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1.发明申请公开(公告)号：US20040251053A1
公开(公告)日：2004-12-16
申请号：US10853869
申请日：2004-05-26
IPC分类号： E21B010/00
摘要： A method for evaluating a cutting arrangement for a drill bit includes selecting a cutting element arrangement for the drill bit and calculating a score for the cutting arrangement. This method may be used to evaluate the cutting efficiency of various drill bit designs. In one example, this method is used to calculate a score for an arrangement based on a comparison of an expected bottomhole pattern for the arrangement with a preferred bottomhole pattern. The use of this method has lead to roller cone drill bit designs that exhibit reduce tracking over prior art bits.
摘要翻译： 用于评估钻头的切割装置的方法包括：选择用于钻头的切割元件布置并计算切割布置的得分。 该方法可用于评估各种钻头设计的切割效率。 在一个示例中，该方法用于基于用于布置的预期井底图案与优选底孔图案的比较来计算布置的得分。 这种方法的使用导致了滚筒锥钻钻头设计，显示出比现有技术钻头减少的跟踪。
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2.发明申请Force-balanced roller-cone bits, systems, drilling methods, and design methods 审中-公开力平衡辊锥钻头，系统，钻孔方法和设计方法公开(公告)号：US20040045742A1
公开(公告)日：2004-03-11
申请号：US10383805
申请日：2003-03-08
发明人： Shilin Chen
IPC分类号： E21B010/00
摘要： Roller cone drilling wherein the bit optimization process equalizes the downforce (axial force) for the cones (as nearly as possible, subject to other design constrain). Bit performance is significantly enhanced by equalizing downforce.
摘要翻译： 滚子锥钻，其中钻头优化过程使锥体的下压力（轴向力）平衡（尽可能接近其他设计约束）。 通过平衡下压力显着增强了位性能。
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公开(公告)号：US20030141114A1
公开(公告)日：2003-07-31
申请号：US10058389
申请日：2002-01-30
IPC分类号： E21B010/00
摘要： A drill bit for trenchless drilling includes a bit body defining a longitudinal axis about which the drill bit is rotated during a trenchless drilling operation. Two sets of cutting teeth are mounted at a front end of the bit body, the sets disposed on opposite sides of the axis. The first and second sets are brazed into respective slots formed in the first and second side surfaces of the bit body. The slots on each side surface communicate with a common groove, wherein the groove forms a shoulder against which rear ends of the cutting teeth abut.
摘要翻译： 用于无沟槽钻孔的钻头包括限定纵向轴线的钻头，钻头在无开挖钻孔操作期间围绕该纵向轴线旋转。 两组切割齿安装在钻头体的前端，该组位于轴的相对侧。 第一组和第二组钎焊到形成在钻头体的第一和第二侧表面中的相应的槽中。 每个侧表面上的槽与公共凹槽连通，其中凹槽形成肩部，切割齿的后端抵靠在其上。
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4.发明申请公开(公告)号：US20010030067A1
公开(公告)日：2001-10-18
申请号：US09800242
申请日：2001-03-06
IPC分类号： E21B010/00
CPC分类号： E21B10/567 , E21B10/46 , E21B17/1092 , Y10S76/12 , Y10T29/49885 , Y10T156/1089
摘要： A method is disclosed comprising the steps of locating, on a surface of a downhole component, a plurality of thermally stable polycrystalline diamond (TSP) bearing elements, and then applying to the surface a settable facing material which bonds to the surface between the bearing elements and embraces the elements to hold them in place. A method in which bearing elements each comprising a body of TSP at least partly surrounded by a layer of less hard material are secured to the surface by welding or brazing part of the surface of each bearing element which comprises said less hard material to said component is also described.
