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    • 1. 发明授权
    • Casing drilling connector with low stress flex groove
    • 带低应力挠性槽的套管钻孔连接器
    • US06406070B1
    • 2002-06-18
    • US09706204
    • 2000-11-03
    • Richard W. DeLangeEd EvansRichard Griffin
    • Richard W. DeLangeEd EvansRichard Griffin
    • F16L2500
    • E21B17/042
    • An oilfield tubular string 10, 60, 60A comprising a plurality of elongate joints having one or both ends threaded. The joints may be connected by a coupling including a generally sleeve shaped coupling body having a tapered upstream thread profile and a tapered downstream thread profile for threaded engagement with a mating profile of a respective joint. The coupling body includes a low stress flex groove 30 having a selected box thread runout bevel angle, and all transitions in the flex groove between surfaces are radiused to greater than 0.100 inches to minimize stress risers. A pin-in-box connection between tubular joints includes mating tapered threads 72, engagement of end shoulder 74, 76, 78, and 80, and a low stress flex groove 82. The present invention allows the elongate joints to be used as both a casing string and a drill string, thereby saving significant time and expense.
    • 一种油田管状管10,60,60A,包括多个具有一端或两端螺纹的细长接头。 接头可以通过联接器连接,该联接器包括具有锥形上游螺纹轮廓的大致套筒形联接体和用于与相应接头的配合轮廓螺纹接合的锥形下游螺纹轮廓。 联接体包括具有选定的箱形螺纹跳动斜角的低应力弯曲凹槽30,并且表面之间的弯曲凹槽中的所有转变都被圆角大于0.100英寸,以使应力梯度最小化。 管状接头之间的管脚连接包括配合的锥形螺纹72,端部肩部74,76,78和80的接合以及低应力弯曲凹槽82.本发明允许细长接头用作两个 套管柱和钻柱,从而节省了大量的时间和费用。
    • 3. 发明授权
    • Apparatus and method for verifying a multi-component electronic design
    • 用于验证多组分电子设计的装置和方法
    • US06279146B1
    • 2001-08-21
    • US09336485
    • 1999-06-18
    • Ed EvansDave Jurasek
    • Ed EvansDave Jurasek
    • G06F1750
    • G06F17/5022G06F17/5027
    • A verification engine for verifying the design of a target system having a plurality of components interconnected by a plurality of target system buses is disclosed. The verification engine comprises a first hardware model and a second hardware model, both configured as a component and having a set of hardware model input/output pins. In addition, a first bus wrapper is connected to the first hardware model and a second bus wrapper is connected to the second hardware model. Further, a set of bus lines are each connected to the first bus wrapper and the second bus wrapper. Each bus wrapper also has switchable communicative circuitry that switchably communicatively connects each hardware model input/output pin to a bus line and has a control block controlling the switchable communicative circuitry. A system controller is connected to at least some of the bus lines and is adapted to transmit a sequence of time synchronization information to each bus wrapper control block by way of the bus lines. Finally, responsive to a predetermined one of the time slot numbers both of the control blocks switch at least one input/output pin into communicative contact with a the bus line so that at least one input/output line from the first hardware model is connected to an input/output line of the second hardware model.
    • 公开了一种用于验证具有由多个目标系统总线互连的多个部件的目标系统的设计的验证引擎。 验证引擎包括第一硬件模型和第二硬件模型,其被配置为组件并且具有一组硬件模型输入/输出引脚。 此外,第一总线封装件连接到第一硬件模型,并且第二总线封装件连接到第二硬件模型。 此外,一组总线线路分别连接到第一总线封装件和第二总线封装件。 每个总线封装器还具有可切换的通信电路,其可切换地将每个硬件模型输入/输出引脚连接到总线,并且具有控制可切换通信电路的控制块。 系统控制器连接到至少一些总线线路,并且适于通过总线线路向每个总线封装器控制块发送一系列时间同步信息。 最后,响应于预定的一个时隙号,两个控制块将至少一个输入/输出引脚切换成与总线通信的接触,使得来自第一硬件模型的至少一个输入/输出线连接到 第二硬件模型的输入/输出线。
    • 4. 发明授权
    • Threaded connection for enhanced fatigue resistance
    • 螺纹连接,增强耐疲劳性
    • US5931511A
    • 1999-08-03
    • US850735
    • 1997-05-02
    • Richard DeLangeEd EvansJerry L. Buster
    • Richard DeLangeEd EvansJerry L. Buster
    • E21B17/042E21B17/08F16L15/04F16L15/06F16L15/00
    • F16L15/004E21B17/042E21B17/08F16L15/003F16L15/04
    • A threaded connection for improving fatigue resistance to cyclic loading is disclosed. The threaded connection basically comprises a pair of interlocking members having corresponding radially inner and radially outer spiral threads thereon, each spiral thread including a spiral compression flank and a spiral tension flank wherein at least one of the spiral compression flanks and spiral tension flanks on the inner spiral threads are in mating planar engagement with a corresponding spiral compression flank and spiral tension flank on the outer spiral thread. Axial spacing between the tension flanks and the compression flanks on the radially inner and radially outer spiral threads further define a stress reducing spiral root surface on at least one of the radially inner and radially outer threads and a corresponding crest surface on the other radially inner and radially outer spiral threads. Resistance to cyclic loading on the threaded connection is improved because of the stress reducing spiral root surface which includes a substantially linear profile spaced axially between the compression flank of one thread and a tension flank of an adjoining thread. The stress reducing spiral root surface intersects the compression flank and tension flank along corresponding first and second axially spaced rounded surfaces each having a radius of at least 0.015 inches. Loading is therefore, distributed evenly over the threads rather than being concentrated at what normally would be a sharp juncture formed in the root of the thread.
    • 公开了一种用于改善对循环加载的耐疲劳性的螺纹连接。 螺纹连接基本上包括一对在其上具有对应的径向内部和径向外部螺旋螺纹的互锁构件,每个螺旋螺纹包括螺旋压缩侧面和螺旋张力侧面,其中螺旋压缩侧面和螺旋张力中的至少一个在内侧 螺旋螺纹与外螺旋螺纹上的相应的螺旋压缩侧面和螺旋张力侧面配合平面接合。 在径向内部和径向外部螺旋形螺纹之间的张力侧翼和压缩侧面之间的轴向间隔进一步限定在径向内部和径向外部螺纹中的至少一个上的应力减小的螺旋根表面和在另一个径向外部螺纹上的相应的顶部表面 径向外螺旋线。 由于应力减小的螺旋根表面,包括在一个螺纹的压缩侧面和相邻螺纹的张力侧面之间轴向间隔开的基本上线性的轮廓,因此提高了螺纹连接上的循环负载的耐受性。 应力减小螺旋根表面与相应的第一和第二轴向间隔开的圆形表面相交于压缩侧面和张力侧面,每个圆形表面的半径至少为0.015英寸。 因此,装载是均匀分布在螺纹上,而不是集中在通常在螺纹根部形成的尖锐的接头处。