摘要
针对江苏低渗油藏开发过程中的问题,开展了基于核磁共振二维谱技术的水驱油实验研究,对比分析了不同驱替阶段的油水变化规律。结果表明:在水驱初期,连片状剩余油占主导地位;随着水驱的进行,连片状剩余油体积比例不断降低,而其他三种剩余油比例不断增加,同时,连片状剩余油体积绝对量不断降低;水驱后期,连片状剩余油不再处于主导地位,但其体积绝对量与网络状、孤岛状体积绝对量相当,依旧具有较大的开发潜力。
Aiming at the problems in the development of low permeability reservoirs in Jiangsu Oilfield,an experimental study of waterdriven oil based on nuclear magnetic resonance(NMR)two-dimensional spectroscopy was carried out to compare and analyze the oilwater change laws during different displacement stages.The results show that in the early stage of water flooding,continuous residual oil is dominant.With the progress of water flooding,the volume proportion of continuous residual oil decreases continuously,while the proportion of the other three types of residual oil increases continuously.At the same time,the absolute volume of continuous residual oil decreases continuously.In the later stage of water flooding,the continuous residual oil is no longer in the dominant position,but its absolute volume is comparable to that of the network and isolated island,which still has large development potential.
作者
张顺康
刘炳官
尤启东
林波
孙东升
金勇
ZHANG Shunkang;LIU Bingguan;YOU Qidong;LIN Bo;SUN Dongsheng;JIN Yong(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China;Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China;Development Management Department of Jiangsu Oilfield,SINOPEC,Yangzhou 225009,China)
出处
《复杂油气藏》
2023年第2期199-203,共5页
Complex Hydrocarbon Reservoirs
基金
中国石化科技攻关项目“江苏低品位储量提高采收率技术研究”(P21082)。
关键词
低渗透
核磁共振
二维谱
水驱油
剩余油
low permeability
NMR
two-dimensional spectrum
water displacing oil
residual oil
