1
David Truax, Timothy P Beaton: Asymmetric diamond impregnated drill bit. Smith International, Rosenthal & Osha L, November 5, 2002: US06474425 (160 worldwide citation)

A drill bit including a bit body and a plurality of blades formed in the bit body. The blades are formed, at least in part, from a base matrix material that on one embodiment is impregnated with abrasive particles. One side of the bit is formed, with respect to its axis of rotation, to a smaller rad ...


2
Timothy P Beaton: Directional drift and drill PDC drill bit. Smith International, Rosenthal & Osha, March 21, 2000: US06039131 (137 worldwide citation)

A PDC bit for cutting a hole below a point in a formation, the diameter of the hole being greater than the diameter of the hole above the point, comprising: a bit body having an axis of rotation, a first cutting portion having a first radial extent from the axis of rotation, a second cutting portion ...


3
Timothy P Beaton, David Truax: Bi-centered drill bit having improved drilling stability mud hydraulics and resistance to cutter damage. Smith International, Rosenthal & Osha L, August 7, 2001: US06269893 (112 worldwide citation)

A bi-center drill bit includes pilot and reaming blades affixed to a body at azimuthally spaced locations. The blades have PDC cutters attached at selected positions. In one aspect, the pilot blades form a section having length along the bit axis less than about 80 percent of a diameter of the secti ...


4
Timothy P Beaton: Impregnated type rotary drill bits. Camco International, Tobor Goldstein & Healey L, January 4, 2000: US06009962 (50 worldwide citation)

A rotary drill bit comprises a bit body having a leading surface formed at least in part from solid infiltrated matrix material, a major part of the leading surface being impregnated with abrasive particles of diamond or other superhard material. There are also mounted at the leading surface a plura ...


5
Timothy P Beaton: Polycrystaline diamond compact insert reaming tool. Smith International, Rosenthal & Osha L, May 14, 2002: US06386302 (50 worldwide citation)

A reamer for drilling a hole having a diameter larger than a pass through diameter in one aspect includes a body having reaming blades affixed at azimuthally spaced apart locations. These blades have cutters attached at selected positions. An outermost surface of each blade conforms to a radially le ...


6
Kenneth M Nevlud, Timothy P Beaton: Concentric expandable reamer and method. Smith International, Conley Rose P C, February 24, 2009: US07493971 (37 worldwide citation)

An expandable downhole tool comprises a tubular body, at least one moveable arm disposed within the tubular body and being radially translatable between a retracted position and a wellbore engaging position, and at least one piston operable to mechanically support the at least one moveable arm in th ...


7
Timothy P Beaton: Fixed blade fixed cutter hole opener. Smith International, Osha Liang, September 26, 2006: US07111694 (37 worldwide citation)

A hole opener including a tool body having upper and lower ends. The upper and lower ends may be coupled to adjacent drilling tools. At least two blades are formed on the tool body and are arranged so that the hole opener is positioned concentric with a wellbore, and cutting elements are located on ...


8
Timothy P Beaton: Fixed blade fixed cutter hole opener. Smith International, Osha & May L, June 1, 2004: US06742607 (36 worldwide citation)

A hole opener including a tool body having upper and lower ends. The upper and lower ends may be coupled to adjacent drilling tools. At least two blades are formed on the tool body and are arranged so that the hole opener is positioned concentric with a wellbore, and cuffing elements are located on ...


9
Timothy P Beaton: Rotary drill bits and methods of designing such drill bits. Camco International, Fletcher Yoder & Edwards, October 6, 1998: US05816346 (34 worldwide citation)

A rotary drill bit for drilling subsurface formations comprises a bit body having a shank for connection to a drill string, a plurality of primary blades and at least one secondary blade circumferentially spaced and extending outwardly away from a central axis of rotation of the bit, a plurality of ...


10
Carl M Hoffmaster, David K Truax, Timothy P Beaton: Advanced expandable reaming tool. Smith International, Osha & May L, April 19, 2005: US06880650 (19 worldwide citation)

An expandable reaming tool including at least two reamer pads connected to a tool body. The reamer pads are adapted to be displaced between a retracted position and an expanded position. At least one spiral blade is formed on at least one reamer pad. A plurality of cutting elements are disposed on t ...