乳状液提高驱油效率的实验研究  

Experimental study on emulsion enhancing displacement efficiency

作　　者：祝仰文[1] 

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《日用化学工业》2017年第8期435-439,共5页China Surfactant Detergent & Cosmetics

基　　金：国家科技重大专项资助项目(2016ZX05011003)

摘　　要：通过柱状岩心模型,实验研究了乳状液的微观驱油特性。乳状液在不同渗透率岩心中的驱替实验结果显示,乳状液提高驱油效率的幅度与渗透率有关,乳状液的粒径范围与岩心孔径范围越接近,其驱油效率越高;乳状液中液滴对提高驱油效率发挥主要作用,而乳化剂对驱油效率的贡献相对很小。对于中高渗透率岩心,黏度相同的聚合物溶液与乳状液提高驱油效率值相近。By columnar core model,the microscopic displacement characteristics of emulsion was studied. Experimental results of emulsion flooding in different permeability cores show that how well emulsion improve displacement efficiency is related to the permeability,and emulsion particle size range is closer to pore diameter range,the higher the displacement efficiency. Droplets in emulsion play a great role in enhancing displacement efficiency,while the contribution of emulsifiers in enhancing displacement efficiency is relatively small. For intermediate permeability cores,the displacement efficiency of polymer solution and emulsion with the same viscosity is similar.

关 键 词：乳状液 驱油效率 渗透率 聚合物 乳化剂 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]