1
Eric Charles Sullivan, Theodore Edward Zaleski Jr, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Chih Lin: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn, April 1, 2003: US06540033 (102 worldwide citation)

An improved drill bit is provided with a sensor for monitoring an operating condition during drilling. A fastener system is provided for securing an erodible ball in a fixed position relative to a flow pathway until a predetermined operating condition is detected by the sensor, and for releasing the ...


2
Eric Charles Sullivan, Theodore Edward Zaleski Jr, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Chih Lin: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn, September 30, 2003: US06626251 (60 worldwide citation)

An improved drill bit is provided with a sensor for monitoring an operating condition during drilling. A fastener system is provided for securing an erodible ball in a fixed position relative to a flow pathway until a predetermined operating condition is detected by the sensor, and for releasing the ...


3
Eric Charles Sullivan, Theodore Edward Zaleski Jr, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Timothy K Marvel, Daniel E Ruff: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn, James E Walton, June 3, 2003: US06571886 (54 worldwide citation)

An improved drill bit includes a bit body, a coupling member formed at an upper shank portion. It further includes at least one sensor for monitoring at least one condition of the bit during drilling operations. In one embodiment the at least one sensor is a capacitor disposed in a lubrication pathw ...


4
Eric Charles Sullivan, Theodore Edward Zaleski Jr, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Chih Lin: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn, April 8, 2003: US06543312 (51 worldwide citation)

A drill bit for use in drilling operations in a wellbore, the drill bit having a bit body including a plurality of bit legs, each supporting a rolling cone cutter; a coupling member formed at an upper portion of the bit body; at least one temperature sensor for monitoring at least one temperature co ...


5
Eric Charles Sullivan, Theodore Edward Zaleski Jr, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Chih Lin: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn, May 15, 2001: US06230822 (48 worldwide citation)

A drill bit for use in drilling operations in a wellbore, the drill bit having a bit body including a plurality of bit legs, each supporting a rolling cone cutter; a coupling member formed at an upper portion of said bit body; at least one temperature sensor for monitoring at least one temperature c ...


6
Eric Charles Sullivan, Theodore Edward Zaleski Jr, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Timothy K Marvel, Daniel E Ruff: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Hill Law Firm, June 27, 2006: US07066280 (33 worldwide citation)

An improved drill bit for use in drilling operations in a wellbore comprising a bit body including a plurality of bit legs, each supporting a rolling cone cutter, a lubrication system for a rolling cone cutter, at least one lubrication sensor for monitoring at least one condition of said lubricant d ...


7
Eric Charles Sullivan, Theodore Edward Zaleski Jr, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Chih Lin: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn, July 16, 2002: US06419032 (24 worldwide citation)

An improved drill bit includes a condition sensor and a semiconductor memory. The condition sensor includes an electrical sensor which has an attribute which changes in response to changes in the bit condition. Monitoring and sampling circuits are utilized to record this data into the semiconductor ...


8
Glenn R Zadrapa, Gregory L Ricks, Kenneth C Brannon, Robert E Grimes, Kevin W Schader: Inclined leg earth-boring bit. Baker Hughes, James E Bradley, Bracewell & Patterson L, May 8, 2001: US06227314 (8 worldwide citation)

An earth-boring bit has a body with a threaded pin on the upper end for connecting to a drill string. Bit legs are formed symmetrically on the exterior of the body and extend downward. The lower portion of each bit leg is inclined and offset circumferentially from the upper portion. A cutter is moun ...


9
Eric Charles Sullivan, Theodore Edward Zaleski, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Chih Lin: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn Esq, Hill & Hunn, December 27, 2001: US20010054514-A1

A drill bit for use in drilling operations in a wellbore, the drill bit having a bit body including a plurality of bit legs, each supporting a rolling cone cutter; a coupling member formed at an upper portion of said bit body; at least one temperature sensor for monitoring at least one temperature c ...


10
Eric Charles Sullivan, Theodore Edward Zaleski, Scott Ray Schmidt, Don Quy Nguyen, Glenn R Zadrapa, Chih Lin: Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations. Baker Hughes Incorporated, Melvin A Hunn Esq, Hill & Hunn, November 11, 2004: US20040222018-A1

A drill bit for use in drilling operations in a wellbore, the drill bit having a bit body including a plurality of bit legs, each supporting a rolling cone cutter; a coupling member formed at an upper portion of said bit body; at least one temperature sensor for monitoring at least one temperature c ...