摘要
针对官 2 9块注改性弱碱水及产层特征与开发现状 ,提出了在官 2 9块实施弱碱水复合驱提高采收率的观点。通过弱碱水 ,以及弱碱水 /表面活性剂复合体系对官 2 9块油水界面张力的影响研究 ,确立了弱碱水复合驱的可行性及相应的最佳配方体系 ;并就体系中表面活性剂在油砂上的吸附损失及该体系在模拟人造岩心上的驱油效率进行了研究。从试验上论证了在官 2 9块实施弱碱水复合驱不仅可行 ,而且可提高采收率 (最高达 10 %) ,具有现场应用价值。
According to the fact that modified alkalescent water is being in Guan 29 Block and its formation and exploitation characteristics;the opinion of using alkalescent water combination flooding to enhance oil recovery factor in Guan 29 Block is proposed.By researches on effects of alkalescent water and alkalescent water/surfactant system on oil/water boundary tension of the Guan 29 Block,availability of alkalescent water combination flooding is proved and optimal combination flooding system is determined respectively.In addition,absorption of surfactant in oil sand and oil displacement efficiency of combination flooding system in artificial core are studied.The experiments show that it is feasible to use alkalescent water combination flooding to enhance oil recovery factor in Guan-29 Block,and oil recovery factor is enhanced.
出处
《钻采工艺》
CAS
2002年第4期60-63,共4页
Drilling & Production Technology
