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91. 发明授权

US11879298B2 Drive sub for a drilling assembly 有权
公开(公告)号：US11879298B2
公开(公告)日：2024-01-23
申请号：US17638003
申请日：2020-08-27
申请人： REFLEX INSTRUMENTS ASIA PACIFIC PTY LTD
发明人： Andrew Phillip Beach , Amir Mokaramian
IPC分类号： E21B17/046 , E21B21/00 , E21B10/64 , E21B17/10
CPC分类号： E21B17/0465 , E21B10/64 , E21B21/00 , E21B17/1085
摘要： A drive sub for a drilling assembly includes a tubular body configured to receive and releasably engage a drilling tool. The body has inner and outer faces and further has a castellated edge provided on its operative downhole end, which edge defines a plurality of lugs separated from each other by intervening slots. In one aspect the drive sub has a contour profile provided at least partially along a circumference of the castellated edge, wherein the contour profile traverses the castellated edge substantially from the inner face to the outer face. In another aspect the drive sub has a channel provided in each of the lugs, wherein the channel at least partially traverses the lugs and leads from an inlet opening on the castellated edge to an outlet opening on the outer face. The contour profile and/or channel facilitate flow of drilling fluid and cuttings past the lugs during use.

92. 发明授权

US11859459B2 Downhole tool 有权
公开(公告)号：US11859459B2
公开(公告)日：2024-01-02
申请号：US17982773
申请日：2022-11-08
申请人： WELLTEC A/S
发明人： Jørgen Hallundbæk
IPC分类号： E21B31/16 , E21B10/26 , E21B10/40 , E21B10/64 , E21B31/107 , E21B31/20
CPC分类号： E21B31/16 , E21B10/26 , E21B10/40 , E21B10/64 , E21B31/107 , E21B31/20
摘要： A downhole tool, for removing a restriction in a well tubular metal structure having a wall and an inner diameter, has a tool axis and a tool body having a first part and a second part, an electrical motor arranged in the first part for rotating a rotatable shaft, and a core bit arranged in the second part and having a first end connected with the rotatable shaft and a second end having a cutting edge. The second part of the downhole tool further includes a locator for locating the rim section, the locator being rotable with the core bit until the locator locates the rim section and a threshold value is reached.

93. 发明申请

US20230064823A1 DOWNHOLE TOOL 有权
公开(公告)号：US20230064823A1
公开(公告)日：2023-03-02
申请号：US17982773
申请日：2022-11-08
申请人： WELLTEC A/S
发明人： Jørgen HALLUNDBÆK
IPC分类号： E21B31/16 , E21B10/26 , E21B10/40 , E21B10/64 , E21B31/107 , E21B31/20
摘要： A downhole tool, for removing a restriction in a well tubular metal structure having a wall and an inner diameter, has a tool axis and a tool body having a first part and a second part, an electrical motor arranged in the first part for rotating a rotatable shaft, and a core bit arranged in the second part and having a first end connected with the rotatable shaft and a second end having a cutting edge. The second part of the downhole tool further includes a locator for locating the rim section, the locator being rotable with the core bit until the locator locates the rim section and a threshold value is reached.

94. 发明授权

US10107045B2 Drilling tool 有权
公开(公告)号：US10107045B2
公开(公告)日：2018-10-23
申请号：US15126055
申请日：2015-03-10
申请人： MITSUBISHI MATERIALS CORPORATION
发明人： Kazuyoshi Nakamura , Hiroshi Ota
IPC分类号： E21B10/64 , E21B7/20 , E21B10/26 , E21B10/46 , E21B10/60
摘要： The drilling tool includes a circular-cylindrical casing pipe; an annular ring bit disposed at a leading end of the casing pipe so as to be coaxial with the casing pipe and rotatable around a central axis of the casing pipe; and a pilot bit inserted into the casing pipe and has a leading end disposed at an inner peripheral part of the ring bit. The ring bit is engaged with the pilot bit in a rotational direction, and thereby is rotatable integrally with the pilot bit and is locked to the leading end of the pilot bit. Drilling tips are mounted on the leading ends of the pilot bit and the ring bit, and first drilling tips at an outermost periphery of the pilot bit and second drilling tips at an innermost periphery of the ring bit overlap each other in a rotational trajectory around the central axis.

