| 10704336 |
Earth boring tools having fixed blades, rotatable cutting structures, and stabilizing structures and related methods |
Robert Bradshaw, Roger Lee, Saleh Al Esry |
2020-07-07 |
| 9540884 |
Drill bit with continuously sharp edge cutting elements |
Robert M. Welch, L. Allen Sinor |
2017-01-10 |
| 9085939 |
Earth-boring tools attachable to a casing string and methods for their manufacture |
Matthew R. Isbell, Jack T. Oldham, John C. Thomas, Marc W. Bird |
2015-07-21 |
| 8720609 |
Drill bit with continuously sharp edge cutting elements |
Robert M. Welch, L. Allen Sinor |
2014-05-13 |
| 8297380 |
Casing and liner drilling shoes having integrated operational components, and related methods |
Jack T. Oldham, L. Allen Sinor, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more |
2012-10-30 |
| 8225887 |
Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods |
Jack T. Oldham, L. Allen Sinor, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more |
2012-07-24 |
| 8225888 |
Casing shoes having drillable and non-drillable cutting elements in different regions and related methods |
Jack T. Oldham, L. Allen Sinor, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more |
2012-07-24 |
| 8205693 |
Casing and liner drilling shoes having selected profile geometries, and related methods |
Jack T. Oldham, L. Allen Sinor, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more |
2012-06-26 |
| 8191654 |
Methods of drilling using differing types of cutting elements |
John C. Thomas, Sarvesh Tyagi, Jack T. Oldham, Lester I. Clark, William Heuser |
2012-06-05 |
| 8177001 |
Earth-boring tools including abrasive cutting structures and related methods |
Michael L. Doster, John C. Thomas, Matthew R. Isbell, Jarod DeGeorge, Chad T. Jurica |
2012-05-15 |
| 8167059 |
Casing and liner drilling shoes having spiral blade configurations, and related methods |
Jack T. Oldham, L. Allen Sinor, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more |
2012-05-01 |
| 8146683 |
Drilling out casing bits with other casing bits |
John C. Thomas |
2012-04-03 |
| 8020641 |
Drill bit with continuously sharp edge cutting elements |
Robert M. Welch, L. Allen Sinor |
2011-09-20 |
| 8006785 |
Casing and liner drilling bits and reamers |
Jack T. Oldham, L. Allen Sinor, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more |
2011-08-30 |
| 7954570 |
Cutting elements configured for casing component drillout and earth boring drill bits including same |
John C. Thomas, Sarvesh Tyagi, Jack T. Oldham, Lester I. Clark, William Heuser |
2011-06-07 |
| 7954571 |
Cutting structures for casing component drillout and earth-boring drill bits including same |
Michael L. Doster, John C. Thomas, Matthew R. Isbell, Jarod DeGeorge, Chad T. Jurica |
2011-06-07 |
| 7900703 |
Method of drilling out a reaming tool |
Lester I. Clark, John C. Thomas, Jeffrey B. Lund |
2011-03-08 |
| 7861809 |
Rotary drag bit with multiple backup cutters |
David Gavia, Ryan J. Hanford, Lane E. Snell, Jason E. Hoines, Matthew R. Isbell +1 more |
2011-01-04 |
| 7810588 |
Multi-layer encapsulation of diamond grit for use in earth-boring bits |
Dan E. Scott, Wesley Dean Fuller, Robert M. Welch, Jimmy W. Eason, Marcus Skeem +1 more |
2010-10-12 |
| 7762355 |
Rotary drag bit and methods therefor |
David Gavia, Lane E. Snell, Jason E. Hoines, Matthew R. Isbell, Michael L. Doster |
2010-07-27 |
| 7748475 |
Earth boring drill bits with casing component drill out capability and methods of use |
Jack T. Oldham |
2010-07-06 |
| 7730976 |
Impregnated rotary drag bit and related methods |
Marcus Skeem |
2010-06-08 |
| 7624818 |
Earth boring drill bits with casing component drill out capability and methods of use |
Jack T. Oldham |
2009-12-01 |
| 7621351 |
Reaming tool suitable for running on casing or liner |
Lester I. Clark, John C. Thomas, Jeffrey B. Lund |
2009-11-24 |
| 7395882 |
Casing and liner drilling bits |
Jack T. Oldham, L. Allen Sinor, Robert A. Laing, Evan C. Turner, Mark W. Dykstra +1 more |
2008-07-08 |