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    • 12. 发明授权
    • Determining the order of devices in a downhole string
    • 确定井下字符串中设备的顺序
    • US09068442B2
    • 2015-06-30
    • US13265975
    • 2010-05-13
    • Christopher GollaLaban Marsh
    • Christopher GollaLaban Marsh
    • E21B47/16E21B47/12H04L12/10
    • E21B47/12E21B47/09H04L12/10
    • A string of subs includes a controller sub. The controller sub includes a first end, a second end, a controller, a first controller bus coupled to the controller, the first controller bus exiting at the first end of the controller sub, and a second controller bus coupled to the controller, the second controller bus being separate from the first controller bus, the second controller bus exiting at the second end of the controller sub. The string of subs also includes a first measuring sub and a second measuring sub. A process, running on a computer, discovers that the first measuring sub is connected to the first controller bus, discovers that the second measuring sub is connected to the first controller bus, determines that the first measuring sub is physically closer to the controller sub than the second measuring sub, and use the fact that the first measuring sub is physically closer to the controller sub than the second measuring sub in controlling the operation of the string of subs.
    • 一串子包含一个控制器子。 控制器子包括耦合到控制器的第一端,第二端,控制器,第一控制器总线,在控制器子级的第一端处退出的第一控制器总线和耦合到控制器的第二控制器总线,第二控制器总线 控制器总线与第一控制器总线分离,第二控制器总线在控制器副的第二端处退出。 子串还包括第一测量子和第二测量子。 在计算机上运行的过程,发现第一测量子连接到第一控制器总线,发现第二测量子连接到第一控制器总线,确定第一测量子在物理上更靠近控制器子,比 第二测量子,并且在控制子串的操作中使用第一测量子在物理上更靠近控制器子的事实,而不是第二测量子。
    • 13. 发明申请
    • CORRECTING FOR MAGNETIC INTERFERENCE IN AZIMUTHAL TOOL MEASUREMENTS
    • 校正AZIMUTHAL工具测量中的磁性干扰
    • US20120001637A1
    • 2012-01-05
    • US13175514
    • 2011-07-01
    • Michael S. BittarHsu-Hsiang WuChristopher Golla
    • Michael S. BittarHsu-Hsiang WuChristopher Golla
    • G01V3/00
    • G01V3/28
    • Methods and systems that compensate for magnetic interference in azimuthal tool measurements. At least some method embodiments include a downhole logging method that includes taking measurements as a function of orientation from inside a borehole. The measurements are associated with different azimuthal bins, and an azimuthal direction is determined for each azimuthal bin. Because the tool rotates at a constant rate, the relative number of measurements associated which the different bins can be used to measure the effective sizes of the different bins and to redetermine the effective angles of the bins in the presence of magnetic interference. The tool measurements may include, but are not limited to, formation resistivity, magnetic field, and formation density.
    • 补偿方位角刀具测量中的磁干扰的方法和系统。 至少一些方法实施例包括井下测井方法,其包括从钻孔内部取测量作为取向的函数。 测量与不同的方位箱相关联,并且为每个方位箱确定方位角方向。 由于工具以恒定的速率旋转,所以与不同的箱体相关联的测量的相对数量可用于测量不同箱体的有效尺寸,并在存在磁性干扰的情况下重新确定箱体的有效角度。 工具测量可以包括但不限于地层电阻率,磁场和地层密度。