Avoid Sudden Torque Spikes
In the torque tune feature, simulation software is used to select a cutter structure, and the cutters are oriented to enable control of the reactive torque and reduce stick/slip generated by the bit.
To avoid sudden torque spikes due to sudden changes in weight on bit (WOB), Lyng Drilling uses depth-of-cut limiting features, including
impact arrestors, protrusions behind the cutter and on top of ribs
recess of cutters into ribs, less than half of cutter sticking out of ribs.
Torque tune principle applied in Mexico
Based on previous experience in the Chicontepec area, a new bit was specially designed for Tajin, a Mexican field operated by the Schlumberger Integrated Project Management (IPM) team.
The LM5342M1 is a 6 3/4-in motor bit that was designed applying the Lyng torque tune principle. The company used simulation software to choose the optimal cutter structure and orientation. The new drill bit drilled 1,506 m at 44 m/h, establishing a new record, and saving over 40 h.
Throughout the section comprised of shales and sands with hard stringers, the BHA showed good stability and directional control.
For more information:
http://www.slb.com/services/drilling/drill_bits/type/pdc_bits/lyng_pdc_bits/torque_tune.aspx
In the torque tune feature, simulation software is used to select a cutter structure, and the cutters are oriented to enable control of the reactive torque and reduce stick/slip generated by the bit.
To avoid sudden torque spikes due to sudden changes in weight on bit (WOB), Lyng Drilling uses depth-of-cut limiting features, including
impact arrestors, protrusions behind the cutter and on top of ribs
recess of cutters into ribs, less than half of cutter sticking out of ribs.
Torque tune principle applied in Mexico
Based on previous experience in the Chicontepec area, a new bit was specially designed for Tajin, a Mexican field operated by the Schlumberger Integrated Project Management (IPM) team.
The LM5342M1 is a 6 3/4-in motor bit that was designed applying the Lyng torque tune principle. The company used simulation software to choose the optimal cutter structure and orientation. The new drill bit drilled 1,506 m at 44 m/h, establishing a new record, and saving over 40 h.
Throughout the section comprised of shales and sands with hard stringers, the BHA showed good stability and directional control.
For more information:
http://www.slb.com/services/drilling/drill_bits/type/pdc_bits/lyng_pdc_bits/torque_tune.aspx
