水平井油水两相流阵列电磁波持水率计算方法及应用  

Methods and application for water holdup calculation and flowing image based on array electromagnetic wave instrument in horizontal water-oil wells

作　　者：陈猛[1] 谢韦峰 张煜 杨国锋 刘向君[1] CHEN Meng;XIE Weifeng;ZHANG Yu;YANG Guofeng;LIU Xiangjun(School of Geoscience and Technology,Southwest Petroleum University,Chengdu,Sichuan 610500,China;Drilling and Production Technology Research Institute of Qinghai Oilfield Company,Dunhuang,Gansu 736202,China)

机构地区：[1]西南石油大学地球科学与技术学院,四川成都610500 [2]中国石油青海油田分公司钻采工艺研究院,甘肃敦煌736202

出　　处：《油气藏评价与开发》2023年第4期505-512,518,共9页Petroleum Reservoir Evaluation and Development

基　　金：国家自然科学基金“致密油储层孔隙尺度注水吞吐油水两相渗流机理研究”(41804141);油气藏地质及开发工程国家重点实验室开放基金“致密气藏孔隙尺度多因素耦合作用渗吸机理研究”(PLN201933);中国博士后科学基金“多因素耦合作用的致密油储层孔隙尺度动态渗吸机理研究”(2018M643565)。

摘　　要：准确求取水平井多相流持水率和反演井筒流体分布是揭示水平井开发动态的关键基础,以国产阵列电磁波持水率计为切入点开展研究,在对比分析现有阵列持水率定量计算方法基础上,提出了一种基于阵列探头径向投影中点切分面积计算持水率方法,同时对比建立了水平井筒油水两相流高、中、低含水率条件流体介质分布反演方法。研究表明,新方法计算水平井持水率平均绝对误差为4.43%,相对误差为16.34%,明显优于目前采用的权系数法和径向等高面积法;同时,高、中、低含水条件水平井筒流体分布反演以高斯径向基函数法和多元线性法最为匹配,研究成果为矿场水平井多相流生产动态评价奠定基础。The accurate calculation of the water holdup and the inversion of fluid distribution for multi-phase flow play a crucial role in understanding the development performance in horizontal wells.This study builds upon the array electromagnetic wave holdup instrument and proposes a novel method for calculating water holdup.The method is based on the weight of the mid-point tangential area of the probe's radial projection.Additionally,inversion methods for oil-water phase distribution in horizontal wells,considering high,middle,and low water content,were developed by comparing them with existing quantitative calculation methods of the array holdup instrument.The results demonstrated that the new method exhibited an average absolute error of 4.43%and relative errors of 16.34%.These values were significantly better than those obtained using the weight coefficient method and the radial contour area method.For the inversion of fluid distribution in horizontal wells with high,middle,and low water cut conditions,the Gaussian Radial Basis method and multivariate linear method provided the best matches.This research lays a solid foundation for evaluating the production performance of multi-phase flow in horizontal wells.

关 键 词：水平井 油水两相 阵列电磁波持水率 阵列持水率计算 流动成像 

分 类 号：TE33[石油与天然气工程—油气田开发工程]