生物表面活性剂提高采收率的研究进展

Progress of Biosurfactant in EOR

刘 珑 范洪富 赵 娟

LIU Long，FAN Hongfu，ZHAO Juan

生物表面活性剂在开发低渗透油田、稠油油田方面相比于其他合成表面活性剂具有较大的优势。本文从生物表面活性剂的分类介绍出发，阐述了生物表面活性剂驱油机理，介绍了生物表面活性剂在油田的现场应用方法——地面法和地下法，并比较了两种方法的优势及不足；通过分析生物表面活性剂在稠油油田和低渗透油 田的现场应用实例，提出生物表面活性剂在改善开发状况较差油田的驱油效果方面具有较大的优越性；并总结了利用生物表面活性剂提高采收率的优势和缺陷，提出一些相应的建议。参 32

Biosurfactants have great advantages in the development of low permeability oil fields and heavy oil fields compared with other synthetic surfactants. The classification of biosurfactants was described. The mechanism of biosurfactant flooding was concluded. The field application methods of biosurfactants in oil fields，including extra situm and underground method were introduced，and the advantages and disadvantages of the two methods were analyzed. The results of the field application of biosurfactants in heavy oil fields and low permeability oil fields was put forward to prove that that biosurfactants have greater advantages in improving the oil displacement effect of oil fields with poor development conditions. At last，the advantages and disavantages of biosurfactants in EOR were summarized and some corresponding suggestions was put forward.