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WO/2018/226286A1 |
A blend including 50% to 95% reinforcing particles by weight, and 5% to 50% filler particles by weight, of the blend, wherein the reinforcing particles have mean particle size within 70% or less of the mean particle size of the filler pa...
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WO/2018/226319A1 |
A roller-mill bit for use in a wellbore includes: a body having a coupling formed at an upper end thereof and a plurality of lower legs; a plurality of roller disks, each roller disk secured to a bearing shaft of a respective leg for rot...
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WO/2018/226208A1 |
A cutting element for a drill bit can include a first layer of polycrystalline diamond, a second layer of polycrystalline diamond, wherein a boundary between the first layer and the second layer is nonplanar, and a substrate. The first a...
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WO/2018/226380A1 |
Bearing assemblies that include a plurality of polycrystalline diamond ("PCD") bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating and fabricating such bearing assemblies and apparatuses are ...
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WO/2018/222436A1 |
A downhole tool includes a blade coupled to a body. The body and blade rotate about a longitudinal axis. A pre-formed faceplate is connected to the blade and partially defines a cutter pocket therein. Another portion of the cutter pocket...
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WO/2018/218900A1 |
Disclosed is an anchor-bolt hole interior reamer used for mining. Said reamer comprises a reaming cutter, a sleeve (1), a push-pull rod (2), a drilling-rig connecting shaft (3), and a manual hydraulic jack (4); the push-pull rod (2) is c...
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WO/2018/222608A1 |
An earth-boring bit includes a bit body threaded at its upper extent for connection to a drill string and a plurality of blades on the bit body, each blade having a leading edge and a trailing edge. A plurality of cutting elements is arr...
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WO/2018/213941A1 |
A full-casing drilling tool (3), comprising an elevator (1) of which one end is connected to a drilling rig steel wire rope, and the other end is connected to a supporting rod (2). The other end of the supporting rod (2) is fixed to a pr...
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WO/2018/217093A1 |
A device and a method for attaching a drill body (8) to a tubular slot drill (1) which is arranged to drill in the ground (4), the slot drill (1) being provided, at its lower end portion (10), with at least one drill body (8) detachable ...
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WO/2018/213706A1 |
A cutter assembly for a tunnel boring machine includes first and second housing mounts each having a plate portion, an abutment flange, and a plurality of spaced seats. A cutter ring assembly is mountable in the housings and includes two...
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WO/2018/207316A1 |
Provided is a seal structure capable of improving the service life of a seal material. The seal material (10) is disposed in a seal groove (31) formed in a sliding clearance between a shaft (20) and a case (30). The seal material (10) in...
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WO/2018/209229A1 |
A method of forming a supporting substrate for a cutting element comprises forming a precursor composition comprising discrete WC particles, a binding agent, and discrete particles comprising Co, one or more of Al, Be, Ga, Ge, Si, and Sn...
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WO/2018/207314A1 |
Provided is a seal structure capable of improving the service life of a seal material. This seal structure (1) is provided with an annular seal material (10). The seal material (10) is disposed, in a sliding clearance between a shaft (20...
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WO/2018/209221A1 |
A method of forming a supporting substrate for a cutting element comprises forming a precursor composition comprising discrete WC particles, a binding agent, and discrete particles comprising Co, Al, and one or more of C and W. The precu...
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WO/2018/206002A1 |
Disclosed is a pile driver chain-type drill, comprising a chain rack (1a). The chain rack (1a) is provided with at least one chain-type carrier. The chain-type carrier is provided with several cutting teeth (3). An outer end of the cutti...
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WO/2018/204123A1 |
A downhole tool includes at least a pilot section, a first expansion section, and a second expansion section. The pilot section has a plurality of cutting elements to cut a pilot hole. Each of the expansion sections has a plurality of cu...
