海上K油田优势渗流通道定量刻画研究  

Quantitative characterization of dominant seepage channels in offshore K oilfield

作　　者：蒋维军 张彩旗 吴东明 姜晶 杨志成 李超 王雁萍 党婧文 王鹏润 JIANG Weijun;ZHANG Caiqi;WU Dongming;JIANG Jing;YANG Zhicheng;LI Chao;WANG Yanping;DANG Jingwen;WANG Pengrun(Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin 300459,China;China Oilfield Corporation Limited,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 [2]中海油田股份有限公司,天津300459

出　　处：《石油化工应用》2024年第2期27-32,48,共7页Petrochemical Industry Application

摘　　要：海上K油田平面、纵向非均质性严重,经过长期注水开发油田含水率、采出程度高,形成优势渗流通道影响开发效果。为了调整吸水剖面改善开发效果,本文根据渗流力学原理推导出优势渗流通道描述方法,利用相对渗透率曲线推算出井间窜流通道定量刻画方程,并将该方法应用于K油田,定量刻画出优势渗流通道体积、渗透率、孔喉半径等参数;在此基础上设计优化化学驱调堵段塞用量,采出程度较基础水驱方案提高8.55个百分点。The horizontal and vertical heterogeneity of offshore K oilfield is serious.After long-term waterflooding development,the oilfield has high water cut and high recovery degree,which forms the dominant seepage channel and affects the development effect.In order to adjust the water absorption profile and improve the development effect,this paper deduced the description method of the dominant seepage channel according to the principle of seepage mechanics,and calculated the quantitative characterization equation of the interwell channeling flow channel by using the relative permeability curve.The method was applied to K oilfield,and the distribution volume,permeability,pore throat radius and other parameters of the dominant seepage channel were quantitatively described.On this basis,the chemical flooding slugging quantity was optimized,and the recovery degree was 8.55 percentage points higher than that of the water flooding scheme.

关 键 词：优势渗流通道 定量刻画 化学调驱 方案优化 

分 类 号：TE312[石油与天然气工程—油气田开发工程]