Deviation when drilling deep RC holes

Keep RC Holes On Target – Without Beating Up Your String

Anyone who has drilled deep RC holes knows the problem (particularly in challenging ground): when the hole starts to wander, chatter increases and vibration comes up the string. Before long, you’re fighting deviation and swapping components. That combination –...

Deviation when drilling deep RC holes

by | | Article Library, Main Problems When Drilling

Back in 2011, Harley Hollier at Harlsan was approached by a customer regarding a problem they had drilling 360m deep Reverse Circulation holes. Some of the holes had deviated more than 5 degrees off the intended azimuth when measured at the bottom of the hole. As the...

Keep RC Holes On Target – Without Beating Up Your String

Deviation when drilling deep RC holes

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