| Patent application number | Description | Published |
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| 20090084607 | DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING - A drill bit includes at least one extension pad extending rotationally forward or backward of an associated blade in a gage region of the bit body. The extension pad includes a circumferential bearing surface that extends the circumferential bearing surface of the associated blade and reduces the chordal drop between any blade having an extension pad associated therewith and a circumferentially adjacent blade toward which the extension pad protrudes. A drill bit that reduces a chordal drop segment extending across a junk slot is also disclosed. | 04-02-2009 |
| 20110155472 | EARTH-BORING TOOLS HAVING DIFFERING CUTTING ELEMENTS ON A BLADE AND RELATED METHODS - Earth-boring tools include combinations of shearing cutting elements and gouging cutting elements on a blade of the earth-boring tools. In some embodiments, a gouging cutting element may be disposed adjacent to a shearing cutting element on a blade of an earth-boring tool. Methods of forming earth-boring tools include providing such combination of at least one shearing cutting element and at least one gouging cutting element on a blade of an earth-boring tool. | 06-30-2011 |
| 20110192651 | SHAPED CUTTING ELEMENTS ON DRILL BITS AND OTHER EARTH-BORING TOOLS, AND METHODS OF FORMING SAME - Earth-boring tools include a body, one or more blades projecting outwardly from the body, and cutting elements carried by the blade. The cutting elements include at least one shearing cutting element and at least one gouging cutting element. Methods of forming an earth-boring tool include mounting a shearing cutting element comprising an at least substantially planar cutting face to a body of an earth-boring tool, and mounting a gouging cutting element comprising a non-planar cutting face to the body of the earth-boring tool. The gouging cutting element may be positioned on the body of the earth-boring tool such that the gouging cutting element will gouge formation material within a kerf cut in the formation material by the shearing cutting element, or between kerfs cut in the formation material by a plurality of shearing cutting elements. | 08-11-2011 |
| 20110253452 | CORING APPARATUS AND METHODS - A coring apparatus is provided, which apparatus, in one exemplary embodiment, includes a rotatable member coupled to a drill bit configured to drill a core from a formation, a substantially non-rotatable member in the rotatable member configured to receive the core from the formation, and a sensor configured to provide signals relating to rotation between the rotatable member and the substantially non-rotatable member during drilling of the core from the formation, and a circuit configured to process the signals from the sensor to estimate rotation between the rotatable member and the non-rotatable member. | 10-20-2011 |
| 20110266070 | CUTTING ELEMENTS, EARTH-BORING TOOLS, AND METHODS OF FORMING SUCH CUTTING ELEMENTS AND TOOLS - Cutting elements include a volume of superabrasive material. The volume of superabrasive material comprises a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. An earth-boring tool may comprise a bit body and at least one cutting element attached to the bit body. Methods of forming cutting elements comprise forming a volume of superabrasive material comprising forming a front-cutting surface, an end-cutting surface, a cutting edge, and lateral side surfaces extending between and intersecting each of the front-cutting surface and the end-cutting surface. Methods of forming earth-boring tools comprise forming a cutting element and attaching the cutting element to an earth-boring tool. | 11-03-2011 |
| 20120279785 | EARTH-BORING TOOLS AND METHODS OF FORMING SUCH EARTH-BORING TOOLS - Earth-boring drill bits comprise a bit body having a plurality of radially extending blades and a plurality of cutting elements attached to the plurality of radially extending blades. Only gouging cutting elements are attached to at least one blade of the plurality of radially extending blades. Only shearing cutting elements are attached to at least another blade of the plurality of radially extending blades. Only shearing cutting elements are attached to a number of blades of the plurality of radially extending blades that is different from a number of blades of the plurality of radially extending blades to which only gouging cutting elements are attached. Methods of forming an earth-boring drill bit comprise forming a bit body including a plurality of radially extending blades. Only shearing cutting elements are attached to a number of blades different from a number of blades to which only gouging cutting elements are attached. | 11-08-2012 |
