基于产水率的水淹层剩余油分布研究  

Research of Remaining Oil Distribution in Water-Flooded Layers Based on Water Production Rate

作　　者：高衍武 毛晨飞 赵延静 肖华 蔺敬旗 程亮 GAO Yanwu;MAO Chenfei;ZHAO Yanjing;XIAO Hua;LIN Jingqi;CHENG Liang(Research Institute of Logging Application, China Petroleum Logging CO. LTD., Xi’an, Shaanxi 710077, China;Changqing Branch, China Petroleum Logging CO. LTD., Xi’an, Shaanxi 710201, China;Xinjiang Branch, China Petroleum Logging CO. LTD., Xinjiang, Karamay 834000, China)

机构地区：[1]中国石油集团测井有限公司测井应用研究院,陕西西安710077 [2]中国石油集团测井有限公司长庆分公司,陕西西安710201 [3]中国石油集团测井有限公司新疆分公司,新疆克拉玛依834000

出　　处：《测井技术》2021年第2期162-167,共6页Well Logging Technology

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目“复杂岩性储层测井关键技术研究与应用”(2017E-04-12)。

摘　　要：利用测井资料确定油田注水开发后期各老井产层剩余油饱和度具有一定的局限性,测井资料难以实时反映产层剩余油饱和度的变化情况。基于岩石物理实验测得的油水相对渗透率资料,在常规产水率模型的基础上,引入束缚水饱和度和残余油饱和度2个参数,推导出新的产水率模型。依据新模型建立W油田不同束缚水饱和度下产水率与含水饱和度图版,系统阐述利用产水率与含水饱和度图版确定产层剩余油饱和度的方法,并结合研究区地质特征及水淹模式,在三维地质建模的基础上归纳总结研究区层内剩余油垂向及平面分布情况。研究区实例分析表明,该方法充分利用了各老井的产水率资料,拟合剩余油分布情况具有代表性,适用于注水开发油田产层剩余油分布研究。In the late stage of water injection development in oilfields,there are some limitations when remaining oil saturation of old wells production layer is determined by logging data.It is difficult for the logging data to reflect the change of remaining oil saturation of production layer in real time.Based on the relative permeability of oil and water measured by petrophysical experiments,two parameters of irreducible water saturation and residual oil saturation are introduced into the water production rate model at first,then the chart of water production rate and water saturation in W-oilfield at different bound water saturations is established.The method of using the chart to determine the remaining oil saturation of the producing layer is systematically explained.Based on the geologic characteristics and water-flooded model of the study area,the remaining oil distribution situation of vertical and plane is summarized on 3D geological modeling.The analysis of examples in the study area shows that the water production data of old wells are fully utilized,and the results are widely representative.The method is suitable for the study of the remaining oil distribution in water injection development oilfield.

关 键 词：测井解释 水淹层 剩余油分布 产水率 束缚水饱和度 残余油饱和度 生产测井资料 

分 类 号：P631.84[天文地球—地质矿产勘探]