95. 发明授权

US10030449B2 Apparatus for drilling and lining a borehole 有权
公开(公告)号：US10030449B2
公开(公告)日：2018-07-24
申请号：US14389973
申请日：2013-03-11
申请人： LKAB WASSARA AB
发明人： Fredrik Egerström
IPC分类号： E21B1/00 , E21B10/36 , E21B17/14 , E21B3/00 , E21B7/20 , E21B10/64 , E21B21/12 , E21B4/14 , E21B17/046
摘要： An arrangement at a drill includes a drill bit intended to be inserted at its neck into a chuck in a down-the-hole drill, a control means for guiding the drill and a lining pipe, a coupling arrangement in the form of a bayonet coupling or similar with which the drill can be coupled to the control means in a manner that allows them to be separated and that in its freed condition allows the drill, together with the down-the-hole drill, to be withdrawn through the lining pipe, a flushing passage for the supply of flushing agent in front of the drill and an evacuation passage for the removal of drilling cuttings together the flushing agent. It also includes a casing shoe that can be applied at the forward end of the lining pipe and a contact surface arranged at a stationary part of the down-the-hole drill.

96. 发明授权

US09869134B2 Drilling tool 有权
公开(公告)号：US09869134B2
公开(公告)日：2018-01-16
申请号：US14771594
申请日：2014-03-06
申请人： MITSUBISHI MATERIALS CORPORATION
发明人： Kazuyoshi Nakamura , Hiroshi Ota
IPC分类号： E21B10/60 , E21B7/20 , E21B10/18 , E21B10/56 , E21B10/64 , E21B10/43
CPC分类号： E21B10/602 , E21B7/20 , E21B10/18 , E21B10/43 , E21B10/56 , E21B10/64
摘要： The inner bit is provided with: a supply hole which is open at the distal end portion of the inner bit; and a discharge groove which is formed in an outer peripheral surface of the inner bit and extends in the direction of the axial line. The supply hole is provided with: a distal end blow hole which is open in a distal end surface of the distal end portion of the inner bit; and an outer peripheral blow hole which is open in an outer peripheral surface of the distal end portion of the inner bit. An outer peripheral groove via which the outer peripheral blow hole communicates with the discharge groove is formed in the outer peripheral surface of the inner bit. The outer peripheral groove is covered with the ring bit from the outside in a radial direction.

97. 发明申请

US20180003057A1 Drill Bit for Use with a Friction Bolt 审中-公开
公开(公告)号：US20180003057A1
公开(公告)日：2018-01-04
申请号：US15548553
申请日：2016-02-03
申请人： Fero Group Pty Ltd
发明人： Matthew David McLaren
IPC分类号： E21D21/00 , E21B10/64
CPC分类号： E21D21/0053 , E21B10/62 , E21B10/64 , E21D21/004 , E21D21/0046
摘要： A drill bit for a drill assembly including a friction bolt defining a longitudinal axial passage, the drill bit being adapted to be releasibly attached to the friction bolt and comprising: (i) a leading end including a cutting part; (ii) a following end; and (iii) an outer surface defining a friction bolt engaging means adapted to releasibly engage with the leading end of the friction bolt.

98. 发明申请

US20090288886A1 Retrieval Tool With Slips for Retrieving Bottom Hole Assembly During Casing While Drilling Operations 有权
标题翻译：检索工具与钻孔操作期间在套管期间检索底孔组件
公开(公告)号：US20090288886A1
公开(公告)日：2009-11-26
申请号：US12125736
申请日：2008-05-22
申请人： Erik P. Eriksen , Michael E. Moffitt , Tommy M. Warren
发明人： Erik P. Eriksen , Michael E. Moffitt , Tommy M. Warren
IPC分类号： E21B10/64
CPC分类号： E21B7/20 , E21B10/66 , E21B23/08 , E21B23/14
摘要： A casing-while-drilling bottom hole assembly is releasably connected with a casing string. A retrieval tool is run into the casing string and latched to the bottom hole assembly. Slips are mounted to the retrieval tool, the slips being retracted during running in. Differential pressure moves the retrieval tool and bottom hole assembly upward, and the slips engage the casing string to prevent downward movement if the pressure differential drops too low. A flow passage extends through the retrieval tool and the bottom hole assembly. A check valve in the retrieval tool allows downward flow through the flow passage but prevents upward flow, so that fluid may be circulated through the retrieval tool and bottom hole assembly while suspended with the slips.
摘要翻译：套筒钻孔底孔组件可释放地与套管柱连接。检索工具运行到套管柱中并锁定到底部孔组件。滑动件安装到回收工具上，滑块在运行期间缩回。差压将提取工具和底部孔组件向上移动，并且如果压差下降太低，滑块接合套管柱以防止向下运动。流动通道延伸穿过回收工具和底部孔组件。回收工具中的止回阀允许向下流动通过流动通道，但是防止向上流动，使得流体可以在滑动悬挂的同时循环通过收回工具和底部孔组件。

