Drive Sub

Drive Sub
Impression Block
Junk Mills
Junk Subs
Rotary Shoes
Washover Lifting Plug
image of drive sub - Downhole Oil Tools, Inc.
The DHOT Drive Sub is the crossover between the drill string and the washover string.

The drive sub is manufactured with a pin down matching the washover string x a box up matching the drill string.

All drive subs are manufactured from 4140 HT or 4145M alloy steel. All FJWP and premium threads can be provided for the drive subs.

When ordering, please specify:

  1. OD
  2. Pin Connection
  3. Box Connection
  4. Overall length