海上疏松砂岩油田注水压力优化方法研究  

Research on optimization method of water injection pressure in offshore loose sand oilfield

作　　者：阎洪涛 徐文江[1] 于继飞 姜维东[1] 陈欢 YAN Hongtao;XU Wenjiang;YU Jifei;JIANG Weidong;CHEN Huan(Development and Production Department of CNOOC,Beijing 100010,China;CNOOC Research Institute Co.,Ltd.,Beijing 100028,China)

机构地区：[1]中国海洋石油有限公司开发生产部,北京100010 [2]中海油研究总院有限责任公司,北京100028

出　　处：《中国海上油气》2021年第2期131-135,共5页China Offshore Oil and Gas

基　　金：中国海洋石油集团有限公司科技项目“中国近海采油工程技术体系研究与建设(编号:YXKY-2018-KFSC-02)”部分研究成果。

摘　　要：海上疏松砂岩油田设计阶段确定的注水压力不能完全满足油田开发过程中配注量的需求,严重影响了油田正常高效生产。结合海上梯级压力测试数据,认为造成注水压力不满足需求的主要原因是近井筒地带存在附加阻力。在此基础上,建立了一种近井筒地带附加阻力的计算方法,并结合井筒摩阻和液柱压力等形成了注水压力优化方法。渤海油田现场试验结果表明,注水压力优化方法可指导不同生产阶段注水压力的确定,具有较好的应用推广价值。The water injection pressure determined in the design stage for offshore loose sand oilfield can’t fully meet the injection requirements during the development process,which seriously affects the normal and efficient production of the oilfield.Combined with the offshore cascade pressure test data,it is considered that the main reason for the water injection pressure not meeting the demand is the existence of additional resistance near the wellbore.On this basis,a calculation method of additional resistance near wellbore is established,and the optimization method of water injection pressure is formed by combining wellbore friction and fluid column pressure.The field test results of Bohai oilfield show that the optimization method of water injection pressure can guide the determination of water injection pressure in different production stages,and has good application and promotion value.

关 键 词：海上疏松砂岩油田 注水压力 附加阻力 优化 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]