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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
281	MANUFACTURE OF LOW COST BITS BY INFILTRATION OF METAL POWDERS	EP15155368.2	2015-02-17	EP2913474A3	2015-12-23	Amundsen, Marvin Windsor; Bellin, Federico; Thigpen, Gary M; Johnson, Charles Daniel
An apparatus and method for manufacturing a downhole tool. The cemented matrix material is formed from a metal powder, a shoulder powder, and a binder material, wherein the metal powder and/or the shoulder powder includes at least one of stainless steel powder, nickel powder, cobalt powder, iron powder, or powders of other suitable metals or alloys, or a combination of such mentioned powders.
282	SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS	EP13746230	2013-02-08	EP2812523A4	2015-11-25	BILEN JUAN MIGUEL; SCOTT DANNY E; PATEL SURECH G; MATTHEWS OLIVER; NELMS DEREK L; LYONS NICHOLAS J
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. The cutting tip may include a central axis that is not co-linear with a longitudinal axis of the substrate base. The cutting tip may include 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.
283	CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING SUCH CUTTING ELEMENTS FOR EARTH-BORING TOOLS	EP12803470	2012-06-20	EP2723965A4	2015-11-18	SCOTT DANNY E; MARVEL TIMOTHY K; KADIOGLU YAVUZ; WELLS MICHAEL R
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.
284	LOW FRICTION COATINGS WITH IMPROVED ABRASION AND WEAR PROPERTIES AND METHODS OF MAKING	EP13798877.0	2013-11-19	EP2938754A1	2015-11-04	RAJAGOPALAN, Srinivasan; HAQUE, Tabassumul; ERTAS, Mehmet, Deniz; OZEKCIN, Adnan; JIN, Hyunwoo; ZHAO, Bo
Provided are low friction coatings with improved abrasion, wear resistance and methods of making such coatings. In one form, the coating includes: i) an under layer selected from the group consisting of CrN, TiN, TiAlN, TiAlVN, TiAlVCN, TiSiN, TiSiCN, TiAlSiN and combinations thereof, wherein the under layer ranges in thickness from 0.1 to 100 μm, ii) an adhesion promoting layer selected from the group consisting of Cr, Ti, Si, W, CrC, TiC, SiC, WC, and combinations thereof, wherein the adhesion promoting layer ranges in thickness from 0.1 to 50 μm and is contiguous with a surface of the under layer, and iii) a functional layer selected from the group consisting of a fullerene based composite, a diamond based material, diamond-like-carbon and combinations thereof, wherein the functional layer ranges from 0.1 to 50 μm and is contiguous with a surface of the adhesion promoting layer.
285	METHODS OF MAKING A DRILLING TOOL WITH LOW FRICTION COATINGS TO REDUCE BALLING AND FRICTION	EP13826685.3	2013-12-20	EP2935652A1	2015-10-28	BAILEY, Jeffrey, R.; RAJAGOPALAN, Srinivasan; HAQUE, Tabassumul; OZEKCIN, Adnan; ERTAS, Mehmet, Deniz; JIN, Hyunwoo; ZHAO, Bo; MUELLER, Russell, R.
Provided are methods to make a drilling tool with low friction coatings to reduce balling and friction, In one form, the method includes providing one or more drilling tool components with specified locations for fitting cutters, inserts, bearings, rollers, additional non-coated components, or combinations thereof; cleaning the one or more drilling tool components; applying masking for fitting cutters, inserts, bearings, rollers, additional non-coated components or combinations thereof; applying a multi-layer low friction coating to the cleaned specified locations; removing the masking from the cleaned and coated specified locations of the one or more drilling components; inserting cutters and inserts and assembling moving parts to the cleaned and coated specified locations of the one or more drilling tool components; and assembling the one or more drilling tool components to form a drilling tool.
286	BIT BASED FORMATION EVALUATION USING A GAMMA RAY SENSOR	EP09821088	2009-10-13	EP2340449A4	2015-10-21	TRINH TU TIEN; SULLIVAN ERIC; CURRY DAVID
A drill bit made according to one embodiment includes at least a gamma ray sensor configured to provide signals representative of a presence and/or amount of a naturally occurring gamma ray source when the drill bit is used for cutting into a formation. A circuit may be configured to process signals from the gamma ray sensor to provide an estimate a parameter relating to the naturally occurring gamma ray source, which may used for purposes such as optimizing drilling parameters and geosteering.
287	MANUFACTURE OF LOW COST BITS BY INFILTRATION OF METAL POWDERS	EP15155368.2	2015-02-17	EP2913474A2	2015-09-02	Amundsen, Marvin Windsor; Bellin, Federico; Thigpen, Gary M; Johnson, Charles Daniel
An apparatus and method for manufacturing a downhole tool. The cemented matrix material is formed from a metal powder, a shoulder powder, and a binder material, wherein the metal powder and/or the shoulder powder includes at least one of stainless steel powder, nickel powder, cobalt powder, iron powder, or powders of other suitable metals or alloys, or a combination of such mentioned powders.
