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Class Information
Number: 175/325.4
Name: Boring or penetrating the earth > With tool shaft detail > Shaft carried guide or protector > Coupled between shaft sections or bit and shaft section > Having removable inserts
Description: Apparatus where a bore wall contacting portion is readily placed in or removed from a slot or an aperture in the guide or protector means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8689877 |
Downhole tool |
Apr. 8, 2014 |
| 8678091 |
Magnetic retrieval apparatus and method for retaining magnets on a downhole magnetic retrieval apparatus |
Mar. 25, 2014 |
| 8672030 |
System for cementing tubulars comprising a mud motor |
Mar. 18, 2014 |
| 8622153 |
Downhole assembly |
Jan. 7, 2014 |
| 8434571 |
Securement of lines to downhole well tools |
May. 7, 2013 |
| 8205687 |
Compound engagement profile on a blade of a down-hole stabilizer and methods therefor |
Jun. 26, 2012 |
| 8083011 |
Matrix turbine sleeve and method for making same |
Dec. 27, 2011 |
| 7954567 |
Adjustable winged centering tool for use in pipes with varying diameter |
Jun. 7, 2011 |
| 7650952 |
Passive vertical drilling motor stabilization |
Jan. 26, 2010 |
| 7600587 |
Wear resistant sleeve for sub assembly |
Oct. 13, 2009 |
| 7458430 |
Attachment means for drilling equipment |
Dec. 2, 2008 |
| 7395881 |
Roller subs |
Jul. 8, 2008 |
| 7188689 |
Variable gauge drilling apparatus and method of assembly therefor |
Mar. 13, 2007 |
| 7048064 |
Multi-unit centralizer |
May. 23, 2006 |
| 6957708 |
Electrical imaging in conductive and non-conductive mud |
Oct. 25, 2005 |
| 6899174 |
Floating instrument insert for a tool |
May. 31, 2005 |
| 6851489 |
Method and apparatus for drilling wells |
Feb. 8, 2005 |
| 6830103 |
Roller subs |
Dec. 14, 2004 |
| 6776247 |
Stabilizer tool block wear pad assembly |
Aug. 17, 2004 |
| 6343648 |
Down-hole tool with detachable cleaning pads |
Feb. 5, 2002 |
| 6223840 |
Cutting bed impeller |
May. 1, 2001 |
| 6102142 |
Drilling tool with shock absorbers |
Aug. 15, 2000 |
| 6098727 |
Electrically insulating gap subassembly for downhole electromagnetic transmission |
Aug. 8, 2000 |
| 5937957 |
Cutting bed impeller |
Aug. 17, 1999 |
| 5868212 |
Stabiliser tool |
Feb. 9, 1999 |
| 5803194 |
Wear protector for a drilling tool |
Sep. 8, 1998 |
| 5788000 |
Stabilizer-reamer for drilling an oil well |
Aug. 4, 1998 |
| 5474143 |
Drill bit reamer stabilizer |
Dec. 12, 1995 |
| 5447207 |
Downhole tool |
Sep. 5, 1995 |
| 5343964 |
Petroleum, gas or geothermal driling apparatus |
Sep. 6, 1994 |
| 5339914 |
Adjustable drilling mechanism |
Aug. 23, 1994 |
| 5224558 |
Down hole drilling tool control mechanism |
Jul. 6, 1993 |
| 5058689 |
Wear protective means for a drilling tool |
Oct. 22, 1991 |
| 5042600 |
Drill pipe with helical ridge for drilling highly angulated wells |
Aug. 27, 1991 |
| 5012863 |
Pipe milling tool blade and method of dressing same |
May. 7, 1991 |
| 4995466 |
Method and device for stabilizing the path of a drilling tool |
Feb. 26, 1991 |
| 4958692 |
Downhole stabilizers |
Sep. 25, 1990 |
| 4877092 |
Near bit offset stabilizer |
Oct. 31, 1989 |
| 4862974 |
Downhole drilling assembly, apparatus and method utilizing drilling motor and stabilizer |
Sep. 5, 1989 |
| 4854403 |
Stabilizer for deep well drilling tools |
Aug. 8, 1989 |
| 4854399 |
Tubular element for use in a rotary drilling assembly |
Aug. 8, 1989 |
| 4848490 |
Downhole stabilizers |
Jul. 18, 1989 |
| 4848488 |
Method and device for adjusting the path of a drilling tool fixed to the end of a set of rods |
Jul. 18, 1989 |
| 4844178 |
Drilling device having a controlled path |
Jul. 4, 1989 |
| 4842083 |
Drill bit stabilizer |
Jun. 27, 1989 |
| 4821817 |
Actuator for an appliance associated with a ducted body, especially a drill rod |
Apr. 18, 1989 |
| 4776410 |
Stabilizing tool for well drilling |
Oct. 11, 1988 |
| 4754821 |
Locking device |
Jul. 5, 1988 |
| 4739843 |
Apparatus for lateral drilling in oil and gas wells |
Apr. 26, 1988 |
| 4710074 |
Casing mill |
Dec. 1, 1987 |
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