APPARATUS AND METHOD FOR DOWNHOLE TRANSIENT RESISTIVITY MEASUREMENT AND INVERSION
    11.
    发明申请
    APPARATUS AND METHOD FOR DOWNHOLE TRANSIENT RESISTIVITY MEASUREMENT AND INVERSION 有权
    用于井下瞬态电阻测量和反演的装置和方法

    公开(公告)号:US20140136115A1

    公开(公告)日:2014-05-15

    申请号:US13903665

    申请日:2013-05-28

    IPC分类号: G01V3/28

    CPC分类号: G01V3/28

    摘要: A method of processing electromagnetic signal data includes: disposing a downhole tool in a borehole in an earth formation, the downhole tool including at least one electromagnetic transmitter; performing a downhole electromagnetic operation, the operation including transmitting an electromagnetic pulse from the transmitter into the formation and measuring a time domain transient electromagnetic (TEM) signal over a selected time interval following a transmitter turn-off time; transforming the measured time domain TEM signal into a frequency domain TEM signal measured; and applying an inversion technique to the transformed frequency domain TEM signal to estimate one or more formation parameters.

    摘要翻译: 一种处理电磁信号数据的方法包括:将井下工具设置在地层中的钻孔中,所述井下工具包括至少一个电磁发射器; 执行井下电磁操作,所述操作包括将电磁脉冲从发射机发射到地层中,并在发射机关闭时间之后的选定时间间隔内测量时域瞬态电磁(TEM)信号; 将测量的时域TEM信号转换成测量的频域TEM信号; 以及将逆反演技术应用于变换频域TEM信号以估计一个或多个地层参数。