288	Improvements in heat flow control for molding downhole equipment	EP15155032.4	2011-11-25	EP2910322A1	2015-08-26	Atkins, William Brian; Weaver, Gary Eugene; Sillen, Valérie
There is disclosed herein a method of molding an object including heating and/or cooling a body of material in a mold assembly, the method including controlling the heating and/or cooling of the body of material by selectively supplying heat from a heat source disposed within the mold assembly.
289	METHODS AND SYSTEMS FOR DESIGNING AND/OR SELECTING DRILLING EQUIPMENT USING PREDICTIONS OF ROTARY DRILL BIT WALK	EP08745968	2008-04-16	EP2149104A4	2015-08-12	CHEN SHILIN

290	Method for reducing intermetallic compounds in matrix bit bondline	EP15152253.9	2015-01-23	EP2899360A2	2015-07-29	THIGPEN, Gary M.; BELLIN, Federico; AMUNDSEN, Marvin Windsor; THER, Olivier; DOURFAYE, Alfazazi; CUILLIER DE MAINDREVILLE, Bruno; GOMEZ, Williams
An apparatus and method for manufacturing a downhole tool that reduces failures occurring along a bondline between a cemented matrix coupled around a blank. The cemented matrix material is formed from a tungsten carbide powder, a shoulder powder, and a binder material, wherein at least one of the tungsten carbide powder or the shoulder powder is absent of any free tungsten. The blank, which optionally may be coated, is substantially cylindrically shaped and defines a channel extending from a top portion and through a bottom portion of the blank. The absence of free tungsten from at least one of the tungsten carbide powder or the shoulder powder reduces the reaction with iron from the blank, thereby allowing the control and reduction of intermetallic compounds thickness within the bondline.
291	HYBRID DRILL BIT	EP10775268	2010-05-04	EP2430278A4	2015-04-22	ZAHRADNIK ANTON; MCCORMICK RON; PESSIER ROLF; OLDHAM JACK; DAMSCHEN MICHAEL; NGUYEN DON; MEINERS MATTHEW; CEPEDA KARLOS; BLACKMAN MARK
A bit body is configured at its upper extent for connection into a drillstring. At least one fixed blade extends downwardly from the bit body, and has a radially outermost gage surface. A plurality of fixed cutting elements is secured to the fixed blade, preferably in a row at its rotationally leading edge. At least one bit leg is secured to the bit body and a rolling cutter is mounted for rotation on the bit leg. At least one stabilizer pad is disposed between the bit leg and the fixed blade, the stabilizer pad extending radially outward to substantially the gage surface. The radially outermost gage surface of each blade can extend axially downward parallel to the bit axis or angled (non-parallel), spirally or helically, relative to the bit axis.
292	DOWNHOLE CUTTING TOOL AND METHOD	EP12810677	2012-06-29	EP2732122A4	2015-03-18	LYNDE GERALD D

293	COMPENSATION GROOVES TO ABSORB DILATATION DURING INFILTRATION OF A MATRIX DRILL BIT	EP10830893	2010-11-16	EP2501504A4	2015-01-07	GALLEGO GILLES; SALLIOU ANTHONY; BUTEAUD SCOTT; REESE MICHAEL R

294	Improvements in heat flow control for molding downhole equipment	EP13198927.9	2011-11-25	EP2716390A3	2014-07-30	Atkins, William Brian; Weaver, Gary E.; Sillen, Valérie
There is disclosed herein a method of designing a mold assembly including a container and a mold, at least portions of an outer surface of the mold corresponding to an inner surface of the container such that the container will support the mold therein, in use of the mold for molding an object, the mold assembly defining a mold cavity substantially corresponding to the outer shape of the object to be molded, the method including: specifying at least one material from which the mold is to be formed from a plurality of layers by 3D printing; and specifying at least another material to be positioned in at least part of a space inside the container which is defined by the mold and is separate from the mold cavity, the other material having a thermal and/or electrical conductivity different from that of the one material, to adjust the heat flow through the mold at the position adjacent said another material during molding of the object. A related mold assembly; a method of manufacturing a mold assembly; a method of molding an object; and a heating device including a heat source for use in molding an object are also disclosed.
295	CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING SUCH CUTTING ELEMENTS FOR EARTH-BORING TOOLS	EP12803470.9	2012-06-20	EP2723965A2	2014-04-30	SCOTT, Danny, E.; MARVEL, Timothy, K; KADIOGLU, Yavuz; WELLS, Michael, R.
