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WO/2018/094450A1 |
A core sampling system comprises at least one hollow drill rod, each drill rod arranged to be connected endwise to an adjacent drill rod so as to define a string of drill rods that define an internal drill rod space for receiving core ma...
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WO/2018/095441A1 |
A single cone bit having a rotating tooth comprising a drill body (1), and a cone (2) transmittingly connected to the drill body (1); cutting teeth are provided on the cone (2), and at least one of the cutting teeth on the cone (2) is a ...
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WO/2018/090098A1 |
A method of application of hard facing to wear parts, the method including the steps of providing at least one anchor portion on a wear part and attaching hard facing to the wear part using at least the at least one anchor portion.
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WO/2018/093326A1 |
Drill bit insert with a sintered cemented carbide body including a hard phase of tungsten carbide (WC) and a binder phase wherein the cemented carbide comprises 5.0 –7.0 wt % Co, 0.10–0.35 wt % Cr, and a Cr/Co weight ratio of 0.015 â...
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WO/2018/087173A1 |
The invention concerns a rock-cutting tool and the method for manufacturing this tool that comprises cutters (3) comprising a layer (5) of synthetic polycrystalline diamond (PCD), a diamond impregnation layer (6) with diamond particles a...
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WO/2018/088770A1 |
The present invention relates to an excavation bit capable of facilitating the installation of a steel pipe, and to an excavation steel pipe. The excavation bit comprises: a bit body formed elongated in the longitudinal direction so as t...
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WO/2018/085575A1 |
A bottom hole assembly (BHA) contains a motor and a section mill for milling in an uphole direction after blade extension with circulating fluid through the BHA. Below the section mill is sensing equipment to detect location of a bridge ...
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WO/2018/084839A1 |
The present disclosure provides a sintering assembly and a polycrystalline diamond compact (PDC) including a acid-labile leach-enhancing material, a PDC including cavities formed by removal of an acid-labile leach-enhancing material, and...
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WO/2018/078792A1 |
[Problem] To provide an expansion bit configured so as to reduce the energy loss of the expansion bit and to prevent a reduction in boring efficiency by preventing the dislodgement of an expansion bit teeth. [Solution] A plurality of con...
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WO/2018/080490A1 |
The present disclosure provides a polycrystalline diamond compact (PDC) including a substrate and a polycrystalline diamond table including a sintering aid compound, a dissociated non-sintering aid component, a derivative compound, or a ...
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WO/2018/076095A1 |
An encased soil auger apparatus is provided. The encased soil auger apparatus comprises an auger casing forming a hollow cylindrical body. A wall of the auger casing has a plurality of openings having a predetermined size for enabling pa...
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WO/2018/068818A1 |
The invention relates to a drilling crown (11) for the drilling, more particularly the rotary-percussive drilling, of a hole, more particularly of a tap hole of a melting furnace. The drilling crown (11) has a drilling head (10) comprisi...
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WO/2018/067505A1 |
Polycrystalline diamond cutters have a substrate (110), a diamond body (120) including a planar oriented portion (240) and a projecting portion (250), and a passage (130) extending through the cutter along an axis (140) from an opening i...
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WO/2018/067142A1 |
A rolling element assembly includes a rolling element rotatable about a rotational axis when positioned within a cavity defined on a bit body of a drill bit, and a compliant retainer positioned within a retainer slot defined in the bit b...
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WO/2018/055728A1 |
An excavation tool according to the present invention comprises an attachment member provided with: a tool main body which is provided with an attachment hole section and to which a striking force is applied in the axial direction front ...
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WO/2018/057942A1 |
A cutting element comprises a supporting substrate exhibiting a three-dimensional, laterally elongate shape, and a cutting table of a poly crystalline hard material attached to the supporting substrate and comprising a non-planar cutting...
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WO/2018/055549A1 |
A shaft enlargement arrangement for a boring system is provided, the shaft enlargement arrangement comprising a hollow column proximate a lower end of the boring system. A reamer section comprising a downwardly tapering first cutter head...
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WO/2018/052118A1 |
Provided is a core drill capable of reducing powder dust that scatters outward during drilling work, even on a drilling spot having, at a location immediately near thereto, a wall or the like vertical to the surface to be drilled. An exe...
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WO/2018/050796A1 |
A method for manufacturing an impregnated segment includes forming a base tier by depositing one or more layers of molten metallic material. The base tier has a plurality of cavities. The method further includes inserting at least one su...
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WO/2018/050267A1 |
The invention relates to a drill head (1) of a hard material for a drilling tool (2), wherein the drill head (1) has at least one suction opening (4) at a working end (3), via which suction opening drill cuttings can be suctioned, and th...
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WO/2018/047962A1 |
Provided is a drilling tool, wherein a bit head (3) that can rotate about a bit center line (L) separated from an axis (O) on the outer circumference side is mounted to the distal end of a shank device (1) that is rotated about the axis ...
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WO/2018/045187A1 |
A rotary coring bit for use in rotary sidewall coring in a wellbore, the coring bit comprising: a rotary coring bit body forming a core chamber within; and a core catching torsion spring disposed within the core chamber, the core catchin...
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WO/2018/036567A1 |
A self-adaptive differential pressure-type drill bit, which is a pulse jet-type central differential pressure drill bit, comprising a reaming drill bit (2), a pressure adjustment component (3), a transmission mechanism (4), a pilot drill...
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WO/2018/035981A1 |
A polygonal composite sheet matrix comprising a diamond comprises a hard alloy (1). A top surface of the hard alloy (1) is provided with multiple annular polygonal protrusions. A groove is arranged between every two annular polygonal pro...
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WO/2018/034657A1 |
A modular reaming device incorporable into a tubular string. The modular reamer can include a tubular body having a first end and a second end and an internal bore, the internal bore extending longitudinally through the tubular body from...
