深水井控在基本原理上和常规水深井控一样,但某些在常规钻井中的“特殊”情况在深水中却很常见,深水钻井另外也面临一些专门的特点和挑战,越洋钻探、British Gas、Chevron等外国石油公司在井控作业中出现过井漏、水合物堵塞管线、地层呼吸效应等复杂情况,最长压井作业耗时近十天,甚至出现钻井液密度窗口极窄而导致井眼报废的重大事故。本文通过总结国内外深水钻井公司以及蓝鲸一号钻井平台在中国南海神狐海域水合物试采的作业经验,并通过查询核心期刊,对深水井控特点、难点进行了分析,为深水井控工作提供了现场应对参考。 Deep well control is fundamentally the same as conventional deep well control. However, some “special” situations are common in conventional wells. Deepwater wells are also subject to some special features and challenges. Overseas drilling , British Gas, Chevron and other foreign oil companies in the well-controlled operations have occurred in the well, leaks hydrate blocking pipeline, stratigraphic breathing effects and other complex situations, the longest time killing operations took nearly ten days, and even drilling fluid density window is extremely narrow The result was a major accident that killed the wellbore. This paper summarizes the operation experience of deep-water drilling company at home and abroad and blue whale-1 drilling platform in the trial mining of hydrate in Shenhu sea area of ​​South China Sea, and analyzes the characteristics and difficulties of well control in deep water through querying core journals, Work provides on-site response reference.