国外某油田水淹层测井解释方法  

Log Interpretation Method for Water Flooded Layer in a Foreign Oilfield

作　　者：苗清 令狐松 林雅平[3] 刘江 幸奠琼 MIAO Qing;LINGHU Song;LIN Yaping;LIU Jiang;XING Dianqiong(Southwest Branch,China Petroleum Logging CO.LTD.,Chongqing 401120,China;Logging Application Research Institute,China Petroleum Logging CO.LTD.,Xi’an,Shaanxi 710077,China;Research Institute of Petroleum Exploration&Development,Beijing,100083,China;Daqing Branch,China Petroleum Logging CO.LTD.,Daqing,Heilongjiang 163712,China)

机构地区：[1]中国石油集团测井有限公司西南分公司,重庆401120 [2]中国石油集团测井有限公司测井应用研究院,陕西西安710077 [3]中国石油勘探开发研究院,北京100083 [4]中国石油集团测井有限公司大庆分公司,黑龙江大庆163712

出　　处：《测井技术》2020年第5期486-490,共5页Well Logging Technology

摘　　要：国外某油田注水开发时间长,各层位物性不同,水淹规律较为复杂。利用地层压力测试资料,明确地层压力与水淹程度关系;采用J函数计算得到视毛细管压力曲线,用以指示储层内部孔喉半径大小,间接反映水淹程度。利用测井曲线波动性反映储层之间非均质性大小,构建判别水淹层的指示函数,应用曲线重叠法定性识别水淹层,建立三饱和度(原油饱和度、可动油饱和度和残余油饱和度)重叠定量识别水淹层的方法。实际应用表明,利用本文方法并结合地质、试油及生产资料综合识别水淹层,解释符合率达到85.7%。The water injection time of a foreign oilfield is long, the physical properties of each layer are different, and the law of water flooding is complicated. Using the formation pressure test data to clarify the relationship between the formation pressure and water flooding degree, the capillary pressure curve is calculated by using the J-function to indicate the radius of pore throat in reservoir and indirectly reflect the water flooding degree. Log curve volatility is used to reflect the heterogeneity between reservoirs, construct an indicator function, use curve overlap and triple saturation(crude oil saturation, movable oil saturation and residual oil saturation) to identify water flooded layers. Practical applications show that the methods combined with geology, oil production and production data can comprehensively identify the water flooded layer, and the interpretation coincidence rate reaches 85.7%.

关 键 词：测井解释 水淹层 曲线重叠法 毛细管压力 三饱和度 J函数 

分 类 号：P631.84[天文地球—地质矿产勘探]