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    • 38. 发明授权
    • Two way check shot and reverse VSP while drilling
    • 双向检查和反向VSP钻孔
    • US08009510B2
    • 2011-08-30
    • US12256860
    • 2008-10-23
    • Chung Chang
    • Chung Chang
    • G01V1/42E21B47/00
    • G01V1/42
    • Methods and related systems are described making seismic measurements. Seismic energy is transmitted into the earth using a surface seismic source. The seismic energy is received with one or more downhole receivers located in a borehole. In response to the received seismic energy from the surface seismic source, seismic energy is transmitted into the earth using a downhole seismic source. The seismic energy from the downhole seismic source is then received with one or more surface receivers located on the surface of the earth. A delay interval is measured downhole between the first arrival of the seismic energy from the surface seismic source and the transmission from the downhole seismic source. A surface interval is measured between the transmitting of seismic energy from the surface seismic source and first arrival of the seismic energy from the downhole seismic source using the one or more surface receivers. Travel time can be calculated by subtracting the delay interval from the surface interval.
    • 描述了进行地震测量的方法和相关系统。 地震能量使用地震震源传播到地球上。 地震能量被位于钻孔中的一个或多个井下接收器接收。 响应于从地震震源获得的地震能量,地震能量使用井下地震源传输到地球中。 然后,来自井下地震源的地震能量被位于地球表面上的一个或多个地面接收器接收。 在来自地表震源的地震能量的首次到达与来自井下地震源的传输之间,井下测量延迟间隔。 在使用一个或多个表面接收器之间,从表面地震源发射地震能量和来自井下地震源的地震能量的首次到达之间测量表面间隔。 可以通过从表面间隔中减去延迟间隔来计算行程时间。
    • 40. 发明申请
    • HEADREST-MOUNTED MONITOR
    • 主要安装监控
    • US20080067842A1
    • 2008-03-20
    • US11777936
    • 2007-07-13
    • Chung Chang
    • Chung Chang
    • A47C7/72
    • A monitor adapted for mounting in an automobile headrest is provided. A screen structure of the monitor is pivotable about an upper edge thereof, such that the monitor occupies little volume within the headrest. A viewing angle of the screen structure is independently adjustable by a viewer, such that the viewer can continuously select the optimum viewing angle with changing conditions inside the automobile. The screen structure automatically retracts into a housing when struck. Thus, the monitor poses little risk of injury to passengers. The housing of the monitor is attachable to the headrest with screws, which provides a very sturdy connection and reduces the chances of the housing becoming detached from the headrest during a vehicle collision. The hinged connection between the screen structure and the housing is preferably constructed of interconnected components made from sturdy materials, such as metals. Hinge components are optionally secured with metal fastening members and fastening apertures made of metal and strong plastics. The hinges are thus unlikely to break during a vehicle collision.
    • 提供适于安装在汽车头枕中的监视器。 监视器的屏幕结构可围绕其上边缘枢转,使得监视器在头枕内占据很小的体积。 屏幕结构的视角可由观看者独立调节,使得观看者可以随着汽车内部的变化条件连续地选择最佳视角。 当打击时,屏幕结构自动缩回到外壳中。 因此,监视器对乘客的伤害很小。 显示器的外壳可以用螺钉固定到头枕上,这提供了非常坚固的连接,并且减少了在车辆碰撞期间壳体与头枕分离的机会。 筛网结构和壳体之间的铰接连接件优选由由诸如金属的坚固材料制成的互连部件构成。 铰链部件可选地用金属紧固件和由金属和强塑料制成的紧固孔固定。 因此铰链在车辆碰撞期间不太可能破裂。