Schlumberger

Brochure: Spear PDC Drill Bits (Chinese)

Date: 6/5/2013

Download: Spear PDC Drill Bits (Chinese) (5.71 MB PDF)

Next-generation shale-optimized steel-body PDC drill bits

Introduced in 2011, the Spear shale-optimized steel-body PDC drill bit significantly reduced bit balling and cuttings that tended to pack around the blades of matrix-body bits. Characterized by its distinctive bullet shape and smaller diameter steel body, the streamlined Spear bit put more distance between the bit body and borehole. This helped increase cuttings evacuation by minimizing blade packing and nozzle plugging, allowing the bit to drill more efficiently.

Based on Spear bit performances, and a redesign program conducted by Smith Bits, using the IDEAS integrated drillbit design platform, the next-generation Spear bit has demonstrated greater directional control and ROP increases of up to 40%.

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