低渗透油藏复合表面活性剂水驱试验  

Water drive experiment of low-permeability reservoir using compound surfactant

作　　者：王小泉[1] 樊西惊[1] 

机构地区：[1]西安石油大学化学化工学院,陕西西安710065

出　　处：《西安石油大学学报（自然科学版）》2004年第5期31-34,55,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

摘　　要：介绍了应用一种价格较低廉的石油磺酸盐复合表面活性剂的新型驱油剂对低渗—特低渗油藏的驱替试验.采用石油磺酸盐并复配以辅助表面活性剂所形成的驱替剂与储层流体相容性好,吸附损耗量小,且不发生沉淀.该复合表面活性驱油剂降低油/水界面张力至0 903mN/m,改善了岩石润湿性,投入产出比达到1∶3 26,注驱油剂比单纯注水开发提高采收率9%.A water drive experiment of low-permeability reservoir is introduced, in which a compound surfactant is used. The compound surfactant is compounded by petroleum sulfonate with auxiliary surfactant, and its cost is low. The displacement fluid containing the compound surfactant has good compatibility with reservoir fluid, there is a little adsorption loss, and no precipitate is produced. The compound surfactant makes O/W interfacial tension reduce to 0.903 mN/m, and it improves the wettability of rock. The ratio of input to output reaches to 1∶3.26. The compound surfactant can makes the recovery factor of waterflooding development be enhanced by 9%.

关 键 词：驱油剂 低渗透油藏 水驱 驱替剂 驱替试验 注水开发 石油磺酸盐 复合表面活性剂 助表面活性剂 新型 

分 类 号：TE357[石油与天然气工程—油气田开发工程] TE348