Patent application number | Description | Published |
20090145666 | EXPANDABLE STABILIZER WITH ROLLER REAMER ELEMENTS - An expandable reamer apparatus for drilling a subterranean formation may include a tubular body, one or more blades, each blade positionally coupled to a sloped track of the tubular body, a push sleeve and a drilling fluid flow path extending through an inner bore of the tubular body for conducting drilling fluid therethrough. Each of the one or more blades may be configured to ream a subterranean formation. The push sleeve may be disposed in the inner bore of the tubular body and coupled to each of the one or more blades so as effect axial movement thereof along the track to an extended position responsive to exposure to a force or pressure of drilling fluid in the flow path of the inner bore. Each blade may include one or more roller elements for reaming a wellbore. | 06-11-2009 |
20100224419 | DRILL BIT WITH INTEGRAL CUTTINGS SPLITTER AND METHOD OF MAKING - Disclosed herein is a downhole drill bit. The drill bit includes, a body, a plurality of cutters attached to the body, and at least one splitter that is integrally formed in the body is in operable communication with at least one of the plurality of cutters such that the splitter bifurcates cuttings cut by the at least one cutter. | 09-09-2010 |
20100270078 | METHOD AND APPARATUS TO THWART BIT BALLING OF DRILL BITS - Disclosed herein is a drill bit. The drill bit includes, a body of the drill bit having at least two blades defining a junk slot therebetween, at least one cutter positioned on at least one of the at least two blades, and at least one diverter positioned downstream of the at least one cutter defined by a direction of travel of the cuttings, the at least one diverter configured to divert cuttings to travel along a trajectory more parallel to a profile of the junk slot. | 10-28-2010 |
20100270087 | DRILL BIT WITH PREFABRICATED CUTTINGS SPLITTER AND METHOD OF MAKING - Disclosed herein is a method of making a drill bit for drilling subterranean formations. The method includes, forming a bit mold having at least one recess receptive of a distal portion of a prefabricated splitter, positioning the distal portion into one of the at least one recess, and filling the bit mold with at least one material. | 10-28-2010 |
20100326729 | CASING BITS, DRILLING ASSEMBLIES, AND METHODS FOR USE IN FORMING WELLBORES WITH EXPANDABLE CASING - Casing bits include an expander for enlarging an inner diameter of expandable casing at least partially disposed within a body of the casing bits. Drilling assemblies include a casing bit attached to an end of expandable casing, and an expander disposed in proximity to the casing bit and a distal end of the expandable casing. Methods of forming casing bits include positioning an expander in proximity to a body of a casing bit. Methods of forming drilling assemblies include positioning an expander in proximity to a body of a casing bit and a distal end of expandable casing, and attaching the casing bit to the end of the expandable casing. Methods of casing a wellbore include one or both of drilling and reaming a wellbore using a casing bit attached to a distal end of expandable casing, and forcing an expander through the expandable casing. | 12-30-2010 |
20110174548 | DOWNHOLE TOOLS HAVING FEATURES FOR REDUCING BALLING, METHODS OF FORMING SUCH TOOLS, AND METHODS OF REPAIRING SUCH TOOLS - Downhole tools are provided with a topographical pattern, and anti-balling material is provided over the topographical pattern. The topographical pattern may be defined by at least one of a plurality of recesses extending into a surface of a body of the tool and a plurality of protrusions protruding from the surface. Downhole tools include an insert disposed within a recess in a body, and the insert comprises an anti-balling material having a composition selected to reduce accumulation of formation cuttings on the tools when the tools are used to form or service a wellbore. Downhole tools include anti-balling material disposed over a porous mass provided over the surfaces of the tools. Methods of forming downhole tools include providing anti-balling material over features on and/or in a surface of a body of a tool. Methods of repairing downhole tools include removing an insert therefrom and disposing a replacement insert therein. | 07-21-2011 |
20110210474 | DRILL BIT WITH INTEGRAL CUTTINGS SPLITTER AND METHOD OF MAKING - A method of making a drill bit for drilling subterranean formations includes, forming a bit mold defining the drill bit to include at least one recess defining at least one splitter, and filling the bit mold with at least one material. | 09-01-2011 |
