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Class Information
Number: 175/205
Name: Boring or penetrating the earth > With means providing pressurized gas contact with drilling liquid
Description: Apparatus including means which are provided for bringing a stream of gaseous fluid above atmospheric pressure into intimate contact with a body of drilling liquid which liquid is intended to be introduced or directed into a borehole.










Patents under this class:

Patent Number Title Of Patent Date Issued
8646549 Drilling machine power pack which includes a clutch Feb. 11, 2014
8517122 Air/water separator and methods of use thereof Aug. 27, 2013
8459376 System for drilling under balanced wells Jun. 11, 2013
8371399 Method and system for accessing subterranean deposits from the surface and tools therefor Feb. 12, 2013
8316966 Method and system for accessing subterranean deposits from the surface and tools therefor Nov. 27, 2012
8272456 Slim-hole parasite string Sep. 25, 2012
8127866 Air injection collar Mar. 6, 2012
7886849 System for drilling under-balanced wells Feb. 15, 2011
7516803 Air injection collar Apr. 14, 2009
7325629 Method and system for processing oil and gas well cuttings utilizing existing slurry processing equipment Feb. 5, 2008
7111695 Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium Sep. 26, 2006
7093662 System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud Aug. 22, 2006
7059426 Acoustic flow pulsing apparatus and method for drill string Jun. 13, 2006
7025154 Method and system for circulating fluid in a well system Apr. 11, 2006
6588501 Method and apparatus to reduce hydrostatic pressure in sub sea risers using buoyant spheres Jul. 8, 2003
6347675 Coiled tubing drilling with supercritical carbon dioxide Feb. 19, 2002
6032747 Water-based drilling fluid deacidification process and apparatus Mar. 7, 2000
5950736 Method and apparatus for improving drilling efficiency by application of a traveling wave to drilling fluid Sep. 14, 1999
5865261 Balanced or underbalanced drilling method and apparatus Feb. 2, 1999
5427190 Underground borer with down hammer Jun. 27, 1995
5330017 Method of processing drilling mud in earth-boring operations Jul. 19, 1994
4474252 Method and apparatus for drilling generally horizontal bores Oct. 2, 1984
4194567 Method and apparatus for balancing pressures in an oil well Mar. 25, 1980
3958650 Drilling system using weight of mud May. 25, 1976











 
 
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