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Class Information
Number: 175/230
Name: Boring or penetrating the earth > With expansible bore wall anchor (e.g., packer)
Description: Apparatus in which the tool, tool shaft or housing is provided with a means which is adapted to expand laterally to engage the wall of the borehole or casing to resist or prevent the movement of the tool, tool shaft or housing or a portion thereof due to the action of gravity or a lifting force.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8657001 Downhole release joint Feb. 25, 2014
8555963 Gripper assembly for downhole tools Oct. 15, 2013
8485281 Equipment for drilling secant holes Jul. 16, 2013
8353354 Crawler system for an earth boring system Jan. 15, 2013
8302679 Expandable ramp gripper Nov. 6, 2012
8245796 Tractor with improved valve system Aug. 21, 2012
8230914 Anchor tool Jul. 31, 2012
8069917 Gripper assembly for downhole tools Dec. 6, 2011
8028766 Electrically powered tractor Oct. 4, 2011
8020634 Method and apparatus for supporting a downhole component in a downhole drilling tool Sep. 20, 2011
7874380 Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material Jan. 25, 2011
7770667 Electrically powered tractor Aug. 10, 2010
7686076 Expandable tubulars for use in a wellbore Mar. 30, 2010
7686100 Technique and apparatus for drilling and completing a well in one half trip Mar. 30, 2010
7624808 Expandable ramp gripper Dec. 1, 2009
7539548 Smart-control PLC based touch screen driven remote control panel for BOP control unit May. 26, 2009
7478686 One trip well drilling to total depth Jan. 20, 2009
7343983 Method and apparatus for isolating and testing zones during reverse circulation drilling Mar. 18, 2008
7287608 Method and device for drilling a hole in soil or rock material and for forming an anchoring Oct. 30, 2007
7275593 Gripper assembly for downhole tools Oct. 2, 2007
7216700 Torsional resistant slip mechanism and method May. 15, 2007
7204325 Spring mechanism for downhole steering tool blades Apr. 17, 2007
7191829 Gripper assembly for downhole tools Mar. 20, 2007
7121364 Tractor with improved valve system Oct. 17, 2006
7090037 Device for anchoring a drill string in a borehole Aug. 15, 2006
7086481 Wellbore isolation apparatus, and method for tripping pipe during underbalanced drilling Aug. 8, 2006
7066281 Formation fluid sampling and hydraulic testing tool and packer assembly therefor Jun. 27, 2006
7048047 Gripper assembly for downhole tools May. 23, 2006
6981560 Method and apparatus for treating a productive zone while drilling Jan. 3, 2006
6955232 Equipment for drilling vertical boreholes Oct. 18, 2005
6761233 Apparatus for propulsion in elongated cavities Jul. 13, 2004
6715559 Gripper assembly for downhole tractors Apr. 6, 2004
6640894 Gripper assembly for downhole tools Nov. 4, 2003
6588542 Borehole tool actuating mechanism Jul. 8, 2003
6578638 Drillable inflatable packer & methods of use Jun. 17, 2003
6561269 Canister, sealing method and composition for sealing a borehole May. 13, 2003
6530428 Method and apparatus for in-situ production well testing Mar. 11, 2003
6516898 Continuous wellbore drilling system with stationary sensor measurements Feb. 11, 2003
6464003 Gripper assembly for downhole tractors Oct. 15, 2002
6431291 Packerfoot with bladder assembly having reduced likelihood of bladder delamination Aug. 13, 2002
6343650 Test, drill and pull system and method of testing and drilling a well Feb. 5, 2002
6315075 Borehole logging tool with anchoring mechanism Nov. 13, 2001
6296056 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production Oct. 2, 2001
6179055 Conveying a tool along a non-vertical well Jan. 30, 2001
6148912 Subsurface measurement apparatus, system, and process for improved well drilling control and production Nov. 21, 2000
6119774 Caged slip system Sep. 19, 2000
5954131 Method and apparatus for conveying a logging tool through an earth formation Sep. 21, 1999
5827014 Friction rock stabilizer Oct. 27, 1998
5758732 Control device for drilling a bore hole Jun. 2, 1998
5752572 Tractor for remote movement and pressurization of a rock drill May. 19, 1998

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