知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

344 条记录 (耗时 0.035 秒)

    Roller cone bits with wear and fracture resistant surface
    92.
    发明申请
    Roller cone bits with wear and fracture resistant surface 有权
    滚轮锥头具有耐磨损和抗断裂的表面

    公开(公告)号：US20020162691A1

    公开(公告)日：2002-11-07

    申请号：US09846745

    申请日：2001-05-01

    发明人： Zhigang Fang ,  Anthony Griffo ,  Alysia C. White ,  Chris Cawthorne

    IPC分类号： E21B010/50

    CPC分类号： B22F1/0003 ,  B22F7/06 ,  B22F2005/001 ,  B22F2999/00 ,  C22C32/00 ,  E21B10/08 ,  E21B10/50 ,  B22F3/22

    摘要： Rock bits comprising wear and fracture resistant surface of this invention include a steel bit body having at least one leg extending therefrom. A steel cone is rotatably disposed on the leg. The steel cone includes a plurality of steel cutting elements that each projecting outwardly a distance therefrom. At least a portion of the cone comprises a wear resistant surface formed from a wear resistant composite material. The wear resistant composite material is made by the process of combining powders selected from the group consisting of carbides, borides, nitrides, carbonitrides, refractory metals, cermets, Co, Fe, Ni, steel, and combinations thereof, to form a material mixture. The material mixture is applied onto a designated surface of the cone, in one form or another, when the cone is in a pre-existing rigid state. Depending on the particular application, the material mixture can be applied in as a slurry to the designated surface of the cone to form a coating thereon. Alternatively, the material mixture can be preformed into a green part that is configured to be placed over the designated surface prior to being disposed thereon. The material mixture is then pressurized under conditions of elevated temperature to form the wear resistant surface. In the event that the material mixture is preformed into a green part, the preformed green part can be sintered prior to its placement on the designated cone surface. The sintered part can then be attached to the cone surface by brazing process.

    摘要翻译： 包括本发明的耐磨和抗断裂表面的岩石钻头包括具有从其延伸的至少一条腿的钢钻头体。 钢锥可旋转地设置在腿上。 钢锥体包括多个钢切割元件，每个钢切割元件向外突出一定距离。 锥体的至少一部分包括由耐磨复合材料形成的耐磨表面。 耐磨复合材料是通过将选自碳化物，硼化物，氮化物，碳氮化物，难熔金属，金属陶瓷，Co，Fe，Ni，钢及其组合的粉末组合的方法制成的，以形成材料混合物。 当锥体处于预先存在的刚性状态时，材料混合物以一种或另一种形式施加到锥体的指定表面上。 根据具体的应用，可以将材料混合物作为浆料施加到锥体的指定表面上以在其上形成涂层。 或者，材料混合物可以预成形为绿色部分，其被配置为在被放置在其上之前放置在指定表面上。 然后将材料混合物在高温条件下加压以形成耐磨表面。 在将材料混合物预成形为绿色部件的情况下，预成型的生坯部件可以在其放置在指定的锥形表面之前进行烧结。 然后可以通过钎焊工艺将烧结部件附着到锥体表面。

    Sharp gage for mill tooth rock bits
    93.
    发明授权
    Sharp gage for mill tooth rock bits 有权
    用于磨牙齿钻头的锋利量规

    公开(公告)号：US6435287B2

    公开(公告)日：2002-08-20

    申请号：US77388401

    申请日：2001-02-01

    申请人： ROCK BIT INTERNATIONAL INC

    发明人： ESTES ROY DEE

    IPC分类号： E21B10/50 ,  E21B10/58

    CPC分类号： E21B10/50 ,  E21B10/58

    摘要： A design for a gage tooth of the milled tooth variety is provided. The gage facing surface of each tooth is shaped so that only a narrow surface of each tooth contacts the borehole wall. Adjacent areas on each tooth slope away from the wall. The narrow gage facing surfaces, the sloping areas, and other areas are all covered with a suitable hard metal facing material.

