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  • Tarim Oilfield in the Southern Gas people project, cross 1892m in one-time successfully, directional drilling pipe diameter is Φ219.1mm, wall thickness 6.4mm
  • Liquefied natural gas project in Guangxi gas pipeline, cross Φ813 gas pipeline in one-time of directional drilling project, total crossing length is 980m
  • Qujing gas pipeline crossing mountain, cross mountain 1000m (Ф426 steel pipe) in one-time successfully
  • Harbin-Shenyang gas pipeline project (Changchun-Shenyang section), the pipeline distance is 1515m long, the main pipe diameter is 1016mm*21mm, Ф114 fiber optic cable.