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    • 5. 发明授权
    • Methods and apparatus to calculate a distance from a borehole to a boundary of an anisotropic subterranean rock layer
    • 计算各向异性地下岩层从钻孔到边界的距离的方法和装置
    • US08913460B2
    • 2014-12-16
    • US13587931
    • 2012-08-17
    • Vivian PistreJakob Brandt Utne Haldorsen
    • Vivian PistreJakob Brandt Utne Haldorsen
    • G01V1/28G01V1/50
    • G01V1/50
    • A disclosed example method includes providing, in a borehole, a transmitter (Tx) and receivers (Rxs) spaced linearly from Tx at known distances, measuring linear propagation times (LPts) for a signal to propagate from Tx to each of Rxs, determining an inline velocity (VINL) based on LPts, measuring reflection times (Rts) for a signal to propagate from Tx to each of the Rxs via a boundary, for each of Rts, providing a time-distance anisotropic velocity (TDAV) relationship depending on an effective signal velocity (ESV) in an anisotropic formation adjacent the boundary as a function of reflection angle for the reflection time signal to the boundary, VINL and orthogonal velocity, performing semblance processing to combine the TDAV relationships with VINL for a best-fit calculation of the ESVs for the different reflection angles of the reflection time signals, and calculating a distance for the corresponding receiver to the boundary on the calculation.
    • 所公开的示例性方法包括在钻孔中提供在已知距离处与Tx线性间隔的发射机(Tx)和接收机(Rx),测量从Tx传播到每个Rx的信号的线性传播时间(LPts),确定 基于LPts的内联速度(VINL),测量每个Rts的信号经由边界从Tx向Tx传播到每个Rx的反射时间(Rts),从而提供时间各向异性速度(TDAV)关系,取决于 邻近边界的各向异性地层中的有效信号速度(ESV)作为反射时间信号到边界的反射角的函数,VINL和正交速度,执行相似性处理以将TDAV关系与VINL组合以便最佳拟合计算 用于反射时间信号的不同反射角的ESV,并且在计算时计算相应的接收器到边界的距离。
    • 6. 发明申请
    • Methods and Apparatus to Calculate A Distance from A Borehole to A Boundary of An Anisotropic Subterranean Rock Layer
    • 计算从井眼到各向异性地下岩层边界的距离的方法和装置
    • US20120307592A1
    • 2012-12-06
    • US13587931
    • 2012-08-17
    • Vivian PistreJakob Brandt Utne Haldorsen
    • Vivian PistreJakob Brandt Utne Haldorsen
    • G01V1/28
    • G01V1/50
    • A disclosed example method includes providing, in a borehole, a transmitter (Tx) and receivers (Rxs) spaced linearly from Tx at known distances, measuring linear propagation times (LPts) for a signal to propagate from Tx to each of Rxs, determining an inline velocity (VINL) based on LPts, measuring reflection times (Rts) for a signal to propagate from Tx to each of the Rxs via a boundary, for each of Rts, providing a time-distance anisotropic velocity (TDAV) relationship depending on an effective signal velocity (ESV) in an anisotropic formation adjacent the boundary as a function of reflection angle for the reflection time signal to the boundary, VINL and orthogonal velocity, performing semblance processing to combine the TDAV relationships with VINL for a best-fit calculation of the ESVs for the different reflection angles of the reflection time signals, and calculating a distance for the corresponding receiver to the boundary on the calculation.
    • 所公开的示例性方法包括在钻孔中提供在已知距离处与Tx线性间隔的发射机(Tx)和接收机(Rx),测量从Tx传播到每个Rx的信号的线性传播时间(LPts),确定 基于LPts的内联速度(VINL),测量每个Rts的信号经由边界从Tx向Tx传播到每个Rx的反射时间(Rts),从而提供时间各向异性速度(TDAV)关系,取决于 邻近边界的各向异性地层中的有效信号速度(ESV)作为反射时间信号到边界的反射角的函数,VINL和正交速度,执行相似性处理以将TDAV关系与VINL组合以便最佳拟合计算 用于反射时间信号的不同反射角的ESV,并且在计算时计算相应的接收器到边界的距离。