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Class Information
Number: 175/408
Name: Boring or penetrating the earth > Bit or bit element > With bit guide or bore wall compacting device
Description: Apparatus provided with (1) means on the bit for centralizing or stabilizing the bit in the bore or (2) a device to smooth or compress together the material which makes up the wall surface of the bore.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7341119 |
Hydro-lifter rock bit with PDC inserts |
Mar. 11, 2008 |
| 7188690 |
Drilling device and method for producing undercut holes |
Mar. 13, 2007 |
| 6971459 |
Stabilizing system and methods for a drill bit |
Dec. 6, 2005 |
| 6883623 |
Earth boring apparatus and method offering improved gage trimmer protection |
Apr. 26, 2005 |
| 6851489 |
Method and apparatus for drilling wells |
Feb. 8, 2005 |
| 6688410 |
Hydro-lifter rock bit with PDC inserts |
Feb. 10, 2004 |
| 6684967 |
Side cutting gage pad improving stabilization and borehole integrity |
Feb. 3, 2004 |
| 6615935 |
Roller cone bits with wear and fracture resistant surface |
Sep. 9, 2003 |
| 6607047 |
Earth-boring bit with wear-resistant shirttail |
Aug. 19, 2003 |
| 6568492 |
Drag-type casing mill/drill bit |
May. 27, 2003 |
| 6427792 |
Active gauge cutting structure for earth boring drill bits |
Aug. 6, 2002 |
| 6394200 |
Drillout bi-center bit |
May. 28, 2002 |
| 6349780 |
Drill bit with selectively-aggressive gage pads |
Feb. 26, 2002 |
| 6321862 |
Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability |
Nov. 27, 2001 |
| 6302223 |
Rotary drag bit with enhanced hydraulic and stabilization characteristics |
Oct. 16, 2001 |
| 6290007 |
Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability |
Sep. 18, 2001 |
| 6260636 |
Rotary-type earth boring drill bit, modular bearing pads therefor and methods |
Jul. 17, 2001 |
| 6253863 |
Side cutting gage pad improving stabilization and borehole integrity |
Jul. 3, 2001 |
| 6234261 |
Method of applying a wear-resistant layer to a surface of a downhole component |
May. 22, 2001 |
| 6206117 |
Drilling structure with non-axial gage |
Mar. 27, 2001 |
| 6173797 |
Rotary drill bits for directional drilling employing movable cutters and tandem gage pad arrangement with active cutting elements and having up-drill capability |
Jan. 16, 2001 |
| 6138780 |
Drag bit with steel shank and tandem gage pads |
Oct. 31, 2000 |
| 6123160 |
Drill bit with gage definition region |
Sep. 26, 2000 |
| 6119797 |
Single cone earth boring bit |
Sep. 19, 2000 |
| 6112836 |
Rotary drill bits employing tandem gage pad arrangement |
Sep. 5, 2000 |
| 6006845 |
Rotary drill bits for directional drilling employing tandem gage pad arrangement with reaming capability |
Dec. 28, 1999 |
| 5979576 |
Anti-whirl drill bit |
Nov. 9, 1999 |
| 5967247 |
Steerable rotary drag bit with longitudinally variable gage aggressiveness |
Oct. 19, 1999 |
| 5957223 |
Bi-center drill bit with enhanced stabilizing features |
Sep. 28, 1999 |
| 5890550 |
Earth-boring bit with wear-resistant material |
Apr. 6, 1999 |
| 5873422 |
Anti-whirl drill bit |
Feb. 23, 1999 |
| 5803194 |
Wear protector for a drilling tool |
Sep. 8, 1998 |
| 5697737 |
Support pad for drill |
Dec. 16, 1997 |
| 5697461 |
Rotary drill bit having a non-rotating gauge section |
Dec. 16, 1997 |
| 5671817 |
Drill bit with dual reaming rows |
Sep. 30, 1997 |
| 5655612 |
Earth-boring bit with shear cutting gage |
Aug. 12, 1997 |
| 5651421 |
Rotary drill bits |
Jul. 29, 1997 |
| 5560439 |
Method and apparatus for reducing the vibration and whirling of drill bits and the bottom hole assembly in drilling used to drill oil and gas wells |
Oct. 1, 1996 |
| 5494123 |
Drill bit with protruding insert stabilizers |
Feb. 27, 1996 |
| 5467836 |
Fixed cutter bit with shear cutting gage |
Nov. 21, 1995 |
| 5415243 |
Rock bit borhole back reaming method |
May. 16, 1995 |
| 5402856 |
Anti-whirl underreamer |
Apr. 4, 1995 |
| 5339910 |
Drilling torsional friction reducer |
Aug. 23, 1994 |
| 5289889 |
Roller cone core bit with spiral stabilizers |
Mar. 1, 1994 |
| 5234063 |
Removable wear protective means for a drilling tool |
Aug. 10, 1993 |
| 5163524 |
Rotary drill bits |
Nov. 17, 1992 |
| 5147000 |
Disc drill bit |
Sep. 15, 1992 |
| 5131478 |
Low friction subterranean drill bit and related methods |
Jul. 21, 1992 |
| 5119892 |
Notary drill bits |
Jun. 9, 1992 |
| 5109935 |
Rotary drill bits |
May. 5, 1992 |
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