    摘要翻译： 提供了铣牙牙齿牙齿的设计。 每个齿的面向面的表面被成形为使得每个齿的仅窄表面接触钻孔壁。 每个齿坡上的相邻区域远离墙壁。 面向表面的窄表面，倾斜区域和其他区域都被合适的硬质金属材料覆盖。

    Rotary cone drill bit with machined cutting structure and method
    94.
    发明授权
    Rotary cone drill bit with machined cutting structure and method 有权
    旋转锥钻头加工切割结构及方法

    公开(公告)号：US06415687B2

    公开(公告)日：2002-07-09

    申请号：US09776519

    申请日：2001-02-02

    申请人： William C. Saxman

    发明人： William C. Saxman

    IPC分类号： B21K504

    CPC分类号： E21B10/50 ,  E21B10/16

    摘要： A rotary cone drill bit is provided with at least one cutter cone assembly having a machined cutting structure which will maintain an effective cutting profile despite abrasion, erosion and/or wear of the associated cutting elements. The machined cutting structure may be formed on a generally cone shaped blank by a series of lathe turns and/or plunge cuts. The cutting elements may be formed with an aggressive cutting profile. For one application, the crest of each cutting element has the general configuration of an ogee curve. A layer of hardfacing material may be applied over all or selected portions of the machined cutting structure.

    摘要翻译： 旋转锥形钻头设置有至少一个切割锥形组件，其具有加工的切割结构，其将保持有效的切割轮廓，尽管相关切割元件的磨损，侵蚀和/或磨损。 加工的切割结构可以通过一系列车床转弯和/或切入刀形成在大致锥形的坯料上。 切割元件可以形成为具有侵蚀性的切割轮廓。 对于一个应用，每个切割元件的顶点具有奥格曲线的一般配置。 可以在加工的切割结构的所有或选择的部分上施加一层表面硬化材料。

    Hardfacing with multiple grade layers
    95.
    发明授权
    Hardfacing with multiple grade layers 有权
    多层次的表面硬化

    公开(公告)号：US06360832B1

    公开(公告)日：2002-03-26

    申请号：US09477029

    申请日：2000-01-03

    申请人： James L. Overstreet ,  Ronald L. Jones ,  Alan J. Massey ,  Mary K. Adams

    发明人： James L. Overstreet ,  Ronald L. Jones ,  Alan J. Massey ,  Mary K. Adams

    IPC分类号： E21B1008

    CPC分类号： E21B10/50 ,  C23C30/005

    摘要： An earth-boring bit has hardfacing that has multiple grades and an overlapped portion. One of the layers is of a different grade than the other so as to provide more wear resistance. The other provides more toughness than the wear resistant layer. The more wear resistant layer has a greater volumetric density of carbide particles. The greater density is primarily achieved by using a majority of the particles of smaller dimension than in the less wear resistant hardfacing. The overlapped portion may be on an outer or gage end of the outer row of teeth.

    摘要翻译： 一个钻孔钻头具有多个等级和重叠部分的硬面。 其中一层与另一层不同，以提供更多的耐磨性。 另一方面比耐磨层提供更多的韧性。 耐磨层越多，碳化物颗粒的体积密度越大。 较大的密度主要通过使用尺寸较小的大多数颗粒比较少的耐磨硬化面来实现。 重叠部分可以在外排齿的外侧或者规定端上。

    Wellbore milling method
    97.
    发明授权
    Wellbore milling method 失效
    井筒研磨法

    公开(公告)号：US6112812A

    公开(公告)日：2000-09-05

    申请号：US3207

    申请日：1998-01-06

    申请人： Thurman B. Carter

    发明人： Thurman B. Carter

    IPC分类号： E21B7/06 ,  E21B7/08 ,  E21B10/46 ,  E21B10/50 ,  E21B10/60 ,  E21B12/04 ,  E21B23/00 ,  E21B23/01 ,  E21B23/02 ,  E21B29/06 ,  E21B49/06

