高温盐水钻井液技术难点及国内外研究现状

Technical Difficulties of High-Temperature Brine Drilling Fluid and its Research Status at Home and Abroad

在分析高温盐水钻井液面临的主要问题的基础上,对国内外抗高温、抗污染钻井液处理剂及钻井液体系的研究与应用情况进行了介绍。深井、超深井钻探中会面临各种复杂情况,因此对钻井液抗温、抗污染能力的要求也越来越高,主要技术难点是高温高压及高污染条件下对钻井液流变性、滤失量、腐蚀性的控制。耐260℃以上抗高温、抗盐处理剂及体系,耐高温钻井液测试仪器是未来抗高温钻井液发展的方向。

This paper introduces the worldwide application and research status of the drilling fluid additives with high -temperature and pollution re- sistance and drilling fluid systems based on the analysis on their crucial issues. It require increasingly high capacity of temperature resistance and ant/pol- lution to address the various down - hole problems encountered in the deep well and ultra - deep well drilling. The main technical difficulties include keeping their rheology, filtration loss and corrosion at a proper level. Drilling fluid systems possessing better temperature - and salt resistance against tem- perature 260 ℃ and relevant apparatus are the very direction of high temperature drilling fluid.