海上边水稠油油藏见水时间预测新方法:以海上LD油田为例  

Water Breakthrough Time Law of Offshore Edge Water Heavy Oil Reservoir:A Case Study of Offshore LD Oilfield

作　　者：刘超 陈存良 张俊廷 LIU Chao;CHEN Cun-liang;ZHANG Jun-ting(CNOOC Tianjin Branch,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《承德石油高等专科学校学报》2024年第2期21-26,共6页Journal of Chengde Petroleum College

基　　金：国家科技重大专项(渤海油田加密调整及提高采收率油藏工程技术示范):2016ZX05058-001;中海石油(中国)有限公司科技攻关项目(渤海双高油田挖潜关键技术研究):YXKY-2018-TJ-04。

摘　　要：边水油藏见水时间的准确预测有助于油田精准施策,实现控水稳油、提高采收率。以海上LD油田为研究对象,利用数值模拟技术研究了平均渗透率、级差、距边水距离、水体倍数、采油速度、原油粘度等因素对见水时间的影响规律,并利用相对极差法确定主控因素。在此基础上,利用正交设计法设计模拟方案,根据模拟结果回归边水油藏见水时间预测的经验公式。研究表明:距边水距离、采油速度、级差、原油粘度是影响LD油田见水时间的主控因素;经验公式的预测结果拟合精度达到0.93,现场计算结果与油田实际情况一致;研究成果指导高含水井确定出水层位,卡水作业后,X19井日增油10 m^(3)/d,对于提高边水油藏的开发效果具有一定指导意义。The accurate prediction of water breakthrough time of edge water reservoir is helpful to the accurate implementation of oilfield strategy,the realization of water control and oil stabilization,and the enhancement of oil recovery.Taking offshore LD Oilfield as the research object,numerical simulation technology is used to study the influence of average permeability,grade difference,distance from edge water,water multiple,oil recovery speed,crude oil viscosity and other factors on water breakthrough time,and the relative range method is used to determine the main control factors.On this basis,the orthogonal design method is used to design the simulation scheme,and the empirical formula for predicting water breakthrough time of edge water reservoir is regressed according to the simulation results.Here are the results:first,the distance from edge water,oil recovery rate,oil grade difference and crude oil viscosity are the main controlling factors affecting the water breakthrough time of LD Oilfield;second,the prediction result of empirical formula reaches 0.93,which is consistent with the actual situation of the oilfield;third,the research results help to determine the water output layer of high water content wells.After the water blocking operation,the daily oil of X19 Well increased 10 m^(3)/d.The research results have certain guiding significance for improving the development effect of edge water reservoir.

关 键 词：边水油藏 见水时间 正交设计 相对极差 

分 类 号：TE53[石油与天然气工程—油气田开发工程]