WWT NRPs Protectors Provide Casing Protection at Sidetrack

Executive Summary

A Gulf of Mexico well required 14’’ casing protection at an 8°/100ft sidetrack. WWT installed 378 HD-SS3 658-slim model NRPs at 2 per joint due to excessive side force. The slim version was necessary for RCD compatibility, stripping NRPs out of hole with 350 psi backpressure. Due to excessive tar, a bypass section was also drilled and TD of 29,850 ft was successfully reached. Approximately 50 NRPs went into the open hole salt formation to protect the sidetrack point throughout both bit runs.

NRP Performance

• Max 7,400 lbf/NRP (stiff string model), ~21,000 lbf/joint (soft string model shown below).

• Cumulative 1,620 Krevs across the side track and bypass hole sections.

• Minimal NRPOD wear and no signs of DP wear, indicating the casing was protected throughout drilling.