Matches 1 - 50 out of 81 1 2 >


Match Document Document Title
US20100300761 APPARATUS AND METHODS TO OPTIMIZE FLUID FLOW AND PERFORMANCE OF DOWNHOLE DRILLING EQUIPMENT  
Sleeves, stabilizers and other well tools may be formed with fluid flow paths or channels extending through one or more blades disposed on the exterior portions of such well tools. The blades and...
US20070193784 Rock drilling head  
A rock drilling head (1) with a drilling diameter (D) between 25 mm and 60 mm and formed of no more than five separate parts, has at least one rinsing channel (2) formed in the outer surface (3)...
US20130248257 Drilling Fluid Composition  
The invention pertains to a drilling fluid composition comprising:—at least one (per)fluoropolyether oil comprising recurring units of formula —CF(CF3)CF2O— said oil having a kinematic viscosity...
US20090320584 ROTARY DRILL BITS AND SYSTEMS FOR INSPECTING ROTARY DRILL BITS  
A method for conducting nondestructive internal inspection of a rotary drill bit used for drilling subterranean formations comprises communicating ultrasonic waves into a drill bit and detecting...
US20090020334 NOZZLES INCLUDING SECONDARY PASSAGES, DRILL ASSEMBLIES INCLUDING SAME AND ASSOCIATED METHODS  
Nozzles for a drilling tools, such as rotary-type drag bits and roller cone bits, a drilling tool and drilling assembly comprising nozzles, and methods of conveying drilling fluid through a nozzle...
US20120285293 COMPOSITE SINTERED POWDER METAL ARTICLES  
A composite sintered powder metal article including a first region including a cemented hard particle material such as, for example, cemented carbide. The article includes a second region...
US20120298425 Heavy Duty Matrix Bit  
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...
US20090090561 Nozzle Having A Spray Pattern For Use With An Earth Boring Drill Bit  
An earth boring drill bit having a cleaning nozzle for cleaning cutting elements on the face of the drill bit. A notch is included on the nozzle face for directing an elongated and coherent fluid...
US20140131115 Method For Reducing Intermetallic Compounds In Matrix Bit Bondline  
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...
US20090084607 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...
US20070251732 Modular Fixed Cutter Earth-Boring Bits, Modular Fixed Cutter Earth-Boring Bit Bodies, and Related Methods  
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...
US20050274545 Pressure Relief nozzle  
A pressure relief nozzle installs on the face of a drill bit, and provides a flow path for drilling fluid. The pressure relief nozzle has a larger internal flow area when flow rates through the...
US20060266557 Directable nozzle for rock drilling bits  
A directable nozzle assembly 100 for a rotary drill bit 10 is disclosed, having a nozzle 110 comprising a generally spherical body 112, and having an extension 114 extending from the body 112. A...
US20100018771 Rotary Drill Bit  
A rotary drill bit (10) is provided for drilling a hole in a subsurface formation. The bit body (12) includes a plurality of axially extending ribs (16a, b, c and d) and a flow channel between...
US20130032398 Pulsed-Electric Drilling Systems and Methods with Reverse Circulation  
In at least some embodiments, a pulsed-electric drilling system includes a bit that extends a borehole by detaching formation material with pulses of electric current, and a drillstring that...
US20060076163 Flow allocation in drill bits  
A method for designing a drill bit comprising modeling a domain between a drill bit and a surrounding wellbore. A region is defined within each of a plurality of flow paths through which fluid...
US20090065263 DRAG BIT WITH UTILITY BLADES  
A drill bit comprises a bit body and a plurality of cutting blades extending radially from the bit body, the plurality of cutting blades further comprising cutting elements disposed thereon. The...
US20070163811 Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency  
A rotary drill bit having one or more fluid nozzles is provided. Each nozzle may include interior surfaces designed to optimize hydraulic performance and efficiency of fluid flowing through the...
US20080202818 Rotary Roller Reamer  
A bore hole rotary reamer (1) includes a body (2) having cutters (4) contained in respective recesses (3) formed in the body (2). Each cutter (4) is rotatably mounted by one or more respective...