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WO/2018/204644A1 |
A bit jet enhancement tool is provided, the system comprises two or more separate flow paths, each of the flow paths has multiple hollow chambers connected in series; each of the hollow chambers comprises a first constricted chamber with...
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WO/2018/204458A1 |
Cutting elements for earth-boring tools may include a substrate and a poly crystalline, superabrasive material secured to an end of the substrate. The poly crystalline superabrasive material may include a first transition surface extendi...
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WO/2018/202605A1 |
The present invention relates to a dental drill (10) formed of titanium or a titanium alloy having a hardness greater than pure titanium, said drill extending along a central axis (A) from a proximal end (14) to a distal end (16). The dr...
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WO/2018/203880A1 |
Disclosed herein is a drill bit (10). The drill bit comprises a body (12) that comprises a metal matrix composite 20. The MMC comprises a mixture comprising a plurality of particles (22) and another plurality of particles (24), wherein e...
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WO/2018/200703A1 |
An earth-boring tool includes a body, blades extending longitudinally and generally radially from the body, and cutting elements located on each blade. The earth-boring tool may also include a first group of at least two adjacent blades ...
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WO/2018/197154A1 |
A cutter (127) for a cutting unit (700) used in cutting apparatus (100) suitable for creating tunnels or subterranean roadways. The cutter (127) includes: a disc body (711) having an underside (732), an upper side (730) arranged substant...
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WO/2018/192701A1 |
The invention relates to a drilling device and a method for producing a drill hole in the ground, comprising: an auger (22), which can be rotationally driven and which has at least one drill flighting (24), which runs along a central hol...
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WO/2018/192764A1 |
A cutting head (128) for cutting apparatus (100) for creating tunnels or subterranean roadways having: a rotatable cutting head body (131); a plurality of cutting units (700A,700B) mounted on the cutting head body (131), said cutting uni...
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WO/2018/192765A1 |
Cutting apparatus (100) for creating tunnels or subterranean roadways comprises: a support structure (800) having first and second cutting assemblies (900), with a rotatable cutting head (128) and a mounting assembly (902), which include...
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WO/2018/191320A1 |
Drill bits comprise a body having an uphole end and a downhole end. The uphole end is adapted for connection to a tool assembly for rotating the drill bit. The tool assembly has an axis of rotation. The downhole end has one or more cutti...
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WO/2018/187765A1 |
A pressure pulse tool includes a tool housing, a valve disposed in the housing and having first and second valve components that are each rotatable relative to the housing and that cooperate to open and close a fluid flow path through th...
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WO/2018/169741A1 |
Earth-boring tools may include a body, blades extending outward from the body, and cutting elements secured to the blades. An entirety of a first blade may exhibit a first, constant or continuously variable radius of curvature different ...
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WO/2018/165754A1 |
The diamond drill bit comprises a steel powder comprising iron in a non-zero proportion of up to 99,6 % iron and carbon in a proportion between 0,03% and 2,14%, coated diamonds impregnated in the steel powder, and a metallic infiltrant a...
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WO/2018/166191A1 |
A drilling pre-formed polycrystalline diamond compact with an efficient debris removal function, comprising a polycrystalline diamond layer (100) and a hard alloy matrix support (200) adhered to the polycrystalline diamond layer (100). T...
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WO/2018/162442A1 |
A strike tip for a pick tool is provided. The strike tip comprises a strike structure comprising a super-hard material and a substrate comprising cemented carbide material, the substrate being joined to the strike structure at an interfa...
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WO/2018/157193A1 |
A check valve (18) may be incorporated in an inner core barrel assembly (10). The check valve (18) has a valve body (20) defining a fluid flow path FP and provided with a valve seat (24). A valve member (22) is located in the valve body ...
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WO/2018/158503A1 |
A drill bit (1) is provided, comprising a head portion (2) having a circumference (2a) and a face surface (2b), and a shank portion (3) extending longitudinally from a side of the head portion opposite to the face surface. A central flus...
