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Class Information
Number: 175/257
Name: Boring or penetrating the earth > Tool removable or insertable through or around driving or driven shaft or casing
Description: Apparatus comprising a tool and a shaft or casing to drive the tool or be driven by the tool, said tool being adapted to be connected to or disconnected from driving relation with the shaft or casing by movement either (1) through the inside of said shaft or casing or (2) externally of the shaft or casing in the space between the shaft or casing and the bore wall, the movement of the tool being to or from a position below ground while the shaft or casing is in the borehole and without the removal of the latter from the borehole.

Sub-classes under this class:

Class Number Class Name Patents
175/258 Laterally shiftable cutter element movable through shaft 32
175/262 Tool movable exteriorly of shaft 19

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8646548 Apparatus and system to allow tool passage ahead of a bit Feb. 11, 2014
8579048 Drilling device and drilling method Nov. 12, 2013
8479843 System for drilling a wellbore Jul. 9, 2013
8443906 Tools and methods useful with wellbore reverse circulation May. 21, 2013
8439131 Drill bit assembly and method of performing an operation in a wellbore May. 14, 2013
8371398 Downhole fluid loss control apparatus Feb. 12, 2013
8333255 High productivity core drilling system Dec. 18, 2012
8286731 Method and apparatus for constructing deep vertical boreholes and underground cut-off walls Oct. 16, 2012
8281878 Method of drilling and running casing in large diameter wellbore Oct. 9, 2012
8276689 Methods and apparatus for drilling with casing Oct. 2, 2012
8264532 Through-mill wellbore optical inspection and remediation apparatus and methodology Sep. 11, 2012
8233289 Multilayer wiring substrate and method for manufacturing the same Jul. 31, 2012
8146672 Method and apparatus for retrieving and installing a drill lock assembly for casing drilling Apr. 3, 2012
8074742 Apparatus and method for cutting a wellbore Dec. 13, 2011
8056649 Apparatus and methods for drilling wellbores that utilize a detachable reamer Nov. 15, 2011
7975771 Method for running casing while drilling system Jul. 12, 2011
7845431 Retrieval tool with slips for retrieving bottom hole assembly during casing while drilling operations Dec. 7, 2010
7841400 Apparatus and system to allow tool passage ahead of a bit Nov. 30, 2010
7836977 Method of drilling a well at or under balance using a electrical submersible pump Nov. 23, 2010
7798251 Circulation system for retrieval of bottom hole assembly during casing while drilling operations Sep. 21, 2010
7775302 Casing shoe and retrievable bit assembly Aug. 17, 2010
7770655 Conductor casing installation by anchor handling/tug/supply vessel Aug. 10, 2010
7770669 Auger and hole stabilization combination system Aug. 10, 2010
7766101 System and method for making drilling parameter and or formation evaluation measurements during casing drilling Aug. 3, 2010
7708076 Method of using a drill in sand control liner May. 4, 2010
7647990 Method for drilling with a wellbore liner Jan. 19, 2010
7637330 Casing bottom hole assembly retrieval process Dec. 29, 2009
7607496 Drilling apparatus and system for drilling wells Oct. 27, 2009
7520343 Retrievable center bit Apr. 21, 2009
7445057 Method and apparatus for introducing elongate members into the ground Nov. 4, 2008
7416036 Latchable reaming bit Aug. 26, 2008
7413035 Reusable auger barrel Aug. 19, 2008
7287609 Drilling a borehole Oct. 30, 2007
7182156 System for overburden drilling Feb. 27, 2007
7143846 Method for drilling and drilling apparatus to enable reverse circulation Dec. 5, 2006
7108084 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells Sep. 19, 2006
6962215 Underbalanced well completion Nov. 8, 2005
6722454 Device for drilling, in particular percussion drilling or rotary percussion drilling, boreholes Apr. 20, 2004
6659204 Method and apparatus for recovering core samples under pressure Dec. 9, 2003
6640911 Device for connecting a tool to a drive Nov. 4, 2003
6536993 Pile and method for installing same Mar. 25, 2003
6513598 Drillable floating equipment and method of eliminating bit trips by using drillable materials for the construction of shoe tracks Feb. 4, 2003
6378631 Apparatus for recovering core samples at in situ conditions Apr. 30, 2002
6374924 Downhole drilling apparatus Apr. 23, 2002
6368021 Pile and method for installing same Apr. 9, 2002
6230825 Apparatus for recovering core samples under pressure May. 15, 2001
6206114 Tool for transporting cutting means to and from a ground drill Mar. 27, 2001
6196336 Method and apparatus for drilling boreholes in earth formations (drilling liner systems) Mar. 6, 2001
6173796 Sleeve for orientating a tool Jan. 16, 2001
6155360 Retractable drill bit system Dec. 5, 2000

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