Inventor
SINOR L ALLEN
US22 patents
⚠️ This page may combine multiple inventors who share the name “SINOR L ALLEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
11 patentsUS7395882B2Jul 8, 2008
Casing and liner drilling bits
BAKER HUGHES INC154 citations99
US6298930B1Oct 9, 2001
Drill bits with controlled cutter loading and depth of cut
BAKER HUGHES INC200 citations99
US6302223B1Oct 16, 2001
Rotary drag bit with enhanced hydraulic and stabilization characteristics
BAKER HUGHES INC65 citations96
US8006785B2Aug 30, 2011
Casing and liner drilling bits and reamers
BAKER HUGHES INC24 citations92
US7455125B2Nov 25, 2008
Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design and operation thereof
BAKER HUGHES INC29 citations92
US6397958B1Jun 4, 2002
Reaming apparatus and method with ability to drill out cement and float equipment in casing
BAKER HUGHES INC51 citations89
US8020641B2Sep 20, 2011
Drill bit with continuously sharp edge cutting elements
BAKER HUGHES INC8 citations83
US9068407B2Jun 30, 2015
Drilling assemblies including expandable reamers and expandable stabilizers, and related methods
BAKER HUGHES INC8 citations82
US7703558B2Apr 27, 2010
Drilling tool for reducing cutter damage when drilling through formation changes, and methods of design and operation thereof
BAKER HUGHES INC5 citations63
US10309157B2Jun 4, 2019
Cutting element incorporating a cutting body and sleeve and an earth-boring tool including the cutting element
BAKER HUGHES INC0 citations51
US9816324B2Nov 14, 2017
Cutting element incorporating a cutting body and sleeve and method of forming thereof
BAKER HUGHES INC0 citations51
OLDHAM JACK T
5 patentsUS8167059B2May 1, 2012
Casing and liner drilling shoes having spiral blade configurations, and related methods
OLDHAM JACK T8 citations83
US8225888B2Jul 24, 2012
Casing shoes having drillable and non-drillable cutting elements in different regions and related methods
OLDHAM JACK T3 citations73
US8225887B2Jul 24, 2012
Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods
OLDHAM JACK T4 citations73
US8205693B2Jun 26, 2012
Casing and liner drilling shoes having selected profile geometries, and related methods
OLDHAM JACK T4 citations73
US8297380B2Oct 30, 2012
Casing and liner drilling shoes having integrated operational components, and related methods
OLDHAM JACK T1 citations62