Gerard Peter Dolan

US Patent:

20110174549, Jul 21, 2011

Filed:

Jan 18, 2011

Appl. No.:

13/008240

Inventors:

Gerard Dolan - The Woodlands TX, US
Konstantin Evgenievich Morozov - The Woodlands TX, US
John Hewitt Liversage - Gauteng, ZA
Iain Patrick Goudemond - Gauteng, ZA

International Classification:

E21B 10/36

US Classification:

175428

Abstract:

A superhard insert for a rotary earth borer tool comprises a cutter end having a peripheral cutter edge, at least part of the peripheral cutter edge being defined by a plurality of edges of a plurality of alternate hard and superhard regions. The edges of the superhard regions are arranged spaced apart from each other and are separated by edges of hard regions. The hardness of each hard region is at most 50% of the hardness of each superhard region.

US Patent:

20130068538, Mar 21, 2013

Filed:

May 22, 2012

Appl. No.:

13/477905

Inventors:

Anthony A. DiGiovanni - Houston TX, US
Yavuz Kadioglu - Houston TX, US
Danny E. Scott - Montgomery TX, US
Matthew J. Meiners - Conroe TX, US
Rudolf Carl Pessier - Houston TX, US
Nicholas J. Lyons - Houston TX, US
Clement D. van der Riet - Spring TX, US
Donald Royceton Herschell - Springs, ZA
Cornelis Roelof Jonker - Springs, ZA
Roger William Nigel Nilen - Springs, ZA
Gerard Peter Dolan - Spring TX, US

Assignee:

ELEMENT SIX LIMITED - County Claire
BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 10/573

US Classification:

175432

Abstract:

Cutting elements for earth-boring tools include one or more recesses and/or one or more protrusions in a cutting face of a volume of superabrasive material. The superabrasive material may be disposed on a substrate. The cutting face may be non-planar. The recesses and/or protrusions may include one or more linear segments. The recesses and/or protrusions may comprise discrete features that are laterally isolated from one another. The recesses and/or protrusions may have a helical configuration. The volume of superabrasive material may comprise a plurality of thin layers, at least two of which may differ in at least one characteristic. Methods of forming cutting elements include the formation of such recesses and/or protrusions in and/or on a cutting face of a volume of superabrasive material. Earth-boring tools include such cutting elements, and methods of forming earth-boring tools include attaching such a cutting element to a tool body.

US Patent:

20110114393, May 19, 2011

Filed:

Nov 16, 2010

Appl. No.:

12/947030

Inventors:

Gerard Dolan - Spring TX, US
John Hewitt Liversage - Springs, ZA
Habib Saridikmen - Springs, ZA
Richard Bodkin - Springs, ZA
Mehmet Serdar Ozbayraktar - Springs, ZA

International Classification:

E21B 10/36

US Classification:

175428

Abstract:

A cutter insert assembly for a drill bit for boring into the earth, comprising a super-hard structure clampable to a support body by means of a clamp mechanism; the clamp mechanism comprising opposed or opposable compression members connected or connectable by a tension member capable of sustaining a clamping force between the compression members when the cutter insert assembly is in a clamped condition, in which condition the compression members exert opposing compressive forces on the super-hard structure and the support body, operable to clamp the super-hard structure to the support body, and in which condition the cutter insert assembly is self-supporting and capable of being mounted onto a drill bit body.