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中4井是中石化西部新区在塔里木盆地一口重点预探井,钻达井深7220m,创中国陆上最深井钻井记录,在该井施工中,开展了钻头类型优选、分井段钻井液体系和性能优选、超深井固井和钻具防腐等一系列研究,实现了超深井钻井较优记录。
Well Zhong 4 is a key pre-exploratory well in the Tarim Basin in the western part of Sinopec. Its drilling depth reaches 7220 m, making it the deepest well drilling record in China. In the construction of the well, the drilling type optimization and well drilling fluid system and performance optimization , Ultra-deep well cementing and drilling tool anticorrosive and a series of studies to achieve ultra-deep well drilling record.