RipSaw

Rather than rely on individual gut instinct, industry should look to trends from large-scale data sets to understand value and performance of new drill bits

The drilling industry has relied too long on comparative experience and “gut instinct” when assessing new products and technologies and how they affect drilling performance. This is a problematic approach because applications vary wildly, even on the same pad or location, and no two wells are ever really drilled in the same way.

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This originally appeared in World Oil Magazine OCTOBER 2019 issue, used with permission.

TRANSITIONAL DRILLING CHALLENGE

One of the biggest challenges facing the drilling industry is interfacial severity, or transitional drilling. This is broadly de­fined as layers of rock with different hard­ness that require the bit to drill through the transition, putting cutting forces on different parts of the profile. The imbal­ance of force concentration can induce vibration or even cause cutter overload, both of which lead to severe cutting struc­ture damage.

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