    CPC分类号： E21B17/1092 ,  E21B10/46 ,  E21B10/50 ,  E21B10/60 ,  E21B12/04 ,  E21B23/00 ,  E21B23/01 ,  E21B23/02 ,  E21B29/06 ,  E21B49/06 ,  E21B7/061

    摘要： A wellbore mill has been invented which has milling apparatus with a starting mill and a finishing mill, the starting mill having a central channel extending longitudinally therethrough, the central channel having an interior surface with carbide cutters thereon. A milling method has been invented for finishing a window in a casing in a wellbore, the window having been begun with a first mill, the method including inserting a second mill apparatus into the wellbore adjacent the window, the second mill apparatus having a milling system with a starting mill and a finishing mill, the starting mill having a central channel extending longitudinally therethrough, the central channel having an interior surface with carbide cutters thereon, rotating the second mill apparatus to finish the window. A two-trip milling operation has also been invented for milling a finished window in a casing in a cased wellbore, the wellbore having installed therein an anchoring-orientation device, the operation using the wellbore mill described above. In one aspect the mill(s) mill off high center producing a piece of casing which enters into the hollow portion of the mill(s).

    摘要翻译： 已经发明了一种具有起始磨机和精轧机的铣削装置的井眼磨机，该起动磨机具有纵向延伸通过的中心通道，该中心通道具有在其上的硬质合金刀具的内表面。 已经发明了一种用于在井眼中的壳体中完成窗户的铣削方法，该窗口已经开始于第一研磨机，该方法包括将第二研磨装置插入邻近窗口的井筒中，第二轧机设备具有铣削系统 起始磨机和精轧机，起始磨机具有纵向延伸通过的中心通道，中心通道具有内表面，其上具有硬质合金刀具，使第二轧机设备旋转以完成窗口。 还已经发明了一种二次铣削操作，用于在套管井筒中的壳体中铣削成品窗口，井筒中安装有锚定方向装置，该井的操作使用上述井筒磨机。 在一个方面，磨机从高中心磨下，产生进入研磨机的中空部分的一块套管。

    Rolling cutter bit with shear cutting gage
    98.
    发明授权
    Rolling cutter bit with shear cutting gage 失效
    滚动切割刀具剪切规格

    公开(公告)号：US6050354A

    公开(公告)日：2000-04-18

    申请号：US909974

    申请日：1997-08-12

    申请人： Rudolf Carl Otto Pessier ,  Danny Eugene Scott ,  Robert Earl Grimes

    发明人： Rudolf Carl Otto Pessier ,  Danny Eugene Scott ,  Robert Earl Grimes

    IPC分类号： E21B10/16 ,  E21B10/50 ,  E21B10/52 ,  E21B10/56 ,  E21B10/567 ,  E21B10/573 ,  E21B17/10 ,  E21B10/46

    CPC分类号： E21B10/567 ,  E21B10/16 ,  E21B10/50 ,  E21B10/52 ,  E21B10/5673 ,  E21B10/5735 ,  E21B17/1092

    摘要： An earth-boring bit of the rolling cutter variety is provided with hard gage inserts that protrude from the gage surface of the cutter to engage the side of the borehole for holding gage. The gage insert has a substantially flat face with sharp cutting edges formed thereon and has cutting surfaces that define a negative rake angle with respect to the sidewall of the borehole that is being sheared by the gage insert. The cutting surfaces are comprised of multiple chamfers. The face, cutting edge, and cutting surfaces of the gage insert are formed of a super-hard and abrasion-resistant material such as polycrystalline diamond or cubic boron nitride. The body of the insert is formed of a hard, fracture-tough material such as cemented tungsten carbide. The improved gage inserts provide an actively cutting gage surface that engages the sidewall of the borehole to promote shearing removal of the sidewall material. Such an improved gage insert provides an earth-boring bit with improved gage-holding ability, and improved steerability in directional drilling operations.

