Case Study: ONGC achieves 100% higher ROP and lower cost per meter with SLB’s StingBlade bit

ONGC Increases ROP by 100% Using a StingBlade Bit with RockStorm Technology Offshore India

ONGC needed to drill 300 m through a very hard, abrasive basalt formation in offshore India and wanted to reduce the number of roller cone bit runs needed to complete the well section. SLB proposed using a 12¼-in Z813 StingBlade bit with RockStorm wear-resistant high-impact PDC cutter technology, based on simulation work for this hard-to-drill application.

SLB’s StingBlade bit drilled 229 m of basalt in one run at an average ROP of 2.2 m/h, more than doubling the offset average ROP of 1.1 m/h and setting the field’s lowest cost per meter while drilling basalt. The run eliminated 6 bit runs, and it was the first StingBlade bit run in basalt worldwide.

ONGC