US20090283333 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...
US20150176336 DOWNHOLE ORBITAL TOOL  
This disclosure is related to a downhole tool having an inlet and an outlet. The downhole tool also incorporates a passageway disposed therein having an upper portion and a lower portion. The...
US20150184465 No-Waterway Or Single Waterway Drill Bits And Systems And Methods For Using Same  
A drill bit for forming a hole in a formation. The drill bit has a shank and an annular crown that cooperate to define an interior space that receives water or other drilling fluid. The annular...
US20100084195 DISTANCE HOLDER WITH JET DEFLECTOR  
A distance holder for connection to, and rotation with, a drill string in an earth formation drilling device arranged to supply a jet of abrasive fluid for the purpose of providing a borehole by...
US20110031026 EARTH-BORING TOOLS AND COMPONENTS THEREOF INCLUDING EROSION RESISTANT EXTENSIONS, AND METHODS OF FORMING SUCH TOOLS AND COMPONENTS  
Earth-boring drill bits include a bit body, an erosion-resistant extension, and a shank. The erosion-resistant extension includes a generally tubular body, and an erosion-resistant material lining...
US20100200302 DIGGING TOOL, DIGGING BIT, AND DEVICE  
Provided is an excavation tool for efficiently taking waste rocks produced during excavation into the inner peripheral side of a casing pipe and discharging the waste rocks to the outside. An...
US20120138298 METHODS AND APPARATUS FOR WELLBORE CONSTRUCTION AND COMPLETION  
The present invention relates methods and apparatus for lining a wellbore. In one aspect, a drilling assembly having an earth removal member and a wellbore lining conduit is manipulated to advance...
US20070187149 DRILL BIT  
A drill bit is made from a shank, lid and blades. Junk slots with higher resistance to flow are provided to force drilling fluid between cutters on adjacent blades to improve cleaning. Blades are...
US20150167397 EARTH-BORING TOOLS AND COMPONENTS THEREOF INCLUDING METHODS OF ATTACHING A NOZZLE TO A BODY OF AN EARTH-BORING TOOL AND TOOLS AND COMPONENTS FORMED BY SUCH METHODS  
Earth-boring drill bits include a bit body, an element having an attachment feature bonded to the bit body, and a shank assembly. Methods for assembling an earth-boring rotary drill bit include...
US20140090900 BLADE FLOW PDC BITS  
An apparatus that includes one or more flow channels and method for fabricating such flow channels. The apparatus includes a body and one or more blades extending from one end of the body. Each...
US20130075166 ROTATIONAL DRILL BITS AND DRILLING APPARATUSES INCLUDING THE SAME  
A roof-bolt drill bit. The roof-bolt drill bit may include a bit body rotatable about a central axis and a cutting element coupled to the bit body. The bit body may comprise a forward end, a...
US20090065262 DRILL BIT  
A drill bit 10 comprising a main body 22 having an axis about which it is rotated in use; a cutting face 12, connecting means 16 for, in use, attaching the bit to a source of rotary motion; a...
US20130168154 SONDE HOUSING AND BIT BODY ARRANGEMENT FOR HORIZONTAL DIRECTIONAL DRILLING  
A horizontal directional drilling sonde housing has a cavity for receiving a sonde. Signal channels extend from the cavity to an exterior of the housing. A polymer lines at least part of the...
US20100193253 EARTH-BORING TOOLS AND BODIES OF SUCH TOOLS INCLUDING NOZZLE RECESSES, AND METHODS OF FORMING SAME  
Earth-boring tools such as, for example, earth-boring rotary drill bits include erosion-resistant structures disposed proximate areas of intersection between faces of the tools and fluid nozzle...
US20130228382 INNER GAUGE RING DRILL BIT  
A drill bit comprises a plurality of annular blades coupled to a bit body. A plurality of gauge pads is coupled to the bit body and defines an outer cutting diameter. A circumferentially...
