liner-hangers

Accomplish more downhole with advanced liner hanger systems

Bumper Sub

Dart-friendly bumper sub promotes reliable liner installation

Pressure-tested prior to every job, our bumper sub is friendly to cementing equipment and service technicians.

Innovative Features        

  • Avoids small internal diameters and square shoulders at internal transition points which limit compatibility with drill pipe wipers or darts           
  • Accommodating design helps technician determine neutral weight of drill throughout liner deployment    
DP Size (in.) Tool ID (in.) Tensile Rating (kips) Compression Rating (kips) Torque Rating (ft-lbs)
3-1/2 2.25 250 390 20,020
4 2.25 250 390 20,020
4-1/2 2.75 770 790 31,600
5 2.75 770 790 31,600