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公开(公告)号：US12084919B2
公开(公告)日：2024-09-10
申请号：US17595569
申请日：2020-05-21
摘要： A hybrid bit includes a fixed cutting structure and a rolling cutting structure. The fixed cutting structure includes a plurality of fixed cutting elements. The rolling cutting structure is coupled to the fixed cutting structure and includes a journal bore extending through the rolling cutting structure from a leading face to a trailing face, and a radially outer surface. The rolling cutting structure also includes a plurality of cutting elements extending from the radially outer surface of the rolling cutting structure.
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公开(公告)号：US12044074B2
公开(公告)日：2024-07-23
申请号：US18066951
申请日：2022-12-15
摘要： A drill bit for forming a wellbore through a geologic formation includes a connector configured for connection to a drill string and a bit body coupled to the connector. A fixed cutting element is mounted on the bit body for rotation with the bit body and a slot extends through the bit body. A rolling cutting blade is supported in the slot such that an exposed segment of the cutting blade protrudes from slot and concealed segments of the rolling cutting blade adjacent the exposed segment are disposed within the slot. The rolling cutting blade rotates to thereby conceal the exposed segment and expose the concealed segments. A plurality of rotating cutting elements are supported on a periphery of the rolling cutting blade.
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公开(公告)号：US20230374865A1
公开(公告)日：2023-11-23
申请号：US18247111
申请日：2021-09-28
摘要： A hybrid bit includes fixed blades and wheel support structures. The wheel support structure includes a wheel inserted into a slot between a leading support and a trailing support. One or more shims fill a gap between a flange and the leading supports. An elongated seal between the wheel and the supports is provided to seal the wheel support.
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公开(公告)号：US20220374561A1
公开(公告)日：2022-11-24
申请号：US17871897
申请日：2022-07-23
发明人： Guangjian Dong , Yingjie Chen , Jianhong Fu , Kanhua Su , Qiang Han
IPC分类号： G06F30/17 , E21B10/43 , E21B10/14 , E21B10/567 , E21B49/00
摘要： The invention discloses a drill bit design method based on rock crushing principle with local variable strength, including: drill bit is divided into local crushing feature regions; strength mode factors of the local crushing feature regions are calculated; a difference among strength mode factors of the local crushing feature regions is obtained to obtain a vector sum of horizontal cutting forces of the drill bit tooth corresponding to the same group of cutting tooth on the drill bit; treating the difference among the strength mode factors of the local crushing feature region as a target control condition for drill bit design. Based on the rock crushing principle with local variable strength, after dividing the symmetrical cutting tooth into groups, the strength variation factors of the symmetrical position are adjusted and balanced, so that the rock crushing strength of different local crushing feature regions can be changed in a targeted manner.
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公开(公告)号：US10995557B2
公开(公告)日：2021-05-04
申请号：US16605301
申请日：2017-08-17
摘要： A method of manufacturing, assembling, configuring, and/or using a hybrid drill bit is disclosed. An illustrative example includes inserting a rolling cutting structure into a central bore of a bit body through an upper connector section of the bit body toward a lower end portion of the bit body. The bit body has a rotational axis and a plurality of blades at the lower end portion. The upper connector section is configured to be coupled to a lower end of a drill string. Each of the plurality of blades extends radially from the bit body about the rotational axis at the lower end portion and includes a plurality of cutters embedded therein.
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公开(公告)号：US10988988B2
公开(公告)日：2021-04-27
申请号：US16885460
申请日：2020-05-28
摘要： Drill bits and methods relating thereto are disclosed. In an embodiment, the drill bit includes a body having a plurality of legs each having a lower section that has a leading surface and a trailing surface. A plurality of cone cutters are each rotatably mounted to the lower section of one of the legs, each having a cone axis, and including a first plurality of cutter elements arranged about the cone axis such that each is shear the formation when the body is rotated about the bit axis.
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公开(公告)号：US10907414B2
公开(公告)日：2021-02-02
申请号：US15807853
申请日：2017-11-09
发明人： William Schoen
摘要： An earth-boring tool includes a body, a plurality of blades attached to the body and extending at least to a nose region of the earth-boring tool, a first rotatable cutting structure assembly coupled to the body, and a second rotatable cutting structure assembly coupled to the body. The first rotatable cutting structure assembly includes a first leg and a first rotatable cutting structure rotatably coupled to the first leg. A first cutting profile of the first rotatable cutting structure extends at least from a gage region of the earth-boring tool and at least partially through a cone region of the earth-boring tool. The second rotatable cutting structure assembly includes a second leg and a second rotatable cutting structure rotatably coupled to the second leg. A second cutting profile of the second rotatable cutting structure extends only from the gage region of the earth-boring tool and to an innermost boundary of a nose region of the earth-boring tool.
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公开(公告)号：US10704330B2
公开(公告)日：2020-07-07
申请号：US15039622
申请日：2014-12-05
摘要： Drill bits and methods relating thereto are disclosed. In an embodiment, the drill bit includes a body having a plurality of legs each having a lower section that has a leading surface and a trailing surface. A plurality of cone cutters are each rotatably mounted to the lower section of one of the legs, each having a cone axis, and including a first plurality of cutter elements arranged about the cone axis such that each is shear the formation when the body is rotated about the bit axis.
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9.发明申请公开(公告)号：US20190352970A1
公开(公告)日：2019-11-21
申请号：US15983639
申请日：2018-05-18
摘要： An earth-boring tool includes a body, at least one blade, and at least one rotatable cutting structure. The blade extends axially from the body and extends radially outward from a center longitudinal axis of the earth-boring tool to less than an outer diameter of the earth-boring tool. The blade defines a first cutting profile. The at least one rotatable cutting structure assembly is coupled to the body and includes a leg extending axially from the body and a rotatable cutting structure rotatably coupled to the leg. The rotatable cutting structure defines a second cutting profile extending to the outer diameter of the earth-boring tool. The first cutting profile overlaps with the second cutting profile in a radial direction in an amount that is less than 20% of the outer diameter of the earth-boring tool. A method of making an earth-boring tool.
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公开(公告)号：US10352101B2
公开(公告)日：2019-07-16
申请号：US14766509
申请日：2014-02-06
申请人： Liyuan Yang
发明人： Liyuan Yang
IPC分类号： E21B10/14 , E21B10/42 , E21B10/43 , E21B10/10 , E21B10/50 , E21B10/54 , E21B10/46 , E21B10/52 , E21B10/55
摘要： A composite drill bit has one or more scraping-wheel cutting units disposed on fixed-blade. The drill bit comprises a bit body, fixed-blades, and scraping-wheels. The angular deflection of the scraping-wheel is in the range of 20°≤|α|≤90°. The scraping-wheel cutting unit has a scraping-wheel shaft and a scraping-wheel with cutters disposed thereon. The scraping-wheel cutting unit is disposed on the fixed-blade by a rotary connection.
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