鄂尔多斯盆地安83井区长7储层产能影响因素分析

The Productivity Influential Factor Analysis of Chang 7 Reservoir in Well An 83 of Ordos Basin

油井产量决定致密油藏开发的成败,弄清油井产量对致密油藏的开发有着重要意义。以鄂尔多斯盆地安83井区长7致密油藏为例,概述了油井产能的变化特征,运用统计学方法分析了储层厚度、渗透率、初始含油饱和度、射孔段长度及压裂完井对油井产量的影响。研究结果表明,储层特征中,储层厚度和渗透率对油井产能影响较大,初始含油饱和度影响较小;工艺作用中,射孔段长度和压裂完井影响较大。该研究结果对安83井区长7储层开发有一定指导意义。

Oil production decides the success of dense reservoir development and it is of great significance to find out the effect of oil production on dense reservoir development.In this paper,the Chang 7Reservoir in Well An 83 of Ordos Basin is taken for example,it gives an overview of characteristic changes of well productivity and a statistical method is used to analyze the influence of reservoir thickness,permeability,initial oil saturation,perforating length and fracturing completion on oil production.In reservoir characteristics,the reservoir thickness and permeability have a great impact on well productivity,while the influence of initial oil saturation is small;in the process,perforating length and fracturing completion have great impact on well productivity.The research results have certain significance for Chang 7Reservoir development.