钻井液中表面活性剂的应用及室内研究

Application of surfactants and laboratory study in drilling fluid

概述了阴离子、阳离子、非离子和两性表面活性剂的应用范围;并对几种常见的表面活性剂做了初步的室内评价。研究表明:1.5%聚合醇和0.1%十二烷基苯磺酸钠的复配后,表面张力降低程度较明显,能缓解水锁效应。

The application range of four types of surfactant including anion, cation, nonionic and amphoteric surfactants is summarized. The primary evaluation for some common surfactants is carried out in laboratory. The results show that the com- bination solution of 1.5 % polyalcohol polyoland and 0.1% dodecylbenzenesulfonic acid sodium can significantly reduce the sur- face tension, and the water blocking effect can be alleviated.