Pneumatic drilling chip removal system and method

Boring or penetrating the earth – Processes – Boring with specific fluid

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Details

175317, 175324, E21B 718, E21B 2110

Patent

active

055843522

ABSTRACT:
A pneumatic drilling chip removal system for removing drilling chips from a well bore, comprising sub-surface drilling equipment having a plurality of components and a drilling bit, a central passageway extending through the components and to the air jets in the drilling bit, wherein at least one component above the drilling bit in the sub-surface drilling equipment is a pneumatic component having an opening forming a pneumatic conduit from the central passageway to the annulus, a bypass valve disposed therein selectively permitting air flow from the central passageway to the annulus, forming a supplementary air source for removal of drilling chips from the well bore. Methods for using a pneumatic drilling chip removal system.

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patent: 5407020 (1995-04-01), Beavers

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