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9 条记录 (耗时 0.116 秒)

    Drill string shutoff valve
    5.
    发明授权
    Drill string shutoff valve 有权
    钻柱截止阀

    公开(公告)号：US07090033B2

    公开(公告)日：2006-08-15

    申请号：US10677917

    申请日：2003-10-02

    申请人： Kwong-Onn C. Chan ,  Behrooz Movaffagh ,  Xiaoping He

    发明人： Kwong-Onn C. Chan ,  Behrooz Movaffagh ,  Xiaoping He

    IPC分类号： E21B21/08

    CPC分类号： E21B17/07 ,  E21B17/18 ,  E21B23/004 ,  E21B34/12

    摘要： A valve assembly connects into a drill string for opening and closing at least one inner passage within the drill string of the drill string. The valve assembly includes an annular valve assembly carried in an annular passage that moves between the open and closed positions in response to downward fluid pressure from the surface through the annular passage. The valve assembly also includes an inner valve assembly carried in an inner passage of the drill string. The inner valve assembly is a two-way valve that is actuated between open and closed positions by pressure pulses from the surface through the inner passage. The valve assembly can be used within coiled tubing.

    摘要翻译： 阀组件连接到钻柱中，用于打开和关闭钻柱的钻柱内的至少一个内通道。 阀组件包括环形阀组件，该环形阀组件承载在环形通道中，响应于来自表面的向下的流体压力通过环形通道而在打开位置和关闭位置之间移动。 阀组件还包括承载在钻柱的内通道中的内阀组件。 内部阀组件是通过从表面到内部通道的压力脉冲在打开和关闭位置之间致动的双向阀。 阀组件可用于连续油管内。

    Drill string shutoff valve
    6.
    发明授权
    Drill string shutoff valve 有权
    钻柱截止阀

    公开(公告)号：US07017682B2

    公开(公告)日：2006-03-28

    申请号：US10677871

    申请日：2003-10-02

    申请人： Kwong-Onn C. Chan ,  Behrooz Movaffagh ,  Xiaoping He ,  Loren Pierre Boisvert

    发明人： Kwong-Onn C. Chan ,  Behrooz Movaffagh ,  Xiaoping He ,  Loren Pierre Boisvert

    IPC分类号： E21B17/18

    CPC分类号： E21B17/07 ,  E21B17/18 ,  E21B34/12

    摘要： A valve assembly connects into a drill string for opening and closing a passage within the drill string. The valve assembly has an inner valve member for opening and closing an inner passage of the drill string. The valve member moves between the open and closed positions in response to axial movement of the drill string. Lifting the drill string causes the upper portion to move upward relative to the lower portion, bringing along with it the valve member, while the valve sleeve remains stationary with the lower portion, opening the valve. The valve assembly can include an annular valve assembly for opening and closing an annular passage located around the inner passage. The annular valve assembly is opened and closed by increasing the pressure in the annular passage above the annular valve assembly.

    摘要翻译： 阀组件连接到用于打开和关闭钻柱内的通道的钻柱。 阀组件具有用于打开和关闭钻柱的内部通道的内部阀构件。 阀构件响应于钻柱的轴向运动而在打开位置和闭合位置之间移动。 抬起钻柱使得上部相对于下部向上移动，与阀构件一起，同时阀套与下部保持静止，打开阀。 阀组件可以包括用于打开和关闭位于内部通道周围的环形通道的环形阀组件。 环形阀组件通过增加环形阀组件上方的环形通道中的压力来打开和关闭。

    Paging reception assurance in a multiply registered wireless transceiver
    7.
    发明授权
    Paging reception assurance in a multiply registered wireless transceiver 失效
    在多重注册的无线收发器中寻呼接收保证

