Method and system to determine the geo-stresses regime factor Q from borehole sonic measurement modeling
    3.
    发明授权
    Method and system to determine the geo-stresses regime factor Q from borehole sonic measurement modeling 有权
    从井眼声波测量建模中确定地应力状态因子Q的方法和系统

    公开(公告)号:US08223586B2

    公开(公告)日:2012-07-17

    申请号:US12564101

    申请日:2009-09-22

    IPC分类号: G01V1/00

    CPC分类号: G01V1/30

    摘要: Methods and systems for analyzing subterranean formations in-situ stress are disclosed. A method for extracting geological horizon on-demand from a 3D seismic data set, comprises receiving sonic log data; computing the anisotropic shear moduli C44, C55 and C66; determining in-situ stress type and selecting an in-situ stress expression corresponding to the in-situ stress type; computing stress regime factor Q of the formation interval; and computing and outputting the maximum stress σH by using the stress regime factor Q, Vertical stress σv and Minimum horizontal stress σh.

    摘要翻译: 公开了用于分析地下地层原位应力的方法和系统。 一种用于从3D地震数据集中按需地提取地质地平线的方法,包括接收声波测井数据; 计算各向异性剪切模量C44,C55和C66; 确定原位应力类型并选择对应于原位应力类型的原位应力表达; 计算形成间隔的应力状态因子Q; 通过使用应力方程因子Q,垂直应力σ和最小水平应力h来计算和输出最大应力σ。

    Methods and systems for calibrating acoustic receivers
    4.
    发明授权
    Methods and systems for calibrating acoustic receivers 有权
    用于校准声学接收器的方法和系统

    公开(公告)号:US07554882B2

    公开(公告)日:2009-06-30

    申请号:US11309153

    申请日:2006-06-29

    IPC分类号: G01V1/40 H04B17/00

    CPC分类号: G01V13/00

    摘要: A method for in-situ calibrating acoustic receivers while the tool is in an open or cased borehole or during a logging run in a borehole. The method and system facilitate calibrating the acoustic receivers while they are mounted to a downhole acoustic tool. Calibrating the acoustic receivers in situ provides more accurate results than previously available. The method and system provide separate compensation factors for the acoustic receivers at different frequencies and for different transmission sources. The separate compensation factors facilitate more accurate signal acquisition over a wider range of conditions.

    摘要翻译: 一种在工具处于开放或套管钻孔中或在井眼测井期间原位校准声学接收器的方法。 该方法和系统便于将声学接收器安装到井下声学工具上进行校准。 原位校准声学接收器比以前提供更准确的结果。 该方法和系统为不同频率和不同传输源的声接收机提供单独的补偿因子。 单独的补偿因素有助于在更广泛的条件下更准确地获取信号。

    METHOD AND SYSTEM TO DETERMINE THE GEO-STRESSES REGIME FACTOR Q FROM BOREHOLE SONIC MEASUREMENT MODELING
    5.
    发明申请
    METHOD AND SYSTEM TO DETERMINE THE GEO-STRESSES REGIME FACTOR Q FROM BOREHOLE SONIC MEASUREMENT MODELING 有权
    确定地球应力因子的方法和系统从井下声速测量建模

    公开(公告)号:US20100238764A1

    公开(公告)日:2010-09-23

    申请号:US12564101

    申请日:2009-09-22

    IPC分类号: G01V1/00

    CPC分类号: G01V1/30

    摘要: Methods and systems for analyzing subterranean formations in-situ stress are disclosed. A method for extracting geological horizon on-demand from a 3D seismic data set, comprises receiving sonic log data; computing the anisotropic shear moduli C44, C55 and C66; determining in-situ stress type and selecting an in-situ stress expression corresponding to the in-situ stress type; computing stress regime factor Q of the formation interval; and computing and outputting the maximum stress σH by using the stress regime factor Q, Vertical stress σv and Minimum horizontal stress σh.

    摘要翻译: 公开了用于分析地下地层原位应力的方法和系统。 一种用于从3D地震数据集中按需地提取地质地平线的方法,包括接收声波测井数据; 计算各向异性剪切模量C44,C55和C66; 确定原位应力类型并选择对应于原位应力类型的原位应力表达; 计算形成间隔的应力状态因子Q; 通过使用应力方程因子Q,垂直应力σ和最小水平应力h来计算和输出最大应力σ。

    Methods and apparatus to calculate a distance from a borehole to a boundary of an anisotropic subterranean rock layer
    6.
    发明授权
    Methods and apparatus to calculate a distance from a borehole to a boundary of an anisotropic subterranean rock layer 有权
    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

    公开(公告)号:US08913460B2

    公开(公告)日:2014-12-16

    申请号:US13587931

    申请日:2012-08-17

    IPC分类号: G01V1/28 G01V1/50

    CPC分类号: G01V1/50

    摘要: 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.

    摘要翻译: 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。

    Methods and Apparatus to Calculate A Distance from A Borehole to A Boundary of An Anisotropic Subterranean Rock Layer
    7.
    发明申请
    Methods and Apparatus to Calculate A Distance from A Borehole to A Boundary of An Anisotropic Subterranean Rock Layer 有权
    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

    公开(公告)号:US20120307592A1

    公开(公告)日:2012-12-06

    申请号:US13587931

    申请日:2012-08-17

    IPC分类号: G01V1/28

    CPC分类号: G01V1/50

    摘要: 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.

    摘要翻译: 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。

    Processing sonic waveform measurements
    8.
    发明授权
    Processing sonic waveform measurements 有权
    处理声波测量

    公开(公告)号:US06654688B1

    公开(公告)日:2003-11-25

    申请号:US09937935

    申请日:2002-01-18

    IPC分类号: G01V300

    CPC分类号: G01V1/48

    摘要: Methods for determining the best value for at least one slowness-related parameter that has been determined in a number of ways is disclosed. Sonic logging data input in the methods are processed to determine multiple values of at least one slowness-related parameter using slowness/time coherence (STC) processing methods. The error of each determined parameter is determined and the determined errors used in selecting a representative parameter value from the multiple determined slowness-related parameter values.

    摘要翻译: 公开了用于确定已经以多种方式确定的至少一个慢度相关参数的最佳值的方法。 使用慢度/时间相干(STC)处理方法处理方法中输入的声波记录数据以确定至少一个慢度相关参数的多个值。 确定每个确定的参数的误差,并且从多个确定的慢度相关参数值中选择确定的误差用于选择代表参数值。