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针对目前油基钻井液钻水平井过程中出现的不足之处,研究了可逆转油包水乳化钻井液。该体系性能稳定,易于调控,具有较强的抗污染能力。通过引入新型流型调节剂,解决了油基钻井液钻水平井的携岩问题。研制出的可逆转乳化剂,通过添加水溶性酸可变成水包油乳状液。它具有很好的滤饼清洗作用,可改善裸眼完井生产,有效清除钻屑,有利于环境保护和储层保护。
In view of the shortcomings in the current oil-based drilling fluid horizontal well drilling, reversible water-in-oil emulsion drilling fluid was studied. The system is stable, easy to regulate, with strong anti-pollution ability. By introducing a new type of flow regulator, solved the oil-based drilling fluid horizontal well rock carrying problems. Developed reversible emulsifier, by adding water-soluble acid can become an oil-in-water emulsion. It has a good filter cake cleaning effect can improve the completion of open-hole production, effective removal of cuttings, is conducive to environmental protection and reservoir protection.