驱油用微气泡分散体系调驱性能评价  

Evaluation of Profile Control and Displacement Performance of Microbubble Dispersion System Suitable for Offshore Oilfield

作　　者：吴彬彬 刘文华 赵军 王锦林 徐一思 WU Binbin;LIU Wenhua;ZHAO Jun;WANG Jinlin;XU Yisi(CNOOC EnerTech-Drilling&Production Co.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《北京石油化工学院学报》2025年第1期21-25,32,共6页Journal of Beijing Institute of Petrochemical Technology

摘　　要：针对海上油田泡沫驱矿场实施存在泡沫生成质量难以控制导致注入压力高或不起压等问题,开展了微气泡分散体系提高采收率实验研究。采用自制填砂管制备出微气泡分散体系,并从稳定性、自扩散乳化性、注入性及驱油效率等方面考察了微气泡分散体系的调驱性能。结果表明:微气泡分散体系的稳定性较好;与原油接触后,原油在微气泡分散体系中弥散程度远远大于表面活性剂;微气泡分散体系注入填砂管的阻力系数为25.2,残余阻力系数为9,封堵率达到88.89%,降低回压至1 MPa后残余阻力系数增为13;注入0.3PV微气泡分散体系提高原油采收率相比水驱增加13.66%,降低回压至1 MPa后,后续水驱提高采收率再增加4.11%。In view of the problems such as high injection pressure or no pressure rise due to the difficulty in controlling the quality of foam formation during the implementation of foam flooding in offshore oil fields,a study on improving oil recovery with Microbubble Dispersion System was carried out.The Microbubble Dispersion System was prepared using sand filling tubes,and the control and displacement performance of the Microbubble Dispersion System was investigated from the aspects of stability,self diffusion emulsification,injectability,and oil displacement efficiency.The results show that the stability of the Microbubble Dispersion System is good;After contact with crude oil,the degree of dispersion of crude oil in the Microbubble Dispersion System is much greater than that of surfactants;The resistance coefficient of the Microbubble Dispersion System injected into the sand filling pipe is 25.2,the residual resistance coefficient is 9,and the sealing rate reaches 88.89%.After reducing the back pressure to 1 MPa,the residual resistance coefficient increases to 13;The oil displacement efficiency of injecting 0.3PV Microbubble Dispersion System increased by 13.66%compared to water flooding.After reducing the back pressure to 1 MPa,the subsequent water flooding oil displacement efficiency increased by 4.11%.

关 键 词：海上油田 提高采收率 微气泡分散体系 调驱性能 自扩散乳化 

分 类 号：TE357[石油与天然气工程—油气田开发工程]