    摘要翻译： 轧制刀具的钻孔位置设置有从量规表面突出的硬量规插入件以与用于保持量具的钻孔侧接合。 量具插入件具有基本上平坦的表面，其上形成有锋利的切割边缘，并且具有切割表面，该切割表面相对于正在被计量插入件剪切的钻孔的侧壁限定负的前角。 切割表面由多个倒角组成。 量具插入件的表面，切削刃和切削表面由超硬耐磨材料形成，例如多晶金刚石或立方氮化硼。 插入物的主体由硬质的，断裂韧性的材料形成，如硬质合金碳化物。 改进的量规插入件提供与钻孔的侧壁接合的主动切割表面，以促进侧壁材料的剪切移除。 这种改进的量规插入件提供了具有改进的量具保持能力的钻孔钻头，并且在定向钻井操作中提高了可操纵性。

    Shielded cutterhead with small rolling disc cutters
    100.
    发明授权
    Shielded cutterhead with small rolling disc cutters 失效
    带小圆盘切割机的屏蔽刀头

    公开(公告)号：US5961185A

    公开(公告)日：1999-10-05

    申请号：US852003

    申请日：1997-05-06

    申请人： James E. Friant ,  Levent Ozdemir

    发明人： James E. Friant ,  Levent Ozdemir

    IPC分类号： E21B10/12 ,  E21B10/22 ,  E21B10/25 ,  E21B10/50 ,  E21B10/52 ,  E21D9/08 ,  E21D9/10

    CPC分类号： E21B10/25 ,  E21B10/12 ,  E21B10/22 ,  E21B10/50 ,  E21B10/52 ,  E21D9/087 ,  E21D9/104

    摘要： An improved disc type rolling rock cutter, and novel cutterheads employing such cutters. A rock cutter with an improved, simplified structure, with compact bearing, and smooth, rounded blade shape is disclosed. The design incorporates a cutter ring, bearing, and seal into a single cutter ring assembly. The cutter may be assembled and disassembled for rework by a single worker with simple hand tools. Replacement of worn out cutter rings is done quickly and easily by removing the old ring assembly and then sliding a new ring, bearing, and seal assembly on to the cutter shaft. This simplified assembly is achieved by using a comparatively large shaft which is normally in the range of 40-50% of the ring diameter. The shaft design is sufficiently robust to permit a cantilever mount of the cutter. The unique configuration allows 30,000 lbs. or more thrust to be applied to a 5 inch diameter miniature disc. This capacity permits single disc cutter technology to be applied to smaller bits or cutterheads than previously possible. Also, a unique method of shaping and installing hard metal inserts improves cutting efficiency over the life of the cutter, and increases wear life in highly abrasive conditions.

    摘要翻译： 一种改进的圆盘型滚动岩石切割机，以及采用这种切割机的新型刀头。 公开了具有改进的，简化的结构，紧凑的轴承和平滑的圆形刀片形状的岩石切割机。 该设计将切割环，轴承和密封件结合到单个切割器环组件中。 刀具可以通过简单的手动工具由单个工人组装和拆卸以进行返工。 通过拆卸旧的环组件，然后将新的环，轴承和密封组件滑动到切割轴上，可以快速方便地更换磨损的切割环。 这种简化的组装通过使用通常在环直径的40-50％的范围内的较大的轴来实现。 轴设计足够坚固以允许刀具的悬臂安装。 独特的配置允许30,000磅。 或更多的推力施加到5英寸直径的微型盘。 该容量允许将单盘切割器技术应用于比以前更小的位或刀头。 此外，成形和安装硬质金属镶嵌件的独特方法提高了刀具寿命的切割效率，并增加了高磨损条件下的磨损寿命。