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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
301	APPARATUS AND METHODS FOR REAL TIME COMMUNICATION BETWEEN DRILL BIT AND DRILLING ASSEMBLY	EP11815413.7	2011-08-08	EP2601378A1	2013-06-12	TRINH, Tu Tien; SULLIVAN, Eric
An apparatus and method of performing a wellbore operation. The apparatus includes a drill bit that has a cavity at an end thereof and a communication device placed in the cavity. The communication device includes a first section and a second section. An outer dimension of the second section is greater than an outer dimension of the first section. The second section includes a conduit configured to allow passage of a conductor from the drill bit to a location outside the drill bit so as to provide a direct connection of the conductor from the drill bit to an element outside the drill bit.
302	SPIRAL STEEL, APPLICATION PRODUCT OF SAME, AND METHOD FOR MANUFACTURING SPIRAL STEEL	EP11812430.4	2011-07-25	EP2599564A1	2013-06-05	Goto, Tsuneo
Abstract: A purpose of the invention is to provide a spiral piece of steel having high mechanical strength and being capable of easily making smaller the pitch intervals of twisted portions (spiral blade portions) even without changing the twist angle, and also to provide an application product thereof and a method for manufacturing the spiral piece of steel.
303	COMPENSATION GROOVES TO ABSORB DILATATION DURING INFILTRATION OF A MATRIX DRILL BIT	EP10830893.3	2010-11-16	EP2501504A1	2012-09-26	GALLEGO, Gilles; SALLIOU, Anthony; BUTEAUD, Scott; REESE, Michael, R.
A down hole tool casting assembly, a gauge ring, and a method for preparing the gauge ring for use within the assembly. The gauge ring includes a bit diameter mold and one or more junk slot displacements extending inwardly from the interior surface of the bit diameter mold. The junk slot displacement includes a first end, a second end, and a junk slot displacement face extending from the first end to the second end. At least one groove is formed within the interior surface of the gauge ring, which alleviates stresses formed within the casting during the casting process. According to some embodiments, at least one groove is formed within the junk slot displacement face. According to some embodiments, at least one groove is formed within the interior surface of the bit diameter mold. Optionally, a pressure absorbing material is inserted into one or more grooves.
304	CASTING METHOD FOR MATRIX DRILL BITS AND REAMERS	EP10823870.0	2010-10-08	EP2488317A1	2012-08-22	REESE, Michael, R.; GALLEGO, Gilles; BUTEAUD, Scott; HARRELL, Alan, K.; DREWS, Steven, W.
An apparatus and method for manufacturing a down hole tool that reduces manufacturing costs and enhances the tool's performance. A belted mold assembly includes a casting assembly, a belt assembly, and a mid-belt. The belted mold assembly is used to fabricate a casting that allows for a larger diameter blank to be used which displaces the more expensive casting material and for using a smaller outer diameter thin-walled mold. The casting assembly is disposed within the belt assembly and the mid-belt is loaded in the volume created between the casting assembly's outer surface and the belt assembly's inner surface. The mid-belt provides a bracing for the casting assembly during the casting process.
305	HYBRID DRILL BIT	EP10775268.5	2010-05-04	EP2430278A2	2012-03-21	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.
306	METHODS, SYSTEMS, AND DEVICES FOR MANIPULATING CUTTING ELEMENTS FOR EARTH BORING DRILL BITS AND TOOLS	EP10741596.0	2010-02-08	EP2396495A2	2011-12-21	LUCE, David, Keith; WIRTH, Sean, W.; MASSEY, Alan, J.; PARROTT, Crystal, A.
Methods include one or more of robotically positioning a cutting element on an earth-boring tool, using a power-driven device to move a cutting element on an earth-boring tool, and robotically applying a bonding material for attaching a cutting element to an earth-boring tool. Robotic systems are used to robotically position a cutting element on an earth-boring tool. Systems for orienting a cutting element relative to a tool body include a power-driven device for moving a cutting element on or adjacent the tool body. Systems for positioning and orienting a cutting element on an earth-boring tool include such a power-driven device and a robot for carrying a cutting element. Systems for attaching a cutting element to an earth-boring tool include a robot carrying a torch for heating at least one of a cutting element, a tool body, and a bonding material.
307	EARTH-BORING ROTARY DRILL BITS INCLUDING BIT BODIES HAVING BORON CARBIDE PARTICLES IN ALUMINUM OR ALUMINUM-BASED ALLOY MATRIX MATERIALS, AND METHODS FOR FORMING SUCH BITS	EP07839095.2	2007-09-28	EP2079898B1	2011-11-02	CHOE, Heman; STEVENS, John H.; WESTHOFF, James C.; EASON, Jimmy W.; OVERSTREET, James L.
