测井-测试综合评价方法及产能预测

Comprehensive Evaluation Methodology Based on Imaging Log & Fracturing Test Data and Productivity Prediction

从油藏条件下达西定律出发,推导出单井产量评价公式,其4个关键因素是油气含量、油气分布、渗流特性和油藏压力。提出了一种基于成像测井和压裂试油的储层综合评价及产能预测方法,用成像测井、压裂试油获得4个因素的关键参数。同时,把均质化地层电磁场论用于储层油气含量计算,建立了用地层真电导率、地层水电阻率和总孔隙度计算含油饱和度方法,实现了快速成像测井直接计算油气含量。该方法在长庆油田姬源地区油气开发中进行了初步应用,建立了测井-测试综合评价流程。

A single well production formula is derived from the Darcy's law under the reservoir conditions.There are four key factors included in the formula,they are hydrocarbon content,hydrocarbon distribution,flow characteristics and reservoir pressure.The hydrocarbon content and distribution are obtained from imaging log,and the flow characteristics and reservoir pressure are obtained from fracturing test,and single well production are computed with the new formula.Thus a comprehensive evaluation method based on imaging log and fracturing test is put forward.The electromagnetic field theory is used to calculate the reservoir hydrocarbon content,the oil saturation calculation method is established by using true conductivity,formation water resistivity and total porosity.Calculation of hydrocarbon is directly achieved by quick imaging log.The new method is applied in hydrocarbon production in Jiyuan area,Changqing oilfield,and the comprehensive evaluation flowsheet of log-test is established.