| 20130140096 | CUTTING STRUCTURES, EARTH-BORING TOOLS INCLUDING SUCH CUTTING STRUCTURES, AND RELATED METHODS - Earth-boring tools comprise a body comprising at least one pocket extending into the body. A first discrete cutting element segment is secured within the at least one pocket. At least another discrete cutting element segment is secured within the at least one pocket. Methods of forming a cutting structure secured to an earth-boring tool comprise disposing at least one discrete cutting element or at least one cutting element segment within a pocket or recess formed in a blade extending longitudinally and radially over a face of a body. At least one discrete wearable element or at least another discrete cutting element segment is disposed within the pocket or recess. The at least one discrete cutting element or at least one discrete cutting element segment and the at least one discrete wearable element or at least another discrete cutting element segment are secured to the blade within the pocket or recess. | 06-06-2013 |
| 20130199856 | SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS - Cutting elements for an earth-boring tool include a substrate base and a cutting tip. The cutting tip may include a first generally conical surface, a second, opposite generally conical surface, a first flank surface extending between the first and second generally conical surfaces, and a second, opposite flank surface. In some embodiments, the cutting tip includes a central axis that is not co-linear with a longitudinal axis of the substrate base. In some embodiments, the cutting tip includes a surface defining a longitudinal end thereof that is relatively more narrow in a central region thereof than in a radially outer region thereof. Earth boring tools include a body and a plurality of such cutting elements attached thereto, at least one cutting element oriented to initially engage a formation with the first or second generally conical surface thereof. Methods of drilling a formation use such cutting elements and earth-boring tools. | 08-08-2013 |
| 20130292188 | EARTH-BORING TOOLS HAVING CUTTING ELEMENTS WITH CUTTING FACES EXHIBITING MULTIPLE COEFFICIENTS OF FRICTION, AND RELATED METHODS - An earth-boring tool having at least one cutting element with a multi-friction cutting face provides for the steering of formation cuttings as the cuttings slide across the cutting face. The multi-friction cutting element includes a diamond table bonded to a substrate of superabrasive material. The diamond table has a cutting face formed thereon with a cutting edge extending along a periphery of the cutting face. The cutting face has a first area having an average surface finish roughness less than an average surface finish roughness of a second area of the cutting face, the two areas separated by a boundary having a proximal end proximate the tool crown and a distal end remote from the tool crown. | 11-07-2013 |
| 20140116788 | CUTTING ELEMENTS HAVING CURVED OR ANNULAR CONFIGURATIONS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS - Cutting elements for earth-boring tools include a substrate having a front end surface, an opposing back end surface, and at least one side surface extending between the front end surface and the back end surface. A volume of polycrystalline hard material is disposed on the front end surface of the substrate. The substrate and hard material may have a curved or an annular configuration defining an aperture within the cutting element. Earth boring tools include such cutting elements. Methods of forming earth-boring tools include attaching such one or more such cutting elements to a body of an earth-boring tool. | 05-01-2014 |
| 20140262511 | Drill Bit with Extension Elements in Hydraulic Communications to Adjust Loads Thereon - In one aspect, a drill bit is disclosed that in one embodiment includes a plurality of elements that extend and retract from a surface of the drill bit, wherein the plurality of such elements are in fluid communication with each other to compensate for differing forces applied to such elements during drilling operations. In another aspect, a method of drilling a wellbore is provided that in one embodiment includes: conveying a drill string having a drill bit at an end thereof, wherein the drill bit includes a plurality of elements that extend and retract from a surface of the drill bit, wherein the plurality of such elements are in fluid communication with each other to compensate for differing forces applied to such elements during drilling operations; and drilling the wellbore using the drill string. | 09-18-2014 |
| 20140311801 | Drill Bit with Self-Adjusting Pads - In one aspect, a drill bit is disclosed that in one embodiment includes a bit body and a pad that extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | 10-23-2014 |
| 20140332271 | EARTH-BORING TOOLS INCLUDING MOVABLE FORMATION-ENGAGING STRUCTURES AND RELATED METHODS - Earth-boring tools may have a body, a cutting element attached to the body at a first location, and a formation-engaging structure attached to the body at a second location. The formation-engaging structure may be movable during a drilling operation between a first position and a second position. In the first position, the formation-engaging structure may be located rotationally behind the cutting element at a first radial distance from a longitudinal axis of the body at which the cutting element will at least initially shield the formation-engaging structure from engaging a formation. In the second position, the formation-engaging structure may be located at a different second radial distance from the longitudinal axis of the body at which the formation-engaging structure will engage a formation. | 11-13-2014 |
