WWT NRPs Reduce Torque in Challenge well - Middle East

Executive Summary

This well had high friction factors at the start of the run. Back models showed that the FF reached over 0.40 CH and 0.45 OH when drilling with WBM.

Adding lubricants gradually to reach 2.5% lub reduced the FF to around 0.30/0.36, and the lubricant % was held steady at 2.5% to TD.

WWT NRPs entered the hole at 16,950 ft bit depth and started covering the critical area from 17,500ft bit depth. BackmodeledFF dropped to below 0.25/0.30 and showed NRP benefit reaching 20% from projected torque with FF 0.25/0.30., and around 30% reduction from projected torque with FF=0.30/0.36. At TD torque reduction benefit could be back modeled at 22% from FF= 0.30/0.36

High Torque With WBM

Added lubricant reduced friction factors to 0.30/0.36.

NRPs reduced torque further to show 22% reduction at TD

WWT Non RotatingProtectors performed their optimal benefits within adequate wellbore conditions:

At up to 80% local friction reduction