| Patent application number | Description | Published |
|---|
| 20080282618 | IMPREGNATED MATERIAL WITH VARIABLE EROSION PROPERTIES FOR ROCK DRILLING AND THE METHOD TO MANUFACTURE - A cutting structure that includes a plurality of encapsulated particles dispersed in a first matrix material, the encapsulated particles comprising: an abrasive grit encapsulated within a shell, wherein the shell comprises a second matrix material different from the first matrix material is disclosed. | 11-20-2008 |
| 20080314646 | BARRIER COATED GRANULES FOR IMPROVED HARDFACING MATERIAL USING ATOMIC LAYER DEPOSITION - A hardfacing composition for a drill bit that includes an abrasive phase comprising a plurality of abrasive particles having a barrier coating deposited by atomic layer deposition disposed thereon; and a binder alloy is disclosed. Drill bits having hardfacing compositions that include an abrasive phase comprising a plurality of abrasive particles having a barrier coating deposited by atomic layer deposition disposed thereon; and a binder alloy are also disclosed. | 12-25-2008 |
| 20090120008 | IMPREGNATED DRILL BITS AND METHODS FOR MAKING THE SAME - An impregnated cutting structure that includes a plurality of first encapsulated particles, each first encapsulated particle comprising a first abrasive particle encapsulated by a first matrix material shell; and a plurality of second encapsulated particles, the second encapsulated particles comprising a second abrasive particle encapsulated by a second matrix material shell, wherein the first encapsulated particles and the second encapsulated particles have at least one property difference is disclosed. | 05-14-2009 |
| 20090260893 | MATRIX POWDER FOR MATRIX BODY FIXED CUTTER BITS - A matrix powder for forming a matrix bit body, the matrix powder essentially consisting of a plurality of carbide particles having a particle size distribution of ±20% of a median particle size; and a plurality of metal binder particles is disclosed. | 10-22-2009 |
| 20090283333 | MATRIX BIT BODIES WITH MULTIPLE MATRIX MATERIALS - A drill bit that includes a bit body having a plurality of blades extending radially therefrom, the bit body comprising a first matrix region and a second matrix region, wherein the first matrix region is formed from a moldable matrix material; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades is disclosed. | 11-19-2009 |
| 20090283334 | IMPREGNATED DRILL BIT - A drill bit that includes a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween; at least one of the plurality of ribs having a varying width along at least a portion of a rib height is disclosed. | 11-19-2009 |
| 20090283335 | IMPREGNATED DRILL BITS AND METHODS OF MANUFACTURING THE SAME - A drill bit that includes a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween; at least one of the plurality of ribs having a leading portion and a trailing portion, the leading portion comprising a first matrix material impregnated with super abrasive particles and the trailing portion comprising a second matrix material impregnated with super abrasive particles, wherein the first and second matrix materials differ from each other is disclosed. | 11-19-2009 |
| 20090283336 | DIAMOND IMPREGNATED BITS AND METHOD OF USING AND MANUFACTURING THE SAME - A drill bit that includes a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween; and at least one of the plurality of ribs having a cutting portion of the at least one rib comprising a first diamond impregnated matrix material and at least a portion of a gage surface region thereof comprising a second diamond impregnated matrix material, the gage surface region backed by a third matrix material is disclosed. | 11-19-2009 |
| 20100038145 | HARDFACING COMPOSITIONS FOR EARTH BORING TOOLS - A hardfacing composition essentially consisting of from about 50 to 75 percent by weight of a carbide phase having a particle size distribution of ±20% or less of a median particle size; and from about 25 to 50 percent by weight of binder phase is disclosed. Drill bits having such hardfacing compositions disposed thereon are also disclosed. | 02-18-2010 |
| 20100038147 | TOUGH CARBIDE BODIES USING ENCAPSULATED CARBIDES - A drill bit that includes a bit body having a plurality of blades extending radially therefrom, wherein at least a portion of the bit body comprises a first matrix region comprising a plurality of primary carbide particles having an average mean free path of at least about 10 microns; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades is disclosed. | 02-18-2010 |
| 20100116557 | MATRIX BIT BODIES WITH MULTIPLE MATRIX MATERIALS - A drill bit may include a bit body having a plurality of blades extending radially therefrom, the bit body comprising a first matrix region and a second matrix region, wherein the first matrix region is formed from a moldable matrix material having carbide particles with a unimodal particle size distribution; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. | 05-13-2010 |
| 20100206639 | Infiltrated Carbide Matrix Bodies Using Metallic Flakes - A matrix powder for forming a matrix bit body, wherein the matrix powder includes: a plurality of carbide particles; and a plurality of first metal binder particles having an aspect ratio of at least about 3. Drill bits formed from metal binder particles having an aspect ratio of at least about 3 and methods of forming such bits. | 08-19-2010 |
| 20100206640 | Matrix Body Fixed Cutter Bits - A drill bit that includes a bit body having a plurality of blades extending radially therefrom, at least a portion of the plurality of blades comprises a first matrix region comprising a plurality of first carbide particles separated by a first binder phase, each of the first carbide particles comprising a mixture of WC and W | 08-19-2010 |
| 20100320005 | DRILL BITS AND METHODS OF MANUFACTURING SUCH DRILL BITS - In one aspect, an impregnated drill bit is provided having at least one insert positioned within at least one of the plurality of blades such that the insert spans more than 75% of the height of the blade and at least a portion of the blade has a blade height of at least 40 mm. In another aspect, an impregnated drill bit is provided having a plurality of blades with at least a portion of at least one blade having a blade height of at least 60 mm. Also provided are methods of manufacturing such impregnated drill bits. | 12-23-2010 |
| 20110114394 | MATRIX TOOL BODIES WITH EROSION RESISTANT AND/OR WEAR RESISTANT MATRIX MATERIALS - Methods for manufacturing a matrix tool body comprising placing a first matrix material within a first region of a mold cavity proximate a surface of the mold. A second matrix material may be placed within a second region of the mold cavity positioned inwardly of the first matrix material. The first matrix material and the second matrix material comprise a plurality of hard particles. The plurality of hard particles of the second matrix material have a median particle size that is less than the median particle size of the first matrix material. The plurality of hard particles of the first matrix material and the second matrix material are infiltrated with an infiltration binder to form the tool body. Also included are tool bodies having one or more regions proximate a surface of the tool body comprising an erosion resistant matrix material and/or a wear resistant matrix material. | 05-19-2011 |
| 20110120781 | HIGH STRENGTH INFILTRATED MATRIX BODY USING FINE GRAIN DISPERSIONS - A drill bit may include a bit body having a plurality of blades extending radially therefrom, the bit body comprising a continuous infiltration binder and a plurality of carbide particles dispersed in the continuous infiltration binder, wherein at least a portion of the plurality of carbide particles and at least a portion of the continuous infiltration binder form a first carbide matrix region, wherein the plurality of carbide particles forming the first carbide matrix region have an average grain sizes of less than about 44 microns; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. | 05-26-2011 |
