摘要:阿北1井四开井段地层倾角大、构造角度和倾向变化较大,采用大钟摆钻具组合和轻压吊打等措施,纠斜控斜效果不明显。为严格控制井身质量,在四开井段采用Φ171.51TimVTK垂直钻井系统控制井斜钻进,共计入井11次,总进尺504.92m,平均机械钻速1.23m/h,最大井斜2.09°,最小井斜0.11°,不仅达到了纠斜和控斜钻进的目的,同时还提高了机械钻速。
关键词:阿北1井 地层倾角 vtk垂直钻井系统 防斜 机械钻速
单位:中石化西北油田分公司工程技术研究院
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