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公开(公告)号：US11714932B2
公开(公告)日：2023-08-01
申请号：US17006562
申请日：2020-08-28
发明人： Shilin Chen , Shiwei Qin
CPC分类号： G06F30/17 , E21B10/62 , E21B10/54 , E21B2200/20
摘要： A drill bit design generator uses drill bit metrics to generate drill bit designs with reduced 3D coupled vibration. The drill bit design generator generates an initial set of drill bit designs that are simulated in a deployed or artificial environment. Simulated drill bits according to the initial drill bit designs have gyroscopic sensors that detect the presence of 3D coupled vibration. A drill bit simulator tracks metrics such as side cutting efficiency and drilling efficiency during simulations and correlates these metrics with 3D coupled vibration. The drill bit design generator determines thresholds for these metrics using correlations with 3D coupled vibration and generates updated/new drill bit designs using the metric thresholds.
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公开(公告)号：US20220235613A1
公开(公告)日：2022-07-28
申请号：US17615627
申请日：2019-08-08
摘要： The present disclosure relates to an earth-boring drill bit including a shank, an internal region formed from at least a first alloy using additive manufacturing and secured to the shank, and an exterior region formed from at least a second alloy using additive manufacturing and secured to the internal region using additive manufacturing. The first alloy and the second alloy have a different modulus of elasticity, yield strength, resilience, ductility, hardness, fracture toughness, wear resistance, corrosion resistance, or erosion resistance. The disclosure further includes a method of manufacturing such an earth-boring drill by depositing a plurality of layers according to a drill bit specification using additive manufacturing.
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公开(公告)号：US11332980B2
公开(公告)日：2022-05-17
申请号：US16651970
申请日：2018-09-28
发明人： Robert E. Grimes , Steven Craig Russell , Kenneth Evans , Stephen Manson Slavens , Reed W. Spencer
IPC分类号： E21B10/55 , E21B10/42 , E21B7/06 , E21B17/10 , E21B10/54 , E21B12/00 , E21B10/62 , E21B10/43 , E21B7/04 , E21B10/567 , B22F5/00
摘要： A drill bit for removing subterranean formation material in a borehole comprises a bit body comprising a longitudinal axis, a plurality of blades extending radially outward from the longitudinal axis along a face region of the bit body and extending axially along a gauge region of the bit body, and an insert coupled to at least one blade in the gauge region. The insert comprises an elongated body having an upper surface, a lower surface, and a longitudinal axis extending centrally therethrough and intersecting the upper and lower surfaces. The upper surface comprises a bearing surface for supporting for the drill bit and providing a surface on which the subterranean formation being drilled rubs against the insert without exceeding the compressive strength of the selected formation. The insert is coupled to the blade such that the upper surface thereof extends radially beyond an outer surface of the blade and the lower surface thereof extends radially below the outer surface of the blade.
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公开(公告)号：US20220067234A1
公开(公告)日：2022-03-03
申请号：US17006562
申请日：2020-08-28
发明人： Shilin Chen , Shiwei Qin
摘要： A drill bit design generator uses drill bit metrics to generate drill bit designs with reduced 3D coupled vibration. The drill bit design generator generates an initial set of drill bit designs that are simulated in a deployed or artificial environment. Simulated drill bits according to the initial drill bit designs have gyroscopic sensors that detect the presence of 3D coupled vibration. A drill bit simulator tracks metrics such as side cutting efficiency and drilling efficiency during simulations and correlates these metrics with 3D coupled vibration. The drill bit design generator determines thresholds for these metrics using correlations with 3D coupled vibration and generates updated/new drill bit designs using the metric thresholds.
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公开(公告)号：US11230890B2
公开(公告)日：2022-01-25
申请号：US16480631
申请日：2017-12-12
摘要： A well drilling bit for drilling bedrocks includes a columnar bit body, and a drilling fluid flow path formed in the bit body to wash away drilled cuttings from a bottomhole and/or a periphery of the bit body. The flow path is provided with a venturi mechanism including a venturi tube having a reduced-diameter portion where a cross sectional area is reduced and capable of generating a decompression region around a tip of the bit body, the decompression region being more decompressed than a surrounding by the Venturi effect.
