渤海B油田气顶油藏开发策略研究  

Study on Development Strategy of Gas Cap Reservoir in Bohai Sea B Oilfield

作　　者：王雨 雷源 吴晓慧 刘美佳 马栋 WANG Yu;LEI Yuan;WU Xiaohui;LIU Meijia;MA Dong(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,天津塘沽300459

出　　处：《广东石油化工学院学报》2021年第4期1-4,18,共5页Journal of Guangdong University of Petrochemical Technology

基　　金：国家科技重大专项(2016ZX05058001)。

摘　　要：小气顶油藏在开发过程中,受气顶和注入水的共同作用,油气容易发生互窜,此文借助数值模拟以及油藏工程方法,研究了开发方式、开采顺序、注水时机以及采气速度对小型气顶油藏开发效果的影响。研究结果认为,小气顶油藏适合注水开发,在地层压力保持水平为90%~95%时注水。对于储量较小的油藏,建议采用不采气只采油的方式;而对于储量较大的砂体,建议采用先采油后采气的方式。为了筛选合理的采气速度,建立注采比一定时油气界面移动速度与采油速度、采气速度的关系图版来求解合理的采气速度。研究结果对小气顶油藏的开发具有重要的意义。During the development of small gas cap reservoir,the interaction of gas cap and injected water causes oil and gas to flow into each other.By means of numerical simulation and reservoir engineering,the paper studies the development method and strategy,the influence of water injection timing and gas production rate on development effect of small gas cap reservoir.The results show that water should be injected into small gas cap reservoirs,and the water injection timing is about 90%~95%of formation pressure.For the sand body with large reserves,it is suggested to adopt the mode of oil production before gas production.The reasonable gas production rate can be obtained by establishing the graph of oil-gas interface moving speed,oil production speed and gas production speed at a certain injection-production ratio.The research results are of great significance to the development of small gas cap reservoirs.

关 键 词：小气顶油藏 开发方式 开发策略 注水时机 采气速度 

分 类 号：TE341[石油与天然气工程—油气田开发工程]