摘要翻译： 公开了一种方法，其包括以下步骤：在井下部件的表面上定位多个热稳定的多晶金刚石（TSP）承载元件，然后向表面施加可固定的面向材料，该可固定的面向材料结合到轴承元件 并拥抱这些元素来保持它们。 一种方法，其中每个包括至少部分由较硬硬质材料层包围的TSP体的承载元件通过将包含所述较不硬的材料的每个轴承元件的表面的一部分焊接或钎焊到所述部件而固定到所述表面上， 也描述。
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公开(公告)号：US20040165801A1
公开(公告)日：2004-08-26
申请号：US10784459
申请日：2004-02-23
IPC分类号： E21B010/00 , F16C043/00
CPC分类号： B60B27/001 , B23P11/005 , B60B35/18 , B60B2310/208 , B60B2310/228 , B60B2310/306 , B60B2310/316 , B60B2360/10 , B60B2360/102 , B60B2380/14 , F16C19/386 , F16C35/063 , F16C2326/02 , Y10T29/49533 , Y10T29/49535 , Y10T29/49536 , Y10T29/49682 , Y10T29/49696 , Y10T29/49776 , Y10T29/49918 , Y10T29/53065 , Y10T29/53104
摘要： A hub (2) includes a spindle (14) which projects through a housing (4) and rotates relative to the housing (4) on a bearing (6) that is located between the spindle (14) and the housing (4). The bearing (6) has two sets of raceways (28,40) that are oblique to the axis x, and in addition rolling elements (36) arranged in two rows between the sets of raceways (28,40). The inner raceways (28) that fit around the spindle (14) and have back faces (32), with the back face (32) for one of the races (26) being against a shoulder (18) from which the spindle (14) projects. Initially, the end of the spindle (14) projects straight beyond the back face (32) of the outer racenullindeed, so that the races (26) can be installed over the spindle (14). But once the housing (4) and races (26) are in a position around the spindle (14), the projecting end portion of the spindle (14) is deformed radially and axially in a rotary forming operation such that it transforms into a formed end (20) that lies behind back face (32) of the race (26). With the two races (26) between the formed end (20) and the shoulder (18). During the rotary forming operation the hub (26) rotates, and the end of its spindle (14) is forced against a rotating forming tool and the force is monitored. The housing (4) is restrained and the torque transferred from the rotating hub (2) to the housing (4) is monitored.
摘要翻译： 轮毂（2）包括主轴（14），该主轴突出通过壳体（4）并且相对于壳体（4）在位于主轴（14）和壳体（4）之间的轴承（6）上旋转。 轴承（6）具有与轴线x倾斜的两组滚道（28,40），以及在滚道组（28,40）之间布置成两排的滚动元件（36）。 安装在主轴（14）周围并且具有后表面（32）的内滚道（28），其中一个座圈（26）的后表面（32）抵靠在肩部（18）上，主轴 ）项目。 最初，主轴（14）的端部直接突出超过外圈的背面（32），实际上，使得座圈（26）可以安装在主轴（14）上。 但是，一旦壳体（4）和座圈（26）处于围绕心轴（14）的位置，则主轴（14）的突出端部在旋转成形操作中径向和轴向地变形，使得其转变成形成 端部（20）位于座圈（26）的背面（32）之后。 通过形成的端部（20）和肩部（18）之间的两个座圈（26）。 在旋转成形操作期间，毂（26）旋转，并且其主轴（14）的端部被迫抵抗旋转成形工具，并且该力被监测。 对壳体（4）进行限制，并且监测从旋转轮毂（2）传递到壳体（4）的扭矩。
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公开(公告)号：US20040159469A1
公开(公告)日：2004-08-19
申请号：US10369000
申请日：2003-02-19
IPC分类号： E21B010/00
CPC分类号： E21B10/52
摘要： An earth-boring bit has a bit body, at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body, and a cutter mounted for rotation on the bearing shaft. The cutter includes a plurality of teeth that are covered with a hardfacing layer. At least some of the teeth have a leading side that has a streamlined contour. The streamlined contour is generally conical in some of the embodiments. In others, the streamlined contour is defined by a corner between diverging inner and outer sections of the leading side.
摘要翻译： 钻头具有一个位体，至少一个从钻头体向内和向下悬伸的悬臂轴承轴，以及安装成用于在轴承轴上旋转的切割器。 切割器包括被表面堆积层覆盖的多个齿。 至少一些牙齿具有具有流线型轮廓的前方。 在一些实施例中，流线型轮廓通常是圆锥形的。 在其他方面，流线型的轮廓由前方的内部和外部分段之间的角度限定。
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公开(公告)号：US20040149494A1
公开(公告)日：2004-08-05
申请号：US10356381
申请日：2003-01-31
IPC分类号： E21B010/00
CPC分类号： C22C38/04 , C22C38/02 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , E21B10/00 , E21B10/42 , E21B10/55
摘要： Drill bit reinforcing members or blanks of this invention are formed from high-strength steels having a carbon content less than about 0.3 percent by weight, a yield strength of at least 55,000 psi, a tensile strength of at least 80,000 psi, a toughness of at least 40 CVN-L, Ft-lb, and a rate of expansion percentage change less than about 0.0025%/null F. during austenitic to ferritic phase transformation. In one embodiment, such steel comprises in the range of from about 0.1 to 0.3 percent by weight carbon, 0.5 to 1.5 percent by weight manganese, up to about 0.8 percent by weight chromium, 0.05 to 4 percent by weight nickel, and 0.02 to 0.8 percent by weight molybdenum. In another example, such steel comprises in the range of from about 0.1 to 0.3 percent by weight carbon, 0.9 to 1.5 percent by weight manganese, 0.1 to 0.5 percent by weight silicon, and one or more microalloying element selected from the group consisting of vanadium, niobium, titanium, zirconium, aluminum and mixtures thereof.
