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公开(公告)号：US20240328259A1
公开(公告)日：2024-10-03
申请号：US18191587
申请日：2023-03-28
摘要： An earth-boring tool may include a tool body, at least one blade, and a roller cone pocket defined in the tool body adjacent the at least one blade. A surface of the roller cone pocket may define at least one protruding ridge. The earth-boring tool may further include a roller cone assembly disposed in the pocket. The roller cone assembly may include a plurality of inserts or teeth extending from a surface of the roller cone assembly. The at least one protruding ridge is located between longitudinally adjacent inserts or teeth.
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2.发明申请公开(公告)号：US20210293093A1
公开(公告)日：2021-09-23
申请号：US16823131
申请日：2020-03-18
发明人： Stephen Duffy , Scott Mayer
IPC分类号： E21B10/16
摘要： A tool for drilling a borehole through a formation. The tool comprises a body, blades having rotationally leading surfaces extending from the tool body, cutting elements secured at least partially within cutting element pockets, and linear or rounded transition surfaces between the cutting element pockets and the rotationally leading surface of the blades. The rounded transition surfaces have a radius of curvature between about 3 and 150 millimeters. The disclosure also includes a method of manufacturing an earth-boring downhole tool comprising: providing a tool body and blades comprising a rotationally leading surface extending from the tool body; Forming cutting element pockets into the blades proximate the rotationally leading surface of the blades; Forming linear or rounded transition surfaces between the cutting element pockets and the rotationally leading surface of the blades, the rounded transition surfaces having a radius of curvature between about 3 and 150 millimeters; And securing cutting elements at least partially within the cutting element pockets.
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公开(公告)号：US20210140244A1
公开(公告)日：2021-05-13
申请号：US17086398
申请日：2020-10-31
申请人： Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) , Southwest Petroleum University
发明人： Guorong WANG , Yang TANG , Xin JING , Qingyou LIU , Shouwei ZHOU , Xushen Li , Lin ZHONG , Qingping Li , Yufa HE , Zhong Li , Yanjun Li , Hexing LIU , Jianglin ZHU , Jiang LU , Leizhen WANG
摘要： The present invention relates to a combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation, including a joint, an outer cylinder connected to the joint by thread, a nozzle I mounted in the outer cylinder, a mechanical locking mechanism, a blade telescoping mechanism, an end cap connected to the outer cylinder by thread, a seal ring IV mounted to the end cap, and a nozzle II mounted in the end cap by threaded connection. The present invention achieves integrated operation of conventional drilling and draw-back expanding, which can effectively solve the problems that the existing hydrate drill bit cannot drill a large borehole, cannot mechanically lock an extending position of the blade to stabilize the size of the borehole, and a single crushing method is inefficient.
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公开(公告)号：US10767420B2
公开(公告)日：2020-09-08
申请号：US15846481
申请日：2017-12-19
发明人： Scott McDonough , Joshua Gatell
IPC分类号： E21B10/16
摘要： A drill bit is used for drilling through earthen formations and forming a wellbore. The drill bit includes a bit body having a bit axis, and at least a first cone and a second cone coupled to the bit body. Each of the first and the second cones has a backface, a nose opposite the backface, and a cone axis of rotation. An array of cutting elements coupled to the first or second cones is in a band that lies between the backface and the nose. The cutting elements in the band are arranged at radial positions with respect to the bit axis and at least two adjacent cutting elements are at a same radial position within the array, and the remaining cutting elements are at different radial positions within the array.
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公开(公告)号：US10316589B2
公开(公告)日：2019-06-11
申请号：US14223322
申请日：2014-03-24
发明人： Anton F. Zahradnik , Rudolf Carl Pessier , Don Q. Nguyen , Matthew J. Meiners , Karlos B. Cepeda , Michael S. Damschen , Mark P. Blackman , Jack T. Oldham , Ronny D. McCormick
摘要： A hybrid earth-boring bit comprising a bit body having a central axis, at least one, preferably three fixed blades, depending downwardly from the bit body, each fixed blade having a leading edge, and at least one rolling cutter, preferably three rolling cutters, mounted for rotation on the bit body. A rolling cutter is located between two fixed blades.
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公开(公告)号：US20190071932A1
公开(公告)日：2019-03-07
申请号：US16106286
申请日：2018-08-21
发明人： Federico Bellin
IPC分类号： E21B10/567 , E21B10/16 , B22F3/15
摘要： A cutter for use with a drill bit includes: a substrate for mounting in a pocket of the drill bit and made from a cermet material; a cutting table made from a polycrystalline superhard material and mounted to the substrate; and a shield disposed in an outer recess of the substrate adjacent to the cutting table, mounted to the substrate, extending from the cutting table along a partial length of the substrate, and made from a composite material comprising the polycrystalline superhard material and a ceramic.
