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本文从欠平衡钻井的概念出发,着重介绍了欠平衡钻井的优缺点和井控技术特点。欠平衡钻井有利于识别、评价和发现油气藏。有利于油气层保护,减轻地层伤害,提高油气井产能。有利于提高机械钻速等很多优势,但是也存在成本高,不安全等隐患。本文面对欠平衡钻井的优缺点,详细综述了欠平衡钻井的井控技术特点,为我们更好的全面理解欠平衡钻井打下了坚实基础。
Based on the concept of underbalanced drilling, this paper focuses on the advantages and disadvantages of underbalanced drilling and the characteristics of well control technology. Underbalanced drilling is good for identifying, evaluating and discovering reservoirs. Conducive to the protection of oil and gas reservoirs, reduce formation damage, improve oil and gas well productivity. Help to improve the ROP and many other advantages, but there are also high costs, insecurity and other hidden dangers. In the light of the advantages and disadvantages of underbalanced drilling, this paper summarizes the well control technology features of underbalanced drilling in detail and lays a solid foundation for our better understanding of underbalanced drilling.