Optimized BHA drills longer distance in fewer days, saves operator USD 3.5 million
The BHA drilled 1,140.2 m in one run at an average ROP of 38.4 m/h. The bent-motor BHA maintained verticality throughout the section without any corrections and had a 0.08° difference in inclination from the beginning to the end of the run. The section was drilled without any significant shock or vibration, retaining the bit's good cutter condition.
The optimized BHA and operating parameters enabled Starc Limited to drill an additional 220 m while still completing the 12 1/4-in hole section 3.5 days ahead of schedule, resulting in cost savings of USD 3.5 million. Starc Limited used Smith drill bits to drill the entire well, which was completed 6.5 days ahead of AFE plan, saving the operator more than USD 6 million.