摘要翻译： 本发明的钻头加强构件或坯料由碳含量小于约0.3重量％，屈服强度至少为55,000psi，抗拉强度至少为80,000psi的高强度钢形成， 在奥氏体相对铁素体相变期间，至少40CVN-L，Ft-lb，膨胀率变化率小于约0.0025％/°F。 在一个实施方案中，这种钢包含约0.1至0.3重量％的碳，0.5至1.5重量％的锰，至多约0.8重量％的铬，0.05至4重量％的镍和0.02至0.8 钼重量百分比。 在另一个实例中，这种钢包含约0.1至0.3重量％的碳，0.9至1.5重量％的锰，0.1至0.5重量％的硅和一种或多种选自钒的微合金元素 ，铌，钛，锆，铝及其混合物。
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公开(公告)号：US20040140127A1
公开(公告)日：2004-07-22
申请号：US10699255
申请日：2003-10-31
发明人： Martin Goedickemeier
IPC分类号： E21B010/00
摘要： A sharpening method and associated sharpening means (1) for a drilling tool (2), which is set with grinding segments (3) comprised of hard material. The sharpening means (1) is filled with abrasive materials (6) and is chordlike.
摘要翻译： 一种用于钻具（2）的磨削方法和相关的磨削装置（1），其设置有由硬质材料构成的研磨段（3）。 磨削装置（1）填充有研磨材料（6）并且是弦状的。
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9.发明申请公开(公告)号：US20040069539A1
公开(公告)日：2004-04-15
申请号：US10405576
申请日：2003-04-01
发明人： Eric Charles Sullivan , Theodore Edward Zaleski JR. , Scott Ray Schmidt , Don Quy Nguyen , Glenn R. Zadrapa , Timothy K. Marvel , Daniel E. Ruff
IPC分类号： E21B010/00
CPC分类号： E21B10/08 , E21B10/22 , E21B10/24 , E21B12/02 , E21B44/005 , E21B47/01 , E21B47/011 , E21B47/091 , E21B47/12 , E21B47/124
摘要： An improved drill bit for use in drilling operations in a wellbore comprising a bit body including a plurality of bit legs, each supporting a rolling cone cutter, a coupling member formed at an upper shank portion of said bit body, at least one sensor for monitoring at least one condition of said improved drill bit during drilling operations, and an electronics bay portion defined in-part by said upper shank portion of said bit body for housing at least one monitoring circuit.
摘要翻译： 一种用于井筒钻井操作的改进的钻头，包括：钻头体，其包括多个钻头支脚，每个钻头支撑滚动锥切割器;形成在所述钻头体的上部柄部的联接构件，至少一个用于监测的传感器 在钻孔操作期间所述改进的钻头的至少一个条件以及由所述钻头体的所述上部柄部分部分地限定的用于容纳至少一个监控回路的电子部分部分。
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10.发明申请Steerable horizontal subterranean drill bit having elevated wear protector receptacles 失效可操纵的水平地下钻头具有高架的磨损保护器插座公开(公告)号：US20030150652A1
公开(公告)日：2003-08-14
申请号：US10209365
申请日：2002-07-31
发明人： John B. Sved
IPC分类号： E21B010/00 , E21B010/62
CPC分类号： E21B7/064
摘要： A steerable horizontal subterranean drill bit apparatus is disclosed. The apparatus may include a drill bit and a housing. The drill bit may include elevated wear protector receptacles in particular locations and configurations.
摘要翻译： 公开了一种可操纵的水平地下钻头装置。 该装置可以包括钻头和壳体。 钻头可以包括在特定位置和构造中的升高的磨损保护器插座。
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