with bottom water

作　　者：张文中[1] 高春光[2] 李星民 

机构地区：[1]中国石化勘探开发研究院,北京100083 [2]中国地质大学,北京100083 [3]中国石油国际勘探公司,北京100083

出　　处：《大庆石油地质与开发》2006年第6期62-63,66,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：对于底水能量较活跃的油藏,平均油藏压力和水侵量是油藏工程中两个重要参数,以KEITH模型为基础,用Laplace及Hankel变换进行求解,求取了平均无量纲油藏压力与水侵量的关系式。若已知其中的一个参数,就可比较准确地确定另一个参数,和物质平衡的求解方法相比,考虑了各向异性的影响。并对油藏压力的影响因素的敏感性进行分析,通过各参数敏感性曲线可以方便地判断水侵量的大小,各向异性的强弱,以及泄油半径的大小,为油藏工程研究提供理论依据。Two significant parameters,for reservoirs with active bottom water,are average reservoir pressure and water influx.Based on the model of KEITH,this paper provides solution by inversion of Laplace and Hankel,and obtaines relation between average reservoir dimensionless pressure and water influx.If one is known,then the other can to be confirmed correctly.Compared with solution method of material balance,the affection of anisotropy is considered.In addition,analysis on sensitivity of affecting factor of reservoir pressure is presented.According to sensitivity curve of parameters,amount of water influx,value of anisotropy and size of drainage radius can be determined conveniently,providing evidence for reservoir engineering research.

关 键 词：底水油藏 平均油藏压力 水侵量 HANKEL变换 

分 类 号：TE349[石油与天然气工程—油气田开发工程]