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涪页HF-1井是中石化勘探南方分公司部署在重庆市万州区福禄镇的一口重点探井,完钻井深3570.00m,主探页岩气层,完钻层位为侏罗系下统自流井组大安寨段。该井在钻井过程中存在页岩层易垮塌、地层压力预测不准等技术难题。为此,该井采用了三开次井身结构,应用了气体钻井技术和复合钻井技术来提高机械钻速,优选及研制了适用地层特性的钻头及油基钻井液体系,确保了该井顺利钻至设计井深。详细介绍了该井工程设计与现场施工情况。
Fu page HF-1 well is a key exploratory well deployed by Sinopec Exploration South Branch in the town of Fulu, Wanzhou District, Chongqing Municipality. Drilling depth of 3570.00m, the main exploration shale gas, the completion of the drilling for the Jurassic Artesian well Big Anzhai section. The well has some technical problems such as easy collapse of shale layers and inaccurate prediction of formation pressure during drilling. To this end, the well used three open well structure, the application of gas drilling technology and composite drilling technology to improve ROP, the preferred and developed for the formation of the drill bit and oil-based drilling fluid system to ensure smooth well Drill to the design depth. Described in detail the well engineering design and site construction situation.