水平井高研磨性产层小井眼氮气钻井实践

在产层中进行小井眼氮气钻井将面临井控、钻头使用、轨迹监测等难题。此类地层上采用小井眼氮气钻井在工艺技术上是可行的,能大幅度提高钻井速度。在龙002-4-X2井钻进时提高钻速的同时还直观有效地发现了一个气层,并确定了珍珠冲段的含水层深度。

Practice of Slim-Hole Nitrogen Drilling at High Abrasiveness Producing Formation of Horizontal Wells

Conducting the slim-hole nitrogen drilling in the producing formation will be confronted with some difficulties about well control,drilling heads and trajectory detection.It is feasible in the technology to adopt the slim-hole nitrogen drilling at such formation,which can increase the drilling speed substantially.During the drilling of Long 002-4-X2 well,the use of this method has not only improved the drilling speed,but also has discovered one gas reservoir directly and effectively and determined the water-bearing depth of pearlite alluvial formation.