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    Rotary drill bit compensating for changes in hardness of geological formations
    51.
    发明授权
    Rotary drill bit compensating for changes in hardness of geological formations 有权
    旋转钻头补偿地质构造硬度变化

    公开(公告)号：US06547017B1

    公开(公告)日：2003-04-15

    申请号：US09192248

    申请日：1998-11-16

    Applicant: William Banning Vail, III

    Inventor： William Banning Vail, III

    IPC: E21B1046

    CPC classification number: E21B10/006 ,  E21B10/46

    Abstract: A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a self-actuating mechanism responsive to the hardness of the geological formation to minimize the time necessary to drill a borehole. A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a mechanism controllable from the surface of the earth to change the mechanical configuration of the bit to minimize the time necessary to drill a borehole. A monolithic long lasting rotary drill bit for drilling a hole into a geological formation having hardened rods composed of hard material such as tungsten carbide that are cast into a relatively soft steel matrix material to make a rotary drill bit that compensates for wear on the bottom of the drill bit and that also compensates for lateral wear of the drill bit using passive, self-actuating mechanisms, triggered by bit wear to drill relatively constant diameter holes.

    Abstract translation: 一种持久的旋转钻头，用于将钻孔钻入可变硬度地质构造中，其具有响应于地质构造的硬度的自动致动机构，以最小化钻孔所需的时间。 一种持久的旋转钻头，用于将钻孔钻入可变硬度地质构造中，其具有可从地球表面控制的机构，以改变钻头的机械结构，以最小化钻孔所需的时间。 一种整体式持久的旋转钻头，用于向具有由硬质材料（例如碳化钨）组成的硬化棒的地质结构中钻孔，所述硬化棒被铸成相对较软的钢基体材料，以制造用于补偿底部的磨损的旋转钻头 钻头，并且还通过被钻头磨损触发的被动的自动致动机构补偿钻头的横向磨损，以钻出相对恒定的直径的孔。

    Unplanar non-axisymmetric inserts
    52.
    发明申请
    Unplanar non-axisymmetric inserts 有权
    非平面非轴对称插入

    公开(公告)号：US20020108790A1

    公开(公告)日：2002-08-15

    申请号：US09780963

    申请日：2001-02-09

    Inventor： Ronald K. Eyre ,  Stewart Middlemiss

    IPC: E21B010/46

    CPC classification number: E21B10/5673 ,  E21B10/006 ,  E21B10/573 ,  E21B10/5735

    Abstract: Cutting elements for incorporation in a drill bit are provided having a body having an end face interfacing with an ultra hard material cutting layer. A main depression having a nonplanar surface is formed on the substrate and extending to the peripheral edge of the substrate subjected to the highest impact loads during drilling. This edge is immediately below the edge of the cutting layer which makes direct contact with the earth formations during drilling. The main depression is formed by forming a plurality of secondary depressions or steps. A second main depression is formed by forming a plurality of secondary depressions or steps. The second main depression also extends to the peripheral edge of the substrate. An ultra hard material layer is bonded to the end face of the cutting element body over the main depressions.

    Abstract translation: 提供了用于结合在钻头中的切割元件，其具有具有与超硬材料切割层相接合的端面的主体。 具有非平面表面的主凹陷形成在基底上并且延伸到在钻孔期间受到最高冲击载荷的基底的周边边缘。 该边缘紧邻切割层的边缘，在钻孔期间与地层直接接触。 主凹陷通过形成多个二次凹陷或台阶形成。 通过形成多个次级凹陷或台阶形成第二主凹陷。 第二主凹陷也延伸到基底的周缘。 超硬材料层在主凹部上结合到切割元件主体的端面。

    Cutting matrix and method applying the same
    53.
    发明申请
    Cutting matrix and method applying the same 有权
    切割矩阵及其应用方法

    公开(公告)号：US20010026736A1

    公开(公告)日：2001-10-04

    申请号：US09755889

    申请日：2001-01-02

    Inventor： Gerald D. Lynde

    IPC: B23B027/22 ,  B26D001/00

    CPC classification number: B23B27/16 ,  B23B27/14 ,  B23B27/22 ,  E21B10/006 ,  E21B29/002 ,  Y10T407/235 ,  Y10T407/24 ,  Y10T407/245 ,  Y10T407/26 ,  Y10T407/27

    Abstract: A method for applying cutting elements to a tool for cutting or milling a metal item in a well is disclosed, along with the cutting element used in the method. The tool can include one or more blades extending outwardly or downwardly from the tool for cutting a metal item such as the wall of a casing string, or for removing a predetermined length of a casing string in a cutting action. The blade or blades have cutting elements positioned on the leading faces of the blades to engage the casing string or other metal item in the bore hole. Each cutting element is composed of a plurality of effective cutting faces. Each cutting face can have a substantially triangular shape, or a substantially square shape, or some other geometric shape. The cutting elements can be arranged in a random pattern. Each cutting element can be oriented in a random orientation relative to the blade. The cutting elements are shaped so that, regardless of the positioning or orientation of a given cutting element, it will continually present a sharp cutting edge to the metal object being cut. Each cutting face of each cutting element can also have one or more surface irregularities to cause the metal chips cut from the casings to break off at short lengths.

