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近年来,随着川东北区块开发力度的加大,气体钻井、复合导向钻具、高效PDC的使用,机械钻速和单只钻头进尺都有大幅度提高,也给钻井液提出了更高的要求。本文针对四川钻井中气液转换以及高密度钻井液性能控制两大难题,提出了具有特色的润湿翻转喷淋技术以及强抑制聚磺钻井液体系,实际使用过程中很好地解决了川东北地区钻井液中存在的问题,满足了钻井的需要,降低了复杂、事故的发生率。
In recent years, with the development of blocks in northeastern Sichuan, the use of gas drilling, composite pilot drilling tools, high-efficiency PDC, ROP and single drill footage have greatly increased, and the drilling fluid has also been put forward higher Request. In this paper, two major problems of gas-liquid conversion and performance control of high-density drilling fluid are discussed in this paper. A wet-turned-over sprinkler system and a strong inhibition polysulfonate drilling fluid system are proposed. In the actual process, Regional drilling fluid problems that meet the needs of drilling, reducing the complexity, the incidence of accidents.