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Matches 1 - 50 out of 8,837

Document Document Title
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 ...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
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...  
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,...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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 ...  
WO/2018/118043A1
Provided are fixed-cutter matrix bits comprising hardfaced elements on the gauge pads. Also provided are methods of manufacture and using. An example fixed- cutter matrix bit comprises a matrix bit body, a plurality of cutter elements se...  
WO/2018/107304A1
The invention relates to a pressurised fluid flow system for a reverse circulation down-the-hole hammer which comprises a coaxial jacket arranged between an outer casing and a piston which reciprocates due to changes in the pressure of t...  
WO/2018/107305A1
The invention relates to a pressurised fluid flow system for a down-the-hole hammer, comprising principal and auxiliary chambers that exert work on a piston. The auxiliary chambers are formed around respective recesses in the piston and ...  
WO/2018/108656A1
The invention relates to a drill head (2) for a drill (1), which drill head has a top face (9) for removing mineral material, a bottom face (10) for fastening to a shaft (3) of the drill (1), and an axis of rotation (6), which extends ce...  
WO/2018/106577A1
Methods of drilling earth formations may involve removing a portion of an underlying earth formation utilizing cutting elements of an earth-boring drill bit. A rotational speed of the drill string may be sensed utilizing a first sensor. ...  
WO/2018/106248A1
A system that includes a drillstring with a bottomhole assembly (BHA). The system also includes at least one stabilizer or reamer integrated with the BHA, wherein each of the at least one stabilizer or reamer includes a position adjustme...  
WO/2018/106218A1
The present disclosure provides a method of forming an inner barrel assembly by installing a fluid collection liner including a pre-formed porous material that is able to retain a reservoir fluid in an inner barrel to form an inner barre...  
WO/2018/102707A1
Downhole assemblies comprise at least one sensor configured to sense at least one sense a parameter relating to a downhole condition. The downhole assembly further includes a communications assembly having at least one device for control...  
WO/2018/099959A1
A multi-indenter drill bit comprising a plurality of indenters arranged on a drilling surface of a bit face, the ratio of the total indenter area to the bit face area being defined by a parameter KPI 1 (expressed as a percentage); the ra...  
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...  
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 ...  
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.  
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 ...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  

Matches 1 - 50 out of 8,837