Inventor
DEWEY CHARLES H
US63 patents
⚠️ This page may combine multiple inventors who share the name “DEWEY CHARLES H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SMITH INTERNATIONAL
35 patentsUS7314099B2Jan 1, 2008
Selectively actuatable expandable underreamer/stablizer
SMITH INTERNATIONAL135 citations99
US7048078B2May 23, 2006
Expandable underreamer/stabilizer
SMITH INTERNATIONAL115 citations99
US6732817B2May 11, 2004
Expandable underreamer/stabilizer
SMITH INTERNATIONAL381 citations99
US6289999B1Sep 18, 2001
Fluid flow control devices and methods for selective actuation of valves and hydraulic drilling tools
SMITH INTERNATIONAL152 citations99
US7513318B2Apr 7, 2009
Steerable underreamer/stabilizer assembly and method
SMITH INTERNATIONAL88 citations98
US6612383B2Sep 2, 2003
Method and apparatus for milling well casing and drilling formation
SMITH INTERNATIONAL126 citations98
US7506703B2Mar 24, 2009
Drilling and hole enlargement device
SMITH INTERNATIONAL48 citations96
US6648068B2Nov 18, 2003
One-trip milling system
SMITH INTERNATIONAL62 citations96
US6499537B1Dec 31, 2002
Well reference apparatus and method
SMITH INTERNATIONAL54 citations96
US4693328ASep 15, 1987
Expandable well drilling tool
SMITH INTERNATIONAL124 citations95
US4660657AApr 28, 1987
Underreamer
SMITH INTERNATIONAL99 citations95
US6752211B2Jun 22, 2004
Method and apparatus for multilateral junction
SMITH INTERNATIONAL82 citations94
US6378632B1Apr 30, 2002
Remotely operable hydraulic underreamer
SMITH INTERNATIONAL157 citations94
US5171139ADec 15, 1992
Moineau motor with conduits through the stator
SMITH INTERNATIONAL99 citations94
US6935431B2Aug 30, 2005
Well reference apparatus and method
SMITH INTERNATIONAL17 citations93
US6648069B2Nov 18, 2003
Well reference apparatus and method
SMITH INTERNATIONAL14 citations93
US6554062B1Apr 29, 2003
Anchor apparatus and method
SMITH INTERNATIONAL46 citations93
US6543536B2Apr 8, 2003
Well reference apparatus and method
SMITH INTERNATIONAL28 citations93
US6354375B1Mar 12, 2002
Lateral well tie-back method and apparatus
SMITH INTERNATIONAL42 citations93
US5894889AApr 20, 1999
One trip milling system
SMITH INTERNATIONAL49 citations93
US5771972AJun 30, 1998
One trip milling system
SMITH INTERNATIONAL83 citations93
US7207401B2Apr 24, 2007
One trip milling system
SMITH INTERNATIONAL32 citations92
US7448446B2Nov 11, 2008
Thru tubing tool and method
SMITH INTERNATIONAL16 citations90
US7178589B2Feb 20, 2007
Thru tubing tool and method
SMITH INTERNATIONAL26 citations90
US7757787B2Jul 20, 2010
Drilling and hole enlargement device
SMITH INTERNATIONAL34 citations89
US6032748AMar 7, 2000
Non-rotatable stabilizer and torque reducer
SMITH INTERNATIONAL81 citations89
US7861802B2Jan 4, 2011
Flexible directional drilling apparatus and method
SMITH INTERNATIONAL12 citations84
US7597158B2Oct 6, 2009
Drilling and hole enlargement device
SMITH INTERNATIONAL9 citations84
US6899183B2May 31, 2005
Casing attachment method and apparatus
SMITH INTERNATIONAL14 citations84
US6568480B2May 27, 2003
Orientation and locator system and method of use
SMITH INTERNATIONAL17 citations84
US7377328B2May 27, 2008
Expandable anchor
SMITH INTERNATIONAL18 citations83
US7373988B2May 20, 2008
Liner running system and method
SMITH INTERNATIONAL16 citations83
US7753139B2Jul 13, 2010
Cutting device with multiple cutting structures
SMITH INTERNATIONAL6 citations74
US7225889B2Jun 5, 2007
Downhole motor locking assembly and method
SMITH INTERNATIONAL7 citations74
US6499538B2Dec 31, 2002
Method and apparatus for forming an optimized window
SMITH INTERNATIONAL10 citations74
DEWEY CHARLES H
5 patentsUS8459357B2Jun 11, 2013
Milling system and method of milling
DEWEY CHARLES H7 citations83
US8186458B2May 29, 2012
Expandable window milling bit and methods of milling a window in casing
DEWEY CHARLES H9 citations83
US8122977B2Feb 28, 2012
Cutting device with multiple cutting structures
DEWEY CHARLES H12 citations83
US8967300B2Mar 3, 2015
Pressure activated flow switch for a downhole tool
DEWEY CHARLES H7 citations78
US8881845B2Nov 11, 2014
Expandable window milling bit and methods of milling a window in casing
DEWEY CHARLES H4 citations72
HALLIBURTON CO
3 patentsUS5332048AJul 26, 1994
Method and apparatus for automatic closed loop drilling system
HALLIBURTON CO376 citations99
US5318137AJun 7, 1994
Method and apparatus for adjusting the position of stabilizer blades
HALLIBURTON CO166 citations99
US5318138AJun 7, 1994
Adjustable stabilizer
HALLIBURTON CO210 citations99
GREGUREK PHILIP M
2 patentsWELLBORE INTEGRITY SOLUTIONS LLC
2 patentsUNDERWOOD LANCE D
1 patentERVIN DAVID L
1 patentSWADI SHANTANU N
1 patentShowing the top 50 of 63 patents by PatentIndex Score.