    Abstract translation: 公开了一种将切割元件应用于用于切割或铣削井中的金属物品的工具的方法以及该方法中使用的切割元件。 工具可以包括从工具向外或向下延伸的一个或多个刀片，用于切割诸如套管柱的壁的金属物品，或者用于在切割动作中移除预定长度的套管柱。 刀片或刀片具有定位在刀片的前表面上的切割元件，以与套管柱或钻孔中的其它金属物体接合。 每个切割元件由多个有效的切割面组成。 每个切割面可以具有基本上三角形的形状，或者基本上为正方形的形状，或者一些其他几何形状。 切割元件可以以随机图案排列。 每个切割元件可以相对于叶片以随机取向定向。 切割元件的形状使得不管给定的切割元件的定位或取向如何，它将连续地向被切割的金属物体提供锋利的切割边缘。 每个切割元件的每个切割面也可以具有一个或多个表面凹凸，以使得从壳体切割的金属切屑以短长度断裂。

    Fluid flow control for drag bits
    55.
    发明授权
    Fluid flow control for drag bits 失效
    拖曳钻头的流体流量控制

    公开(公告)号：US4776411A

    公开(公告)日：1988-10-11

    申请号：US28990

    申请日：1987-03-23

    Applicant: Kenneth W. Jones

    Inventor： Kenneth W. Jones

    IPC: E21B10/00 ,  E21B10/54 ,  E21B10/55 ,  E21B10/56 ,  E21B10/567 ,  E21B10/60

    CPC classification number: E21B10/55 ,  E21B10/006 ,  E21B10/567 ,  E21B10/602

    Abstract: A drag type drilling bit having a plurality of radially disposed raised lands on the bit face is disclosed. A multiplicity of polycrystalline diamond compacts are strategically disposed on the raised lands. At least a pair of lands are joined at the outside periphery of the bit thereby closing the valley formed between the lands, thus forming a plenum for drilling fluid that exits the bit interior through ports or nozzles communicating therewith. Highly turbulent fluid confined in the plenum continually scrubs and scavenges the hole bottom while simultaneously and uniformly cooling and cleaning the PDC cutters during operation of the bit in a borehole.

    Abstract translation: 公开了一种在钻头面上具有多个径向设置的凸起台阶的拖曳式钻头。 多个多晶金刚石压块有策略地设置在凸起的土地上。 至少一对焊盘在钻头的外周边连接，从而封闭在焊盘之间形成的谷，从而形成用于钻出通过与其连通的端口或喷嘴离开钻头内部的流体的集气室。 限制在通风室中的高度湍流流体持续地擦洗和清除孔底部，同时并且均匀地冷却和清洁钻头在钻孔中的钻头期间的PDC切割器。

    Self sharpening drag bit for sub-surface formation drilling
    56.
    发明授权
    Self sharpening drag bit for sub-surface formation drilling 失效
    用于表面形成钻孔的自磨削阻力钻头

    公开(公告)号：US4533004A

    公开(公告)日：1985-08-06

    申请号：US570860

    申请日：1984-01-16

    Applicant: Gunes M. Ecer

    Inventor： Gunes M. Ecer

    IPC: E21B10/00 ,  E21B10/48 ,  E21B10/56 ,  E21B10/567 ,  E21B10/46

    CPC classification number: E21B10/567 ,  E21B10/006 ,  E21B10/48 ,  E21B10/5673

    Abstract: A self-sharpening rotary drag bit assembly comprises:(a) a carrier body adapted to be rotated about a first axis, and having a drilling end,(b) cutters carried by the body to be exposed for cutting at the drilling end of the body, the cutters having thereon layers of hard materials defining cutting edges to engage and cut the drilled formation as the body rotates, the cutters also including reinforcement material supporting said layers to resist deflection thereof under cutting loads,(c) said body and said reinforcement material being characterized as abradable by the formation as the bit drilling end rotates in engagement with the formation.

    Abstract translation: 自磨锐旋转牵引钻头组件包括：（a）适于围绕第一轴线旋转并且具有钻头端的承载体，（b）被所述主体承载的切割器在所述钻头的所述钻削端处被切割 （c）所述主体和所述加强件，所述切割器具有限定切割边缘的硬质材料层，以在所述主体旋转时接合和切割所钻出的地层，所述切割器还包括支撑所述层的加强材料，以抵抗在切割载荷下的偏转， 当钻头钻头端部与地层接合时，材料被表征为可以通过地层磨损。

    Rotary drill bit
    57.
    发明授权
    Rotary drill bit 失效
    旋转钻头

    公开(公告)号：US4230194A

    公开(公告)日：1980-10-28

    申请号：US14637

    申请日：1979-02-23

    Applicant: Clifford K. Logan, Jr.

    Inventor： Clifford K. Logan, Jr.

    IPC: E21B10/00 ,  E21B10/12 ,  E21B10/14 ,  E21B10/16 ,  E21B10/18 ,  E21B9/12

    CPC classification number: E21B10/18 ,  E21B10/006 ,  E21B10/12 ,  E21B10/14 ,  E21B10/16

    Abstract: An improved rotary drill bit comprised of two or more elongated generally cylindrical drill members, the lower ends of which form a cutting face. A plurality of vertically spaced rows of rotatable cutting members are positioned around and between the drill members and are journaled thereto whereby as the lowermost row of the rotatable cutting members and the lower ends of the drill members wear away, the next adjacent row of cutting members is exposed.

    Abstract translation: 一种改进的旋转钻头，其由两个或更多细长的大体圆柱形钻具构成，其下端形成切割面。 多个可垂直间隔的可旋转切割构件的行定位在钻构件周围并且位于钻构件之间并且被轴颈连接到其上，由此当可旋转切割构件的最下排和钻构件的下端磨损时，下一个相邻的切割构件行 被暴露。

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