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Class Information
Number: 175/39
Name: Boring or penetrating the earth > With bit wear signal generating
Description: Process or apparatus comprising a step or means for initiating a signal when a specified condition relating to wear of the bit occurs.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7600581 |
Downhole abrading tools having fusible material and uses therefor |
Oct. 13, 2009 |
| 7575070 |
Downhole abrading tools having excessive wear indicator |
Aug. 18, 2009 |
| 7565928 |
Downhole abrading tool having a taggant injection assembly for indicating excessive wear |
Jul. 28, 2009 |
| 7484571 |
Downhole abrading tools having excessive wear indicator |
Feb. 3, 2009 |
| 7424910 |
Downhole abrading tools having a hydrostatic chamber and uses therefor |
Sep. 16, 2008 |
| 7404456 |
Apparatus and method of identifying rock properties while drilling |
Jul. 29, 2008 |
| 7404457 |
Downhole abrading tools having fusible material and methods of detecting tool wear |
Jul. 29, 2008 |
| 7363988 |
System and method for processing and transmitting information from measurements made while drilling |
Apr. 29, 2008 |
| 7357197 |
Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface |
Apr. 15, 2008 |
| 7356450 |
Methods for designing roller cone bits by tensile and compressive stresses |
Apr. 8, 2008 |
| 7318488 |
Method for classifying data measured during drilling operations |
Jan. 15, 2008 |
| 7316278 |
Method for determining drilling malfunction by correlation of drilling operating parameters and drilling response parameters |
Jan. 8, 2008 |
| 7261167 |
Method and system for predicting performance of a drilling system for a given formation |
Aug. 28, 2007 |
| 7258175 |
Method and apparatus and program storage device adapted for automatic drill bit selection based on earth properties and wellbore geometry |
Aug. 21, 2007 |
| 7140452 |
Method and apparatus for determining drill string movement mode |
Nov. 28, 2006 |
| 7114578 |
Method and apparatus for determining drill string movement mode |
Oct. 3, 2006 |
| 7100708 |
Autodriller bit protection system and method |
Sep. 5, 2006 |
| 7032689 |
Method and system for predicting performance of a drilling system of a given formation |
Apr. 25, 2006 |
| 6986395 |
Force-balanced roller-cone bits, systems, drilling methods, and design methods |
Jan. 17, 2006 |
| 6968909 |
Realtime control of a drilling system using the output from combination of an earth model and a drilling process model |
Nov. 29, 2005 |
| 6856949 |
Wear compensated roller cone drill bits |
Feb. 15, 2005 |
| 6817425 |
Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator |
Nov. 16, 2004 |
| 6814162 |
One cone bit with interchangeable cutting structures, a box-end connection, and integral sensory devices |
Nov. 9, 2004 |
| 6725947 |
Roller bits with bearing failure indication, and related methods, systems, and methods of manufacturing |
Apr. 27, 2004 |
| 6722450 |
Adaptive filter prediction method and system for detecting drill bit failure and signaling surface operator |
Apr. 20, 2004 |
| 6648082 |
Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator |
Nov. 18, 2003 |
| 6634441 |
System and method for detecting roller bit bearing wear through cessation of roller element rotation |
Oct. 21, 2003 |
| 6631772 |
Roller bit rearing wear detection system and method |
Oct. 14, 2003 |
| 6619411 |
Design of wear compensated roller cone drill bits |
Sep. 16, 2003 |
| 6510906 |
Impregnated bit with PDC cutters in cone area |
Jan. 28, 2003 |
| 6484824 |
Failure indicator for rolling cutter drill bit |
Nov. 26, 2002 |
| 6408953 |
Method and system for predicting performance of a drilling system for a given formation |
Jun. 25, 2002 |
| 6386297 |
Method and apparatus for determining potential abrasivity in a wellbore |
May. 14, 2002 |
| 6374926 |
Method of assaying downhole occurrences and conditions |
Apr. 23, 2002 |
| 6205851 |
Method for determining drill collar whirl in a bottom hole assembly and method for determining borehole size |
Mar. 27, 2001 |
| 6167833 |
Wear indicator for rotary drilling tools |
Jan. 2, 2001 |
| 6131673 |
Method of assaying downhole occurrences and conditions |
Oct. 17, 2000 |
| 6109368 |
Method and system for predicting performance of a drilling system for a given formation |
Aug. 29, 2000 |
| 6068394 |
Method and apparatus for providing dynamic data during drilling |
May. 30, 2000 |
| 5864058 |
Detecting and reducing bit whirl |
Jan. 26, 1999 |
| 5794720 |
Method of assaying downhole occurrences and conditions |
Aug. 18, 1998 |
| 5679894 |
Apparatus and method for drilling boreholes |
Oct. 21, 1997 |
| 5415030 |
Method for evaluating formations and bit conditions |
May. 16, 1995 |
| 5305836 |
System and method for controlling drill bit usage and well plan |
Apr. 26, 1994 |
| 5216917 |
Method of determining the drilling conditions associated with the drilling of a formation with a drag bit |
Jun. 8, 1993 |
| 5138875 |
Method of monitoring the drilling of a borehole |
Aug. 18, 1992 |
| 5044198 |
Method of predicting the torque and drag in directional wells |
Sep. 3, 1991 |
| 4928521 |
Method of determining drill bit wear |
May. 29, 1990 |
| 4926950 |
Method for monitoring the wear of a rotary type drill bit |
May. 22, 1990 |
| 4926686 |
Method for determining the wear of the cutting means of a tool during drilling a rocky formation |
May. 22, 1990 |
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