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Class Information
Number: 166/177.3
Name: Wells > Wiper
Description: Apparatus having a means for cleaning the interior surface of a tubular well member.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8360141 Launching tool with interlock system for downhole cement plug and method Jan. 29, 2013
8146667 Dual gradient pipeline evacuation method Apr. 3, 2012
8127846 Wiper plug perforating system Mar. 6, 2012
8090227 Purging of fiber optic conduits in subterranean wells Jan. 3, 2012
7987906 Well bore tool Aug. 2, 2011
7918283 Method and apparatus for a cold flow subsea hydrocarbon production system Apr. 5, 2011
7845400 Launching tool for releasing cement plugs downhole Dec. 7, 2010
7845401 Telescoping wiper plug Dec. 7, 2010
7703523 Apparatus and method for use in a well bore Apr. 27, 2010
7681634 Apparatus for wiping the interior of pipes Mar. 23, 2010
7624806 Pipe cleaning tool and method Dec. 1, 2009
7475731 Sand plunger Jan. 13, 2009
7404436 Downhole tool Jul. 29, 2008
7395865 Gas lift plunger arrangement Jul. 8, 2008
7261153 Packer cups Aug. 28, 2007
7143829 Downhole tool Dec. 5, 2006
7028769 Well bore cleaning and tubular circulating and flow-back apparatus Apr. 18, 2006
6953086 Bi-directional traction apparatus Oct. 11, 2005
6901999 Swabbing tool for wells Jun. 7, 2005
6851480 Gas operated automatic, liquid pumping system for wells Feb. 8, 2005
6799638 Method, apparatus and system for selective release of cementing plugs Oct. 5, 2004
6745839 Borehole cleaning apparatus and method Jun. 8, 2004
6739391 Surface deployed cement separation plug May. 25, 2004
6725917 Downhole apparatus Apr. 27, 2004
6595282 Fluid filled drill pipe plug Jul. 22, 2003
6523612 Method and apparatus for cleaning wellbore casing Feb. 25, 2003
6513590 System for running tubular members Feb. 4, 2003
6491103 System for running tubular members Dec. 10, 2002
6460616 Traction apparatus Oct. 8, 2002
6453996 Apparatus incorporating jet pump for well head cleaning Sep. 24, 2002
6347667 Well clean-up tool with improved cleaning member Feb. 19, 2002
6311774 Method and apparatus for securing a well casing to a wellbore Nov. 6, 2001
6220356 Method and apparatus for well treating Apr. 24, 2001
5921320 Process and device for raising liquids from wells Jul. 13, 1999
5865245 Stuffing box gland Feb. 2, 1999
5836386 Wiping element for a drill pipe ID wiping device Nov. 17, 1998
5732774 Drill wiper assembly Mar. 31, 1998
5641018 Apparatus and method for cementing wells Jun. 24, 1997
5462115 Gas and oil well swab Oct. 31, 1995
5127472 Indicating ball catcher Jul. 7, 1992
5119874 Swab cup and swab assembly Jun. 9, 1992
5012866 Drill stem mud wiping apparatus May. 7, 1991
4923011 Drill stem mud wiping apparatus May. 8, 1990
4896720 Method and system for cleaning well casing Jan. 30, 1990
4658894 Well head pipe stripper Apr. 21, 1987
4607693 Side-entry sub Aug. 26, 1986
4580635 Automatic drill pipe inside wiper Apr. 8, 1986
4392528 Swabbing cup construction for swabbing an oil well pipe Jul. 12, 1983
4391324 Geothermal well head and actuator assembly Jul. 5, 1983
4299282 Well cleaner Nov. 10, 1981

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