US20120285749 DRILL BIT AND PRODUCTION METHOD  
A drill bit 1 has a drill head 3 and a shank 4. The shank 4 has a body 20, an add-on part 40 and an internal channel 50. The drill head 3 is attached to the body 20. The add-on part 40 is attached...
US20150047905 DRILLING SYSTEMS AND MULTI-FACED DRILL BIT ASSEMBLIES  
A drill bit assembly that includes a shank including a shank axis, first and second ends, a drill bit seat at the second end and a central flow bore extending axially from the first end....
US20130153304 FLOATING PLUG PRESSURE EQUALIZATION IN OILFIELD DRILL BITS  
A drill bit of the type used to drill a wellbore in the earth can comprise a bore formed in the drill bit, and a plug sealingly and reciprocably disposed in the bore, whereby the plug prevents...
US20100193254 Matrix Drill Bit with Dual Surface Compositions and Methods of Manufacture  
Matrix drill bits and other downhole tools may be formed with one or more layers of hard materials disposed on exterior portions thereof. Exterior portions of used rotary drill bits or other...
US20100101867 SELF-STABILIZED AND ANTI-WHIRL DRILL BITS AND BOTTOM-HOLE ASSEMBLIES AND SYSTEMS FOR USING THE SAME  
A wellsite system includes a drill string suspended within a borehole, and a bottom hole assembly with a drill bit at its lower end, where the drill bit is a self stabilized and anti-whirl drill...
US20110061941 EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH  
Embodiments of the present invention generally relate to an earth removal member with features for facilitating drill-through. In one embodiment, an earth removal member for drilling a wellbore...
US20100270086 EARTH-BORING TOOLS AND COMPONENTS THEREOF INCLUDING METHODS OF ATTACHING AT LEAST ONE OF A SHANK AND A NOZZLE TO A BODY OF AN EARTH-BORING TOOL AND TOOLS AND COMPONENTS FORMED BY SUCH METHODS  
Earth-boring drill bits include a bit body, an element having an attachment feature bonded to the bit body, and a shank assembly. Methods for assembling an earth-boring rotary drill bit include...
US20130327575 EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH  
An earth removal member for drilling a wellbore with casing or liner includes a tubular body and a head. The head is fastened to or formed with an end of the body, has a face and a side, is made...
US20120103694 EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH  
An earth removal member for drilling a wellbore with casing or liner includes a tubular body and a head. The head is fastened to or formed with an end of the body, has a face and a side, is made...
US20110000716 DRILL BIT WITH A FLOW INTERRUPTER  
A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a...
US20100206637 Cutting Unit for a Tunneling Apparatus  
The present disclosure relates to a cutting component for a tunneling apparatus. The cutting component includes a cutting unit main body having a front cutting side and a rear side. The cutting...
US20140020957 PDC Drill Bit With Flute Design For Better Bit Cleaning  
A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending from the center towards the gage of the bit which has...
US20110127087 PDC DRILL BIT WITH FLUTE DESIGN FOR BETTER BIT CLEANING  
A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending from the center towards the gage of the bit which has...
US20100147596 Drillable Bit Nozzle Retainer with Interchangeable Nozzle Capability  
A drillable bit nozzle assembly can be used on a casing drilling bit and features a support housing preferably of the same material as the bit crown. The housing is preferably attached by welding...
US20130133956 REVERSE CIRCULATION BIT ASSEMBLY  
A drill bit assembly for boring including a drill bit and a bit sub. A front bit end has a plurality cutting elements at a forward face of the front bit end and a first fluid return passage...
US20100314175 ROTARY DRILL BIT WITH NOZZLES DESIGNED TO ENHANCE HYDRAULIC PERFORMANCE AND DRILLING FLUID EFFICIENCY  
A rotary drill bit having one or more fluid nozzles is provided. Each nozzle may include interior surfaces designed to optimize hydraulic performance and efficiency of fluid flowing through the...

Matches 1 - 50 out of 81 1 2 >