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WO/2018/035221A1 |
Methods of and systems for performing a reaming operation at a wellsite are disclosed. The method and system involve measuring surface drilling parameters (e.g., surface torque and surface weight on bit) from surface sensors positioned a...
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WO/2018/029130A1 |
A bit for drilling a wellbore includes: a shank (3) having a coupling formed at an upper end thereof; a bit body (2) mounted to a lower end of the shank; a gage section (5) forming an outer portion of the drill bit; and a cutting face (4...
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WO/2018/030464A1 |
This excavating tool has: a casing pipe (1) centered around an axial line (O); a ring bit (2) rotatably engaged with and attached to the tip portion of the casing pipe; and a pilot bit (3) inserted into the inner circumferential portion ...
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WO/2018/026356A1 |
Structural metal-matrix composites (MMC) comprising a foam matrix material infiltrated with a binder material, where the binder material binds the foam matrix material to a structural element of a tool, thereby enhancing three- dimension...
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WO/2018/026981A1 |
Connections between drill pipe sections and drill bits used for boring into the earth may comprise two elements threadably attachable one to another. A first element may comprise a rotor rotatable with respect to a stator. A second eleme...
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WO/2018/017127A1 |
A drill bit includes a bit body including one or more blades extending therefrom and a plurality of cutters secured to the one or more blades. A rolling element assembly is positioned within a cavity defined on the bit body and includes ...
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WO/2018/017103A1 |
Downhole core sampling apparatus including first and second sealing elements and at least one pump configured to pump wellbore fluid from the annular space defined by the sealing elements. The downhole core sampling apparatus is capable ...
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WO/2018/013126A1 |
A system and method to minimize trips in a wellbore during coiled tubing operations by simultaneously deploying on coiled tubing as part of the bottom hole assembly a wireline tool and an intervention tool. The wireline tool includes a f...
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WO/2018/008645A1 |
A boring device for forming an increased-diameter section at the bottom of a mounting hole comprises: a shaft provided with a contact surface which is provided at the front end thereof and which comes into contact with the bottom of the ...
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WO/2018/009438A1 |
A method of forming a cutting element comprises disposing diamond particles in a container and disposing a metal powder on a side of the diamond particles. The diamond particles and the metal powder are sintered so as to form a polycryst...
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WO/2018/000781A1 |
Disclosed is an impregnated diamond drill bit having a double cutting structure. The impregnated diamond drill bit comprises an API connector (12), a drill body (11) connected to the API connector (12). A central channel (2), a plurality...
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WO/2017/223259A1 |
A roller reamer for downhole operations in boreholes, such as are drilled for oil and/or natural gas production, or as injection wells. An elongated main body has preferably three circumferentially spaced pockets. A roller assembly is pr...
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WO/2017/219097A1 |
A method and apparatus for obtaining a sample of soil using a sample collection means (31) which is placed flat on a selected ground area, the collection means (31) having an opening (33) to receive an upright tubular body (12) which is ...
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WO/2017/218975A1 |
A drill bit includes a bit body having one or more blades extending therefrom, a plurality of cutters secured to the one or more blades, and a rolling element assembly positioned within a cavity defined on the bit body. The rolling eleme...
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WO/2017/216540A1 |
The invention relates to a reaming component (10; 110) for self-drilling hollow bars, used in ground engineering applications. The reaming component (10; 110) has a hollow tubular sleeve (1; 101 ) with a longitudinal axis, a number of ex...
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WO/2017/218000A1 |
A drill bit includes a bit body having one or more blades extending therefrom, a plurality of cutters secured to the one or more blades, and a rolling element assembly positioned within a cavity defined on the bit body. The rolling eleme...
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WO/2017/213620A1 |
In some aspects, the present disclosure includes systems and methods for rotatably coupling a bottom-hole assembly to a drilling shaft for use in subterranean drilling operations. In one embodiment, the methods of the present disclosure ...
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WO/2017/205777A1 |
A cutting device for engaging a rock face includes a disc body supported for rotation about an axis of rotation, and a plurality of peripheral portions removably secured to the disc body. Each of the peripheral portions including a plura...
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WO/2017/205507A1 |
Earth-boring rotary drill bits include heel portions exhibiting reduced aggressiveness. Earth-boring rotary drill bits may comprise a bit body and a plurality of roller cones coupled to the bit body. Each roller cone comprises a pluralit...
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WO/2017/205672A1 |
A method of modifying surfaces of diamond particles comprises forming spinodal alloy coatings over discrete diamond particles, thermally treating the spinodal alloy coatings to form modified coatings each independently exhibiting a react...
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WO/2017/200552A1 |
A seal assembly includes a seal groove defined at least partially between a first member and a second member rotatable relative to the first member, an annular sealing element positioned in the seal groove and providing a mud surface, a ...
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WO/2017/200886A1 |
A piloted rock drill bit includes an integral body having a pilot drill section, a reaming section and a mounting base section extending along a longitudinal axis. The reaming section includes four wings extending from the longitudinal a...
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WO/2017/201020A1 |
Herein are provided tools and processes for extracting oil from subterranean formation. The processes can include lightening the oil in the formation prior to extraction by the addition of a nanogas solution. The tools include injectors ...
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WO/2017/192539A1 |
Improved drilling systems and methods may include piezoelectric actuator(s) in a drill string at one or more locations to minimize or eliminate stick-slip while drilling. For example, piezoelectric actuators may be incorporated into the ...
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WO/2017/183659A1 |
This excavation chip has a chip body provided with a distal-end part which tapers off progressively toward the distal-end side thereof, a hard layer is formed on the surface of the distal-end part of the chip body, an outermost layer of ...
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