- Analyse logging and survey data from original hole
- Select base of higher ROP interval as sidetrack point (probable over gauge hole overlying gauge hole)
- Sidetrack point with inclination or dog-leg in original hole will be advantageous
- Optimise cement slurry recipe (potential for gas cut)
- Confirm cement quality by drill off test
- BHA for first attempt should be capable of drilling to TD
- Should first attempt fail then dedicated sidetrack BHA with tri-cone bit and 2.2 deg bend motor should be used to initiate sidetrack.
- Dedicated sidetrack PDC bit (if available) should be on location