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WO/2018/158609A2 |
A cutting element comprises a supporting substrate, and a cutting table attached to the supporting substrate and comprising a substantially planar apex, opposing flat surfaces extending upwardly and inwardly toward the substantially plan...
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WO/2018/156346A1 |
Methods for forming fixed-cutter earth-boring drill bits include retrieving a forged steel drill bit body from an inventory of substantially identical forged steel drill bit bodies including fixed blades and junk slots between the fixed ...
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WO/2018/152022A1 |
A drilling tool includes a pilot bit coupled to an eccentric reamer that has a reaming side and a stabilizing side. A fluid passageway extends between the reamer and the pilot bit, and the tool includes at least one upwardly-directed noz...
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WO/2018/152279A1 |
A fastening apparatus includes a retaining member comprising a shape memory material configured to transform, responsive to application of a stimulus, from a first solid phase to a second solid phase. The retaining member is disposed wit...
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WO/2018/151965A1 |
A cutting table comprises a polycrystalline hard material and at least one rhenium- containing structure within the polycrystalline hard material and comprising greater than or equal to about 10 weight percent rhenium. A cutting element,...
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WO/2018/147959A1 |
Embodiments disclosed herein are directed to energy beam ablation machining methods that are used to machine polycrystalline diamond tables (e.g., polycrystalline diamond compacts that each includes polycrystalline diamond tables). Embod...
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WO/2018/146586A1 |
A reaming tool includes a reaming tool body configured to be coupled within a drill string or a string of drilling tools. A plurality of reaming blocks is attached to the reaming tool body at circumferentially spaced apart locations. Eac...
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WO/2018/144762A1 |
An insert for a drill bit includes a base portion having a central axis and a formation engaging portion. The formation engaging portion includes an elongate peaked ridge, a first flanking surface extending from the peaked ridge, and a s...
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WO/2018/139082A1 |
[Problem] To provide a well drilling bit that can drill in high-temperature hard strata efficiently at a low cost with low replacement frequency and a well drilling method using same. [Solution] A well drilling bit 1 for drilling bedrock...
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WO/2018/140281A1 |
An earth-boring tool includes a body having a longitudinal axis. The earth-boring tool also includes blades extending longitudinally and generally radially from the body. The earth-boring tool may also include one or more polished supera...
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WO/2018/136033A1 |
A drill bit for downhole electrocrushing drilling is disclosed. A electrocrushing drill bit may include a bit body; an electrode coupled to a power source and the bit body, the electrode having a distal portion for engaging with a surfac...
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WO/2018/129052A1 |
A drilling bottom hole assembly for loss circulation mitigation includes a drill bit configured to drill a wellbore in a formation. The drill bit is attached to a drill string. The wellbore includes a high-loss circulation zone into whic...
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WO/2018/125613A1 |
Directional drilling is an extremely important area of technology for the extraction of oil and gas from earthen formations. The technology of the present application relates to improved non-stabilizer guidance positioning members for di...
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WO/2018/121815A1 |
The invention relates to a drilling device (1) for hard rock using a fluid, having at least one drill head (2) with a pre-chamber (8) and a mixing chamber (3) where at least one front-facing nozzle (4) and at least one rear-facing nozzle...
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WO/2018/114230A1 |
The invention relates to a rotary drilling tool and to a method for creating a borehole in the ground, comprising a main body, a removal apparatus, which has at least one hammer unit, which comprises an axially reversingly driven hammer ...
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WO/2018/116140A1 |
A drill bit for coupling in use downhole drilling apparatus, the drill bit comprising: an annular coring drill bit that is rotatable to cut a formation bore face to create a core plug, a concentric drill bit that can be repeatedly axiall...
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WO/2018/112540A1 |
A drill bit for use with a drill head coupled to a drill pipe, the drill head having a return passageway extending inside the drill pipe, the drill bit including: an annular body defining a body hole extending through the body, the body ...
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