Dual cutting structure on hybrid roller cone bit increases efficiency of bridge, frac plug drill-outs

摘要

DRILLING OUT BRIDGE AND FRAC plugs is a regular and inefficient task in multi-zone completions. The job is commonly done using a variety of standard drill bits. However, removing between 15 and 40 plugs comprised of hard outer slips surrounded by ductile composites and elastomer materials presents several challenges to bit performance. Like drilling operations, the completion objective is to efficiently drill as much as possible before having to pull out of hole to replace the bit.