Casing Running Technology Breakthroughs in Frozen Soil Drilling-Water Well Drilling Rig

新聞 194 Views
Frozen soil casings are prone to deformation from frost heave forces.water well drilling rig. Innovative technologies include:

 

  1. Flexible casing:
    Made of Ni-Ti memory alloy, it withstands 100 MPa radial pressure.water well drilling rig
  2. Staged installation:
    First run a 168mm guide casing, then follow with a 114mm working casing.
  3. Grouting cementing:
    Use special cement (initial setting temp. -15°C) achieving 20 MPa strength in 24 hours.water well drilling rig

 

After implementation in Russia’s Sakha Republic, casing pass rate rose from 65% to 98%.Bx-300S-Type-Circulation-Expansion-Slide-Bar-Water-Well-Drilling-Rig