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7.发明申请公开(公告)号：US20190063159A1
公开(公告)日：2019-02-28
申请号：US15691219
申请日：2017-08-30
发明人： William Schoen
摘要： An earth-boring tool may include a body and at least one rotatable cutting structure assembly. The rotatable cutting structure assembly may include a leg, a rotatable cutting structure rotatably coupled to the leg, and a resistance actuator configured to impose rotational resistance on the rotatable cutting structure relative to the leg. An earth-boring to may include a plurality of rotatable cutting structure assemblies coupled to the bit body and a plurality of blades coupled to the body. A method of drilling a borehole may include rotating an earth-boring tool within the borehole, causing rotational resistance to be imposed on at least one rotatable cutting structure of the earth-boring tool, causing a blade of the earth-boring tool to be pushed into a sidewall of the borehole, and side cutting the sidewall of the borehole with the blade.
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公开(公告)号：US20190017328A1
公开(公告)日：2019-01-17
申请号：US16030965
申请日：2018-07-10
发明人： Michael Reese , Gregory C. Prevost
IPC分类号： E21B7/06 , E21B10/43 , E21B10/16 , E21B10/14 , E21B10/567
CPC分类号： E21B7/064 , E21B10/14 , E21B10/16 , E21B10/43 , E21B10/567
摘要： A drill bit mounted on or integral to a mandrel on the distal end of a downhole motor directional assembly is provided. The drill bit is in a fixed circumferential relationship with the activating mechanism of one or more dynamic lateral pads (DLP). The technologies of the present application assist in and optionally control the extent of lateral movement of the drill bit. The technologies include, among other things, the placement and angulation of the cutting structures in the cone areas of the blades on the drill bit.
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9.发明申请EARTH-BORING ROTARY TOOLS HAVING FIXED BLADES AND ROLLING CUTTER LEGS, AND METHODS OF FORMING SAME 审中-公开具有固定刀片和滚刀切割机的接地旋转工具及其形成方法公开(公告)号：US20160230468A1
公开(公告)日：2016-08-11
申请号：US15131440
申请日：2016-04-18
摘要： An earth-boring rotary tool includes a tool body, at least one fixed blade associated with the tool body and configured to carry a fixed cutting element, and at least one leg configured to carry a rolling cutter. The tool body has a slot extending longitudinally generally parallel to a longitudinal axis defining an axial center of the tool body. The slot is at least partially defined by a first sidewall, a second sidewall opposing the first sidewall, a third sidewall extending between the first sidewall and the second sidewall, and an axial end wall of the tool body. A portion of the leg is disposed within the slot of the tool body and abuts the first sidewall of the tool body. A wedge is disposed within the slot and pins the leg to the tool body within the slot.
摘要翻译： 一种镗孔旋转工具包括工具主体，至少一个与工具主体相关联的固定刀片，并且构造成承载固定的切割元件，以及至少一个脚部，其构造成承载滚动切割器。 工具主体具有纵向大致平行于限定工具主体的轴向中心的纵向轴线延伸的狭槽。 狭槽至少部分地由第一侧壁，与第一侧壁相对的第二侧壁，在第一侧壁和第二侧壁之间延伸的第三侧壁以及工具主体的轴向端壁限定。 腿部的一部分设置在工具主体的槽内并且邻接工具主体的第一侧壁。 楔形物设置在槽内，并将腿部固定在槽内的工具主体上。
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公开(公告)号：US09410378B2
公开(公告)日：2016-08-09
申请号：US14149188
申请日：2014-01-07
发明人： Zengyuan Shao , Bin Pu , Xiaobing Fan
CPC分类号： E21B10/16 , E21B10/08 , E21B10/18 , E21B17/1092
摘要： A tricone rock bit for horizontal wells and hard formation wells includes three head sections and three cones arranged at the lower ends of the head sections, where the supper parts of the three head sections are connected together to form one integrated drill bit body; jet nozzle bosses are arranged between the head sections on the drill bit body; jet nozzles are mounted in nozzle holes of the jet nozzle bosses; gauge cutting elements are arranged on the top rear of the OD of the head sections, forming a gauge surface on the top of the head sections; the front face of the head sections is a ruled surface, inclining backwards at an angle α, and inclining outwards at an angle β. The tricone rock bit has low lateral vibrations, high stability, good effects of bottom hole cleaning and cutting element cooling, long service life and high penetration rate.
摘要翻译： 用于水平井和硬地层井的三角岩钻头包括三个头部和三个锥体，三个头部布置在头部的下端，三个头部的后部部分连接在一起，形成一个集成的钻头体; 喷嘴凸台布置在钻头体的头部之间; 喷嘴安装在喷嘴凸台的喷嘴孔中; 表头切割元件布置在头部部分的OD的顶部后部，在头部部分的顶部形成计量表面; 头部的前表面是刻度表面，以角度α向后倾斜，并以角度β向外倾斜。 三角岩钻头横向振动小，稳定性好，底孔清洗效果好，切削元件冷却效果好，使用寿命长，穿透率高。
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