Reverse Circulation Articulated Bug Drill – Ocampo District in Mexico
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Layne Christensen Company is virtually unsurpassed with more than a half century in experience and knowledge in
applying the dual-wall reverse circulation method of drilling to specialized needs of mineral exploration. How it
works Using dual-wall drill pipe, the sample, as drilled, is returned uncontaminated through the inner pipe to the
surface sampling equipment. This technique and Layne's experience will maximize the geological sample recovery
in adverse drilling conditions. Advantages Uncontaminated Samples in high water-bearing formations. Faster
Penetration than standard rotary or core drilling. Lower Cost due to increased production, reduced bit and mud
additive costs. No Lost Circulation even through fractures, voids and joints. No Surface Casing as the outer pipe
supports the borehole while circulation is maintained internally. Straighter Holes as dual-wall pipe utilizes flush
joint pipe while drilling with minimum hole clearance.
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