渤海B油田剩余油主控因素研究  

Study on Distribution of Remaining Oil in B Oilfield of Bohai Sea

作　　者：王雨 李文忠 吴晓慧 刘文政 江远鹏 WANG Yu;LI Wenzhong;WU Xiaohui;LIU Wenzheng;JIANG Yuanpeng(Bohai Oilfield Research Institute,Tianjin Branch of CNOOC Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司渤海石油研究院,天津300459

出　　处：《北京石油化工学院学报》2025年第1期26-32,共7页Journal of Beijing Institute of Petrochemical Technology

基　　金：国家科技重大专项渤海“双高”油田挖潜关键技术研究(YXKY-2018-TJ-04)。

摘　　要：渤海B油田进入中后期,油田逐渐步入高含水期,平面的物性差异导致平面矛盾逐步显现。通过油藏工程方法和数值模拟法总结了油田平面与纵向剩余油主控因素,并对不同井点厚度、不同井网形势的剩余油主控因素进行了精细刻画,从而指导油田后续的挖潜。研究结果表明,平面上剩余油主要存在于油井之间、井组之间以及断层附近;纵向上主要以纵向水驱为主,均质油藏全井射孔下注水井井底纵向波及达到100%,沿注采井间推进,纵向波及程度逐渐降低。渗透率极差、流体密度以及压力梯度直接影响着驱替前缘的位置和波及区与未波及区的分界面,并建立了不同地质模式下的模型。Bohai B Oilfield has entered the mid to late stage,gradually entering the high water cut stage,and the differences in physical properties of the plane have led to the gradual manifestation of plane contradictions.The main controlling factors of remaining oil in the horizontal and vertical directions of the oilfield were summarized through reservoir engineering methods and numerical simulation methods,and the main controlling factors of remaining oil in different well point thicknesses and well network situations were finely characterized to guide the subsequent exploration of the oilfield.The research results indicate that the remaining oil on the plane mainly exists between oil wells,between well groups,and near faults;Vertically,vertical water drive is the main method,and the vertical sweep at the bottom of the injection well in homogeneous oil reservoirs reaches 100%through full well perforation.As it advances along the injection production well,the degree of vertical sweep gradually decreases.The range of permeability,fluid density,and pressure gradient directly affect the position of the displacement front and the boundary between the affected and unaffected areas,and models have been established for geological models.

关 键 词：平面的势 剩余油分布规律 波及系数 主控因素 

分 类 号：TE341[石油与天然气工程—油气田开发工程]