99. 发明授权

US07520343B2 Retrievable center bit 有权
标题翻译：可检索的中心位
公开(公告)号：US07520343B2
公开(公告)日：2009-04-21
申请号：US10906200
申请日：2005-02-08
申请人： John Hughes , Tommy M. Warren
发明人： John Hughes , Tommy M. Warren
IPC分类号： E21B10/64
CPC分类号： E21B10/64
摘要： A retrievable center bit for use with a tubular including an inner bore and a drill shoe cutter mounted thereon. The retrievable center bit may include a body positionable in the bore of the tubular and including an upper end, a lower end and a side outer surface extending therebetween. A cutting surface may be supported on the lower end of the bit body. There may be a locking assembly on the body for releasably locking the bit axially and rotationally to the tubular. A longitudinal bore may extend from the upper end into the body and the body may include a fluid port extending from the bore to open on the cutting surface and a lateral fluid port extending from the bore opening on the side outer surface positionable adjacent the drill shoe cutter when the bit is locked to the tubular.
摘要翻译：一种可回收的中心钻头，用于包括安装在其上的内孔和钻杆切割机的管状管。可回收的中心钻头可以包括可定位在管的孔中的主体，并且包括上端，下端和在其间延伸的侧外表面。切割表面可以被支撑在钻头体的下端。在主体上可以存在锁定组件，用于可释放地将钻头轴向和旋转地锁定到管状物上。纵向孔可以从上端延伸到主体中，并且主体可以包括从孔延伸到在切割表面上打开的流体端口和从钻孔开口延伸的侧流体端口当钻头锁定到管状物上时，刀具。

100. 发明授权

US07182156B2 System for overburden drilling 有权
标题翻译：上覆钻井系统
公开(公告)号：US07182156B2
公开(公告)日：2007-02-27
申请号：US10459465
申请日：2003-06-12
申请人： Luc Charland , Roger Charland
发明人： Luc Charland , Roger Charland
IPC分类号： E21B10/64
CPC分类号： E21B7/20 , E21B10/40 , E21B10/64
摘要： The present invention provides a global drilling system comprising a crown bit, a driver drill bit and a square drill bit. The crown bit has a tubular body with an inner surface and an outer surface, wherein the inner surface circumscribes a hollow passageway, and a pair of projections extending into said hollow passageway. The pair of projections are positioned substantially opposite one another on said inner surface. The driver drill bit has a drilling head with a pair of cut-away portions positioned substantially opposite one another and a pair of locking surfaces adapted for engaging the projections on the crown bit. The square drill bit has a drilling head with two tapered cut-away portions positioned substantially opposite one another. Each cut-away portion corresponds to one of the pair of projections such that the drilling head is able to pass through the hollow passageway of the crown bit.
摘要翻译：本发明提供了一种全球钻井系统，其包括冠位，驱动钻头和方钻头。冠形钻头具有内表面和外表面的管状体，其中内表面围绕中空通道，以及延伸到所述中空通道中的一对突起。所述一对突起在所述内表面上彼此基本相对地定位。驾驶员钻头具有钻头，其具有基本上彼此相对定位的一对切割部分，以及适于接合牙冠钻头上的突起的一对锁定表面。方形钻头具有钻头，其具有基本上彼此相对定位的两个锥形切割部分。每个切割部分对应于一对突起中的一个，使得钻头能够穿过冠状钻头的中空通道。

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