Industry Article: Drill Bit Innovations Target Major Barriers to ROP, Durability

Manufacturers are developing new bits that address cuttings evacuation, vibration and thermal degradation while rearranging cutter layouts and seeking better understanding of failure mechanisms

Publication: Drilling Contractor
Publication Date: 03/01/2018

Drill Bit Innovations Target Major Barriers to ROP, Durability

The tungsten carbide inserts on the Xplorer Helix are arranged in a spiral configuration, as opposed to concentric rows. The spiral layout eliminates insert tracking, ensuring the cutting structure remains sharp.

by Kelli Ainsworth Robinson, Associate Editor

In March 2018, the Drilling Contractor’s Kelli Ainsworth Robinson interviewed Wiley Long, Bits and Drilling Tools Product Champion at Smith Bits, a Schlumberger company.

Long highlighted the Xplorer Helix spiral TCI configuration, the latest member of the Xplorer premium performance roller cone drill bit family. The new roller cone bit features a proprietary spiral layout of the TCI inserts that improves ROP over 20%—and even past 50% in some conditions.

“If you’re falling back into an existing crater, you’re not getting very efficient rock crushing,” he explained. The spiral layout eliminates this effect and ensures that every insert makes contact with fresh rock as the bit drills. Reducing insert tracking also prevents the inserts from breaking and allows the cutting structure to remain sharp.

Read the article on the Drilling Contractor website




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