Objectives: Download PDF

Run 7” liner in 9 ½” hole to TD @ 90° in unstable zones, at first attempt
Drill-thru available
Cement as per program

Well Background & Challenges:

Offset wells experienced hole instability
Risk Register: unable to reach TD with liner P3
Unstable shales, coals and paleosoils
Back-reaming and sticky hole when POOH for liner


7” liner held up 44KLbs 2194 ft off-bottom
Unable to rotate/slide – used Turbocaser Express
Reamed total of 2194 ft in 15.4 hours @141 ft/hr avg
Cemented as normal

Value to client:

Completion Liner to TD first time, no rathole
No NPT costs incurred
Confirmed technology value in Norwegian lithology