    公开(公告)号：US06282178B1

    公开(公告)日：2001-08-28

    申请号：US09115101

    申请日：1998-07-13

    申请人： Anthony Noerpel ,  Xiaoping He

    发明人： Anthony Noerpel ,  Xiaoping He

    IPC分类号： A63B6700

    CPC分类号： H04B7/2125 ,  H04B7/18517 ,  H04B7/18539 ,  H04B7/18543 ,  H04B7/18558 ,  H04B7/18567 ,  H04B7/18571 ,  H04B7/1858 ,  H04B7/18582 ,  H04B7/19 ,  H04B7/2041 ,  H04W28/14 ,  H04W52/0203 ,  H04W52/0216 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/00 ,  H04W76/10 ,  H04W76/25 ,  H04W80/00 ,  H04W84/06 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/20 ,  Y02D70/446

    摘要： An approach for selecting an asynchronous paging interval involves selecting a set of possible paging schemes for one wireless system; selecting a paging interval for another wireless system that is asynchronous with the paging schemes selected for the one wireless system; determining, after some number of paging repetitions, the probability of collision between a first paging channel in the one wireless system, and a second paging channel in the other wireless system; reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until after some number of page repetitions, the probability reaches a prescribed minimum; and reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until the number of paging repetitions needed to reach the prescribed minimum is reaches a selected minimum.

    摘要翻译： 用于选择异步寻呼间隔的方法涉及为一个无线系统选择一组可能的寻呼方案; 为与所述一个无线系统选择的寻呼方案异步的另一无线系统选择寻呼间隔; 在一些无线系统中的第一寻呼信道与另一个无线系统中的第二寻呼信道之间确定一些寻呼重复次数之间的冲突概率; 重新选择其他无线系统的寻呼间隔，与为一个无线系统选择的寻呼方案异步，并重复确定概率，直到几页重复之后，概率达到规定的最小值; 并重新选择另一无线系统的寻呼间隔，与为一个无线系统选择的寻呼方案异步，并重复确定概率，直到达到规定最小值所需的寻呼重复次数达到所选择的最小值。

    System and method for providing contention channel organization for broadband satellite access in a communications network
    8.
    发明授权
    System and method for providing contention channel organization for broadband satellite access in a communications network 有权
    在通信网络中为宽带卫星接入提供竞争信道组织的系统和方法

    公开(公告)号：US06980800B2

    公开(公告)日：2005-12-27

    申请号：US10074759

    申请日：2002-02-12

    申请人： Anthony Noerpel ,  Channasandra Ravishankar ,  Xiaoping He ,  Abheek Saha

    发明人： Anthony Noerpel ,  Channasandra Ravishankar ,  Xiaoping He ,  Abheek Saha

    IPC分类号： H04W74/08 ,  H04Q7/20 ,  H04B7/212

    CPC分类号： H04W74/0833

    摘要： Two types of contention channels are used to accommodate broadband packet data in a satellite communication network. A first contention channel is used by unsynchronized user terminals to access the system and request a traffic channel. The first contention channel is of a sufficient duration to accommodate a RACH message, as well as the timing uncertainty between user terminals within a given spot beam. A second contention channel is shorter in duration than the first contention channel, and is narrowband, so that more than one second contention channel may be transmitted within the bandwidth of the broadband traffic channels. The second contention channels are used by synchronized user terminals for transmitting packet RACH, or PRACH, messages. The more efficient nature of the PRACH channels accommodates the increased overhead associated with bursty packet data, without the capacity cost of the longer duration RACH channel.

    摘要翻译： 两种类型的竞争通道用于在卫星通信网络中容纳宽带分组数据。 不同步的用户终端使用第一争用通道访问系统并请求业务信道。 第一争用信道具有足够的持续时间以适应RACH消息，以及在给定点波束内的用户终端之间的定时不确定性。 第二争用信道的持续时间比第一竞争信道短，并且是窄带，使得可以在宽带业务信道的带宽内传输多于一个的第二争用信道。 第二争用信道由同步用户终端用于发送分组RACH或PRACH消息。 PRACH信道的更高效的性质适应与突发分组数据相关联的增加的开销，而不需要较长持续时间的RACH信道的容量成本。