Emergency Solutions for Stuck Drill in Frozen Soil Areas-Water Well Drilling Rig

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Stuck drills in frozen soil often result from ice-wedge effects, Plate-forme de forage de puits d’eau,requiring three-level emergency responses:

 

  1. Primary release:
    Inject 30% methanol aqueous solution to melt ice around the drill pipe, while lifting the drill tool up and down.
  2. Intermediate treatment:
    Use a pulse shock tool with 2000N・m impact force to break the ice lock.
  3. Advanced rescue:
    Combine milling tools with liquid nitrogen freezing to make ice around the stuck section shrink and fall off.water well drilling rig

 

Data from an oilfield shows that using the three-level plan together can resolve 90% of stuck drill accidents within 4 hours.