Torque and Weight Applications

  • Detecting Bit Cone Locking
  • Correlation at the Bit

Start Bit Run



Dimensionless Torque, TD =

1 Shale I Line


Dimensionless torque can be used to discriminate shales, ahead of the gamma ray, as the bit breaks the rock. The jump in dimensionless torque above "Shale Line" clearly indicates cone locking. Bit was pulled and graded T4 : B8 two locked cones.

Was this article helpful?

0 0

Post a comment