TREA

Methods or apparatus for flushing boreholes

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Industry

  • CPC
  • E21B21/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21BEARTH DRILLING

Current Industry

E21B21/00Methods or apparatus for flushing boreholes

Sub Industries

E21B21/001specially adapted for underwater drilling E21B21/002Down-hole drilling fluid separation systems E21B21/003Means for stopping loss of drilling fluid E21B21/01Arrangements for handling drilling fluids or cuttings outside the borehole E21B21/012using exhaust air from the drilling motor for blowing off the dust at the borehole entrance E21B21/015Means engaging the bore entrance E21B21/02Swivel joints in hose-lines E21B21/06Arrangements for treating drilling fluids outside the borehole E21B21/062by mixing components E21B21/063by separating components E21B21/065Separating solids from drilling fluids E21B21/066with further treatment of the solids E21B21/067Separating gases from drilling fluids E21B21/068using chemical treatment E21B21/07for treating dust-laden gaseous fluids E21B21/08Controlling or monitoring pressure or flow of drilling fluid E21B21/10Valve arrangements in drilling fluid circulation systems E21B21/103Down-hole by-pass valve arrangements E21B21/106Valve arrangements outside the borehole E21B21/12using drilling pipes with plural fluid passages E21B21/14using liquids and gases E21B21/16using gaseous fluids E21B21/18Preventing exhaust air from the drill motor from blowing-off towards the working face
Industries