20110220312 | DRILL BIT WITH PREFABRICATED CUTTINGS SPLITTER AND METHOD OF MAKING - A method of making a drill bit for drilling subterranean formations includes, forming a bit mold having at least one recess receptive of a distal portion of a prefabricated splitter, positioning the distal portion into one of the at least one recess, and filling the bit mold with at least one material. | 09-15-2011 |
20120125695 | EARTH-BORING TOOLS INCLUDING REPLACEABLE CUTTING STRUCTURES AND RELATED METHODS - Earth-boring tools comprise a body and one or more replaceable cutting structures attached to the body at a face region of the body. Each replaceable cutting structure comprises an attachment member and a cutting portion configured to engage an underlying earth formation. Methods of forming an earth-boring tool comprise attaching one or more cutting elements to a replaceable cutting structure; positioning the replaceable cutting structure proximate a region of a body of an earth-boring tool that is susceptible to at least one of localized wear and localized impact damage; and attaching the replaceable cutting structure to the body. Methods of repairing an earth-boring tool comprise bringing a replaceable cutting structure proximate at least one portion of a body of an earth-boring tool exhibiting at least one of localized wear and localized impact damage; and attaching the replaceable cutting structure to the earth-boring tool at the at least one portion. | 05-24-2012 |
20120205162 | DOWNHOLE TOOLS HAVING FEATURES FOR REDUCING BALLING, METHODS OF FORMING SUCH TOOLS, AND METHODS OF REPAIRING SUCH TOOLS - Downhole tools are provided with a topographical pattern, and anti-balling material is provided over the topographical pattern. The topographical pattern may be defined by at least one of a plurality of recesses extending into a surface of a body of the tool and a plurality of protrusions protruding from the surface. Downhole tools include an insert disposed within a recess in a body, and the insert comprises an anti-balling material having a composition selected to reduce accumulation of formation cuttings on the tools when the tools are used to form or service a wellbore. Downhole tools include anti-balling material disposed over a porous mass provided over the surfaces of the tools. Methods of forming downhole tools include providing anti-balling material over features on and/or in a surface of a body of a tool. Methods of repairing downhole tools include removing an insert therefrom and disposing a replacement insert therein. | 08-16-2012 |
20120325563 | CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING SUCH CUTTING ELEMENTS FOR EARTH-BORING TOOLS - Cutting elements for use with earth-boring tools include a cutting table having at least two sections where a boundary between the at least two sections is at least partially defined by a discontinuity formed in the cutting table. Earth-boring tools including a tool body and a plurality of cutting elements carried by the tool body. The cutting elements include a cutting table secured to a substrate. The cutting table includes a plurality of adjacent sections, each having a discrete cutting edge where at least one section is configured to be selectively detached from the substrate in order to substantially expose a cutting edge of an adjacent section. Methods for fabricating cutting elements for use with an earth-boring tool including forming a cutting table comprising a plurality of adjacent sections. | 12-27-2012 |
20140353040 | METHODS OF FABRICATING CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND METHODS OF SELECTIVELY REMOVING A PORTION OF A CUTTING ELEMENT OF AN EARTH-BORING TOOL - Cutting elements for use with earth-boring tools include a cutting table having at least two sections where a boundary between the at least two sections is at least partially defined by a discontinuity formed in the cutting table. Earth-boring tools including a tool body and a plurality of cutting elements carried by the tool body. The cutting elements include a cutting table secured to a substrate. The cutting table includes a plurality of adjacent sections, each having a discrete cutting edge where at least one section is configured to be selectively detached from the substrate in order to substantially expose a cutting edge of an adjacent section. Methods for fabricating cutting elements for use with an earth-boring tool including forming a cutting table comprising a plurality of adjacent sections. | 12-04-2014 |