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.
296	IMPROVEMENTS IN HEAT FLOW CONTROL FOR MOLDING DOWNHOLE EQUIPMENT	EP11799646.2	2011-11-25	EP2646185A2	2013-10-09	ATKINS, William Brian; WEAVER, Gary Eugene; SILLEN, Valérie
There is disclosed herein a method of designing a mold, the mold being at least part of a unitary body to be formed from a plurality of layers by 3D printing, the method comprising: defining an inner surface of the mold corresponding to at least part of an outer surface of an object to be molded in the mold; selecting a first material from which at least part of the mold is to be printed; and selecting a second material from which at least another part of the mold is to be printed, the second material having a higher thermal and/or electrical conductivity than the first material, wherein at least one of the layers from which the mold is to be formed by 3D printing includes areas to be printed from each of the first and second materials.
297	FORMING OBJECTS BY INFILTRATING A PRINTED MATRIX	EP11808324.5	2011-11-28	EP2646184A2	2013-10-09	ATKINS, William, Brian; WEAVER, Gary, Eugene
There is disclosed herein a method of molding an object by infiltrating a matrix material with an infiltration material, the method including providing first and second zones of respective different first and second matrix materials arranged substantially adjacent to each other in a mold, including forming a transition region between the two zones through which the composition of the material in the transition region is gradually varied from the composition of the first matrix material adjacent the first zone to the composition of the second matrix material near the second zone.
298	SYSTEM AND METHOD FOR ADJUSTING ROLLER CONE PROFILE ON HYBRID BIT	EP11767520.7	2011-09-22	EP2635763A1	2013-09-11	NGUYEN, Don Q.; ZAHRADNIK, Anton F.; PESSIER, Rudolf C.; BLACKMAN, Mark P.; BRADSHAW, Robert D.; YOUNG, Scott A.; MCCORMICK, Ronny D.; ANANDAMPILLAI, Shyam; DAMSCHEN, Michael S.; BUSKE, Robert J.
An earth boring drill bit (11) designed for a specific performance, within a finished product tolerance, using components built to a looser manufacturing tolerance. The bit may be assembled by selecting a leg (17) from a plurality of pre -manufactured legs; selecting a bit body (13) from a plurality of pre -manufactured bit bodies, the bit body having a slot (123) for receiving the leg; placing the leg within the slot; and fixing the leg within the slot within the finished product tolerance by placing one or more shims (200) between the leg and the slot. The shims may be used to adjust an axial position, a radial position, and/or a circumferential position of the leg with respect to the slot. The leg and the bit body may be selected, or produced, to ensure the bit will not meet the specification, given the manufacturing tolerance, without the shims.
299	POLYCRYSTALLINE COMPACTS INCLUDING NANOPARTICULATE INCLUSIONS, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SAME	EP11836880.2	2011-10-19	EP2632637A1	2013-09-04	DIGIOVANNI, Anthony, A.
A polycrystalline compact comprises a plurality of grains of hard material and a plurality of nanoparticles disposed in interstitial spaces between the plurality of grains of hard material. The plurality of nanoparticles has a thermal conductivity less than a thermal conductivity of the plurality of grains of hard material. An earth-boring tool comprises such a polycrystalline compact. A method of forming a polycrystalline compact comprises combining a plurality of hard particles and a plurality of nanoparticles to form a mixture and sintering the mixture to form a polycrystalline hard material comprising a plurality of interbonded grains of hard material. The plurality of nanoparticles have a lower thermal conductivity than the plurality of hard particles. A method of forming a cutting element comprises infiltrating interstitial spaces between interbonded grains of hard material in a polycrystalline material with a plurality of nanoparticles. The plurality of nanoparticles have a lower thermal conductivity than the interbonded grains of hard material.
300	METHODS OF FORMING EARTH-BORING TOOLS INCLUDING SINTERBONDED COMPONENTS AND TOOLS FORMED BY SUCH METHODS	EP09763485	2009-06-10	EP2304162A4	2013-09-04	SMITH REDD H; LYONS NICHOLAS J
Partially formed earth-boring rotary drill bits comprise a first less than fully sintered particle-matrix component having at least one recess, and at least a second less than fully sintered particle-matrix component disposed at least partially within the at least one recess. Each less than fully sintered particle-matrix component comprises a green or brown structure including compacted hard particles, particles comprising a metal alloy matrix material, and an organic binder material. The at least a second less than fully sintered particle-matrix component is configured to shrink at a slower rate than the first less than fully sintered particle-matrix component due to removal of organic binder material from the less than fully sintered particle-matrix components in a sintering process to be used to sinterbond the first less than fully sintered particle-matrix component to the first less than fully sintered particle-matrix component. Earth-boring rotary drill bits comprise such components sinterbonded together.

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