| 20140332283 | EARTH-BORING TOOLS INCLUDING MOVABLE CUTTING ELEMENTS AND RELATED METHODS - Earth-boring tools may have a body, a cutting element attached to the body at a first location, and a formation-engaging structure attached to the body at a second location. The formation-engaging structure may be movable during a drilling operation between a first position and a second position. In the first position, the formation-engaging structure may be located rotationally behind the cutting element at a first radial distance from a longitudinal axis of the body at which the cutting element will at least initially shield the formation-engaging structure from engaging a formation. In the second position, the formation-engaging structure may be located at a different second radial distance from the longitudinal axis of the body at which the formation-engaging structure will engage a formation. | 11-13-2014 |
| 20150034394 | EARTH-BORING TOOLS AND METHODS OF FORMING SUCH EARTH-BORING TOOLS - Earth-boring drill bits may include a bit body including blades extending radially over a face of the earth-boring drill bit and cutting elements attached to each blade. Only cutting elements including planar cutting faces may be attached to at least one of the blades. Only cutting elements including nonplanar cutting faces may be attached to at least another of the blades. Only cutting elements including planar cutting faces or only cutting elements including nonplanar cutting faces may be attached to each of the blades. Only cutting elements including nonplanar cutting faces may be attached to a number of the blades that may be unequal to a number of the blades to which only cutting elements comprising planar cutting faces may be attached. | 02-05-2015 |
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| 20100081624 | SELECTIVE PEPTIDES THAT INHIBIT THE BIOLOGICAL ACTIVITY OF CALCINEURIN - The invention relates to the biotechnology sector involving the area of human health. More specifically, the invention is based on the surprising usefulness of peptides LxVPc1, c3 and c4 as efficient selective inhibitors of the calcineurin signalling pathway (CN)-NFAT and the phosphate activity of CN. Said compounds are useful immunosuppressors and serve as a base for the preparation of therapeutic compositions for the prophylactics and treatment of human diseases associated with T-lymphocyte activation, including, but not limited to, autoimmune diseases, inflammation and allergy or transplant rejections. In addition, said peptides and the associated biological and genetic material can form useful tools for the development of tests that can be used to find compounds that have a selective antagonist activity in relation to CN. | 04-01-2010 |
| 20120076809 | METHOD TO INHIBIT THE BIOLOGICAL ACTIVITY OF CALCINEURIN WITH SELECTIVE PEPTIDES - The invention relates to the biotechnology sector involving the area of human health. More specifically, the invention is based on the surprising usefulness of peptides LxVPc1, c3 and c4 as efficient selective inhibitors of the calcineurin signalling pathway (CN)-NFAT and the phosphate activity of CN. Said compounds are useful immunosuppressors and serve as a base for the preparation of therapeutic compositions for the prophylactics and treatment of human diseases associated with T-lymphocyte activation, including, but not limited to, autoimmune diseases, inflammation and allergy or transplant rejections. In addition, said peptides and the associated biological and genetic material can form useful tools for the development of tests that can be used to find compounds that have a selective antagonist activity in relation to CN. | 03-29-2012 |
| 20140296482 | METHOD TO SCREEN FOR SELECTIVE PEPTIDES THAT INHIBIT THE BIOLOGICAL ACTIVITY OF CALCINEURIN - The invention relates to the biotechnology sector involving the area of human health. More specifically, the invention is based on the surprising usefulness of peptides LxVPc1, c3 and c4 as efficient selective inhibitors of the calcineurin signalling pathway (CN)-NFAT and the phosphate activity of CN. Said compounds are useful immunosuppressors and serve as a base for the preparation of therapeutic compositions for the prophylactics and treatment of human diseases associated with T-lymphocyte activation, including, but not limited to, autoimmune diseases, inflammation and allergy or transplant rejections. In addition, said peptides and the associated biological and genetic material can form useful tools for the development of tests that can be used to find compounds that have a selective antagonist activity in relation to CN. | 10-02-2014 |
