基于乳化性能设计的驱油用新型三元复合体系评价  

Evaluation of New ASP System for Oil Displacement Based on Emulsification Performance Design

作　　者：尚丹森 侯吉瑞[1,2,3] 马云飞 SHANG Dansen;HOU Jirui;MA Yunfei(Research Institute for Enhanced Oil Recovery,China University of Petrolemn （Beijing） , Beijing 102249, China;Basic Theory Laboratory for Enhancing Oil Recovery of Low Permeability Oilfield, Key Laboratory of CNPC for Tertiary Oil Recovery Beijing 100083 ,China;Key Laboratory for Petroleum Engineering, Ministry of Education, Beijing 102249,China)

机构地区：[1]中国石油大学(北京)提高采收率研究院,北京102249 [2]中石油三次采油重点实验室低渗油田提高采收率应用基础理论研究室,北京100083 [3]石油工程教育部重点实验室,北京102249

出　　处：《西安石油大学学报（自然科学版）》2018年第3期79-85,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金项目"ASP复合驱油藏油水界面张力变化规律及残余油启动机制研究"(51174216);国家示范工程"大庆长垣特高含水油田提高采收率示范工程"(2011ZX05052)

摘　　要：综合考虑了碱、活性剂、聚合物对三元复合体系乳化性能的影响,建立了一种评价复合体系乳化性能Ie的方法,并评价了基于乳化性能设计的配方1和常规超低界面张力配方2的乳化性能;为对比配方1和配方2的驱油效果,研究乳化作用对洗油效率的影响,进行了驱油实验。结果表明,配方1的乳化性能Ie为0.689,高于配方2的0.462;界面张力非超低,但乳化性能更好的配方1的驱油效果不亚于常规超低界面张力配方2;在300×10^(-3)μm^2、800×10^(-3)μm^2和1 200×10^(-3)μm^2渗透率级别下,渗透率越高,配方1提高采收率幅度越大,最高可比配方2高5%左右;配方1的残余阻力系数高于配方2,且渗透率越低,配方1残余阻力系数越高;原油乳化后形成的乳状液能够有效启动盲端残余油和簇状残余油。Based on the effects of alkaline, surfaetant and polymer on emulsifying property of ASP system, a method for evaluating the emulsifying property Ie of the ASP system was established, and the emulsifying performance I of the fornmla 1 based on emulsifying performanee design and the formula 2 with ultra-low IFT was evaluated. To compare the oil displacement effect of formula 1 with fornmla 2 and study the influenee of enmlsifieation on displacement efficiency, a series of oil displacement experiments were carried out. The experimental results show that Ie of formula 1 is 0. 689 ,which is higher than 0. 462 of formula 2 ; oil displacement effect of formula 1 with better emulsifying properly is not worse than that of formula 2 with ultra-low IFT;under the permeability of 300 ×10-3μm2,800 ×10-3μm2 and 1 200 ×10-3μm2, the enhanced oil recovery of formula 1 is higher than that of formula 2, and it increases with the increase of the permeabilily;the residual resistance coefficient of formula 1 is higher than that of formula 2, and it increases with the reduction of permeability ; the emulsion formed after the emulsification of crude oil can effectively start blind-end residual oil and cluster residual oil.

关 键 词：三元复合体系 界面张力 乳化性能 复合驱 提高采收率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]