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公开(公告)号：US11203904B2
公开(公告)日：2021-12-21
申请号：US16331917
申请日：2016-12-21
摘要： Fixed-cutter matrix bits comprising hardfaced elements on the gauge pads, and methods of manufacture and using. An example fixed-cutter matrix bit comprises a matrix bit body, a plurality of cutter elements secured at fixed locations to the matrix bit body, and a plurality of gauge pads disposed on the matrix bit body; wherein at least one of the gauge pads includes a hardfaced exterior surface. The hardfaced exterior surface may comprise a material selected from the group consisting of tungsten, niobium, vanadium, molybdenum, silicon, titanium, tantalum, zirconium, chromium, yttrium, boron, carbon, carbides thereof, nitrides thereof, borides thereof, oxides thereof, silicides thereof, and combinations thereof. The hardfaced exterior surface may be fused to the at least one gauge pad during the infiltration process of manufacturing the matrix bit body.
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公开(公告)号：US11073009B2
公开(公告)日：2021-07-27
申请号：US16310810
申请日：2016-06-29
发明人： Wei Chen , Christopher Bogath , Richard John Harmer , Yani Dong , Chanhui Bin , Yuelin Shen , Sujian Huang
IPC分类号： E21B44/02 , E21B44/00 , E21B47/024 , E21B10/54
摘要： A method for drilling a well includes applying energy input to a drill string (31) by at least one of rotating the drill string (31) from surface and operating a drilling motor (41) disposed in the drill string (31) to operate a drill bit (2) at a bottom of the drill string (31); an amount of the applied energy not consumed in drilling formations caused by at least one of motion, deformation, and interaction of the drill string (31) is calculated; an amount of the applied energy used to drill formations below the drill bit (2) is calculated; and at least one drilling operating parameter is adjusted based on energy calculation before or during drilling operation.
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公开(公告)号：US11035176B1
公开(公告)日：2021-06-15
申请号：US16748262
申请日：2020-01-21
发明人： Greg Carlos Topham , Renato Ventura
IPC分类号： E21B10/567 , E21B10/62 , C22C26/00 , E21B10/46 , F16C33/04 , F16C33/26 , B24D18/00 , E21B10/54 , E21B10/573
摘要： Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) including a polycrystalline diamond (“PCD”) table having a structure for enhancing at least one of abrasion resistance, thermal stability, or impact resistance. In an embodiment, a PDC includes a PCD table. The PCD table includes a lower region including a plurality of diamond grains exhibiting a lower average grain size and at least an upper region adjacent to the lower region and including a plurality of diamond grains exhibiting an upper average grain size. The lower average grain size may be at least two times greater than that of the upper average grain size. The PDC includes a substrate having an interfacial surface that is bonded to the lower region of the PCD table. Other embodiments are directed methods of forming PDCs, and various applications for such PDCs in rotary drill bits, bearing apparatuses, and wire-drawing dies.
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9.发明授权公开(公告)号：US10760346B2
公开(公告)日：2020-09-01
申请号：US15662603
申请日：2017-07-28
发明人： Jon David Schroder , John Abhishek Raj Bomidi , Kegan L. Lovelace , William A. Moss, Jr. , Alexander Rodney Boehm
IPC分类号： E21B10/62 , E21B10/42 , E21B10/573 , E21B10/55 , E21B10/54
摘要： A rotatable cutter may comprise a rotatable element, a stationary element, and a releasable interface. The releasable interface may be configured to substantially inhibit rotation of the rotatable element when the rotatable element and the stationary element are at least in partial contact. An earth-boring tool may include one or more rotatable elements.
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公开(公告)号：US10760342B2
公开(公告)日：2020-09-01
申请号：US16329329
申请日：2016-10-05
IPC分类号： E21B10/43 , E21B10/54 , E21B10/633 , E21B10/567
摘要： 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 body. A biasing device is positioned within a device pocket defined within the bit body to bias the compliant retainer against the outer circumferential surface of the rolling element. The compliant retainer secures the rolling element within the cavity while an arcuate portion of the rolling element protrudes from the cavity and exposes a full axial width of the rolling element.
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