Rotary drill bits (10) for drilling subterranean formations include a bit body (12) and at least one cutting structure (34) disposed on a face (18) thereof. The bit body includes a crown region (14) comprising a particle-matrix composite material (52) that includes a plurality of boron carbide particles (50) dispersed throughout an aluminum or aluminum-based alloy matrix material. In some embodiments, the matrix material may include a continuous solid solution phase and a discontinuous precipitate phase. Methods of manufacturing rotary drill bits for drilling subterranean formations include infiltrating a plurality of boron carbide particles with a molten aluminum or aluminum-based material. In additional methods, a green powder component is provided that includes a plurality of particles each comprising boron carbide and a plurality of particles each comprising aluminum or an aluminum-based alloy material. The green powder component is at least partially sintered to provide a bit body, and a shank is attached to the bit body.
308	METHODS AND APPARATUS FOR MECHANICAL AND THERMAL DRILLING	EP09736532.4	2009-10-08	EP2347085A2	2011-07-27	WIDEMAN, Thomas, W.; POTTER, Jared, M.; DREESEN, Donald; POTTER, Robert, M.; UNZELMAN-LANGSDORF, Jason
Methods and apparatus for excavation of a borehole in a geological formation are provided. Such methods may include providing a thermal system (54) capable of providing substantially hot fluid, and comprising at least one jet nozzle, providing a mechanical drilling (55) system comprising a drill bit, directing the substantially hot fluid through the jet nozzle (49) towards the geological formation causing an altered portion of geological formation to form, and removing the altered portion using the drill bit, thereby creating cuttings and producing a borehole in the geological formation.
309	BIT BASED FORMATION EVALUATION USING A GAMMA RAY SENSOR	EP09821088.3	2009-10-13	EP2340449A2	2011-07-06	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.
310	MODULAR FIXED CUTTER EARTH-BORING BITS AND MODULAR FIXED CUTTER EARTH-BORING BIT BODIES	EP07761022.8	2007-04-20	EP2024599B1	2011-06-08	MIRCHANDANI, Prakash, K.; WALLER, Michale, E.; WEIGOLD, Jeffrey, L.; MOSCO, Alfred, J.
A modular fixed cutter earth-boring bit body includes a blade support piece and at least one blade piece fastened to the blade support piece. A modular fixed cutter earth-boring bit and methods of making modular fixed cutter earth-boring bit bodies and bits also are disclosed.
311	METHODS OF FORMING EARTH-BORING TOOLS USING GEOMETRIC COMPENSATION AND TOOLS FORMED BY SUCH METHODS	EP09759316.4	2009-06-03	EP2313595A2	2011-04-27	SMITH, Redd, H.; STEVENS, John, H.; DUGGAN, James; LYONS, Nicholas, J.; EASON, Jimmy, W.; MATTHEWS, Oliver; CURRY, David, A.
Geometric compensation techniques are used to improve the accuracy by which features may be located on drill bits formed using particle compaction and sintering processes. In some embodiments, a positional error to be exhibited by at least one feature in a less than fully sintered bit body upon fully sintering the bit body is predicted and the at least one feature is formed on the less than fully sintered bit body at a location at least partially determined by the predicted positional error. In other embodiments, bit bodies of earth-boring rotary drill bits are designed to include a design drilling profile and a less than fully sintered bit body is formed including a drilling profile having a shape differing from a shape of the design drilling profile. Less than fully sintered bit bodies of earth-boring rotary drill bits are formed using such methods.
312	Methods and systems for design and/or selecting of drilling equipment based on wellbore drilling simulations	EP10164057.1	2006-08-08	EP2264275A2	2010-12-22	Chen, Shilin
Methods and systems may be provided for simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material.
313	Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk	EP10163457.4	2010-05-20	EP2258918A2	2010-12-08	Chen, Shilin
Methods and systems are disclosed which provide simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material. Values of steer force, bit walk rate and average walk rate from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.
314	METHODS AND SYSTEMS TO PREDICT ROTARY DRILL BIT WALK AND TO DESIGN ROTARY DRILL BITS AND OTHER DOWNHOLE TOOLS	EP08861432.6	2008-12-12	EP2240881A1	2010-10-20	CHEN, Shilin
Methods and systems may be provided to simulate forming a wide variety of directional wellbores including wellbores with variable tilt rates, relatively constant tilt rates, wellbores with uniform generally circular cross-sections and wellbores with non-circular cross-sections. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials, relatively hard stringers disposed throughout one or more layers of formation material, and/or concretions (very hard stones) disposed in one or more layers of formation material. Values of bit walk rate from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.
