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准格尔盆地石炭系,大部分为凝灰岩、安山岩、流纹岩、英安岩、玄武岩等坚硬岩性。可钻性差,并伴随有风化壳和良好的裂缝发育易发生井漏、井斜等风险,根据克拉美丽气田滴西33井钻遇石炭系926米,特引进扭力冲击器配合钻盘进行复合钻进,取得了较高的机械钻速和良好的经济效益,并为将来复合钻进的研发起到了指导作用。
The Junggar Basin Carboniferous, most of the tuff, andesite, rhyolite, dacite, basalt and other hard lithology. Drillability is poor, along with weathering crust and good crack development is prone to well leakage, well inclination and other risks, according to Kelameili Beidai 33 well drilling Carboniferous 926 meters, especially the introduction of torque impactor with a drill to complex drill Progressive, and achieved a high penetration rate and good economic benefits, and for the future development of composite drilling has played a guiding role.