315	METHOD AND APPARATUS AND PROGRAM STORAGE DEVICE ADAPTED FOR AUTOMATIC DRILL BIT SELECTION BASED ON EARTH PROPERTIES	EP05725869.1	2005-03-17	EP1769135B1	2010-06-30	CHEN, Patrick; GIVENS, Kris; VEENINGEN, Daan

316	METHODS AND SYSTEMS FOR DESIGNING AND/OR SELECTING DRILLING EQUIPMENT USING PREDICTIONS OF ROTARY DRILL BIT WALK	EP08745968.1	2008-04-16	EP2149104A1	2010-02-03	CHEN, Shilin
Methods and systems may be provided simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material. Values of bit walk rate from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.
317	DISCRETE ELEMENT MODELING OF ROCK DESTRUCTION UNDER HIGH PRESSURE CONDITIONS	EP07862347.7	2007-11-29	EP2089605A2	2009-08-19	LEDGERWOOD, Leroy W.
Discrete Element Modeling (DEM) of rock subject to high confining pressures, such as in a subterranean drilling environment, may be used to predict performance of cutting structures used in drill bits and other drilling tools, as well as of the tools themselves. DEM may also be used to create 'virtual' rock exhibiting specific drillability characteristics with or without specific reference to any actual rock, for purposes of assessing cutting efficiency of various cutting structure configurations and orientations, as well as of drilling tools incorporating same.
318	EARTH-BORING ROTARY DRILL BITS INCLUDING BIT BODIES COMPRISING REINFORCED TITANIUM OR TITANIUM-BASED ALLOY MATRIX MATERIALS, AND METHODS FOR FORMING SUCH BITS	EP07861703.2	2007-11-05	EP2089604A1	2009-08-19	CHOE, Heman; STEVENS, John H.; OVERSTREET, James L.; WESTHOFF, James C.; EASON, Jimmy W.
Earth-boring rotary drill bits include bit bodies comprising a composite material including a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based, alloy matrix material. The bits further include a cutting structure disposed on a face of ' the bit body. Methods for forming such drill bits include at least partially sintering a plurality of hard particles and a plurality of particles comprising titanium or a titanium-based alloy material to form a bit body comprising a particle-matrix composite material. A.shank may be attached directly to the bit body.
319	EARTH-BORING ROTARY DRILL BITS INCLUDING BIT BODIES HAVING BORON CARBIDE PARTICLES IN ALUMINUM OR ALUMINUM-BASED ALLOY MATRIX MATERIALS, AND METHODS FOR FORMING SUCH BITS	EP07839095.2	2007-09-28	EP2079898A1	2009-07-22	CHOE, Heman; STEVENS, John H.; WESTHOFF, James C.; EASON, Jimmy W.; OVERSTREET, James L.
Rotary drill bits (10) for drilling subterranean formations include a bit body (12) and at least one cutting structure (34) disposed on a face (18) thereof. The bit body includes a crown region (14) comprising a particle-matrix composite material (52) that includes a plurality of boron carbide particles (50) dispersed throughout an aluminum or aluminum-based alloy matrix material. In some embodiments, the matrix material may include a continuous solid solution phase and a discontinuous precipitate phase. Methods of manufacturing rotary drill bits for drilling subterranean formations include infiltrating a plurality of boron carbide particles with a molten aluminum or aluminum-based material. In additional methods, a green powder component is provided that includes a plurality of particles each comprising boron carbide and a plurality of particles each comprising aluminum or an aluminum-based alloy material. The green powder component is at least partially sintered to provide a bit body, and a shank is attached to the bit body.
320	EARTH-BORING ROTARY DRILL BITS AND METHODS OF FORMING EARTH-BORING ROTARY DRILL BITS	EP06844309.2	2006-11-10	EP1960630A1	2008-08-27	OXFORD, James, A.; EASON, Jimmy, W.; SMITH, Redd, H.; STEVENS, John, H.; LYONS, Nicholas, J.
Methods of forming earth-boring rotary drill bits (50) include providing a bit body (52), providing a shank(70) that is configured for attachment to a drill string, and attaching the shank to the bit body. Providing a bit body includes providing a green powder component having a first region (54) having a first composition and a second region (56) having a second, different composition, and at least partially sintering the green powder component. Other methods include providing a powder mixture, pressing the powder mixture to form a green component, and sintering the green component to a final density. A shank(70) is provided that includes an aperture (72), and a feature(60) is machined in a surface of the bit body. The aperture is aligned with the feature, and a retaining member (80) is inserted through the aperture. An earth-boring bit includes a bit body comprising a particle-matrix composite material including a plurality of hard particles dispersed throughout a matrix material. A shank is attached to the bit body using a retaining member.

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