Adaptive borehole corrections accounting for eccentricity for array laterologs
    1.
    发明授权
    Adaptive borehole corrections accounting for eccentricity for array laterologs 有权
    自适应钻孔校正,用于排列阵列的偏心度

    公开(公告)号:US08775084B2

    公开(公告)日:2014-07-08

    申请号:US12234106

    申请日:2008-09-19

    IPC分类号: G01V3/38

    CPC分类号: G01V3/38 E21B47/09

    摘要: Disclosed is an adaptive borehole correction (ABC) technique based on an inversion approach that advantageously corrects shallow laterolog measurements for borehole effects, including determining and accounting for unknown tool eccentricity. The algorithm is based on simplex radial 1-D inversion where at every logging up to four unknowns are determined, namely tool eccentricity, Rt, Rxo, and Lxo. After that a borehole correction methodology is employed wherein the tool response in a borehole with real mud resistivity Rm is modified to a response in the borehole with virtual mud resistivity equal to Rxo.

    摘要翻译: 公开了一种基于反演方法的自适应钻孔校正(ABC)技术,其有利地校正了井眼效应的浅层后测量,包括确定和计算未知的工具偏心率。 该算法基于单向径向1-D反演,其中每个记录最多确定四个未知数,即工具偏心率,Rt,Rxo和Lxo。 之后,采用井眼校正方法,其中具有实际泥浆电阻率Rm的钻孔中的工具响应被修改为钻孔中的响应,虚拟泥浆电阻率等于Rxo。

    Adaptive Borehole Corrections Accounting for Eccentricity for Array Laterlogs
    2.
    发明申请
    Adaptive Borehole Corrections Accounting for Eccentricity for Array Laterlogs 有权
    自适应孔眼校正计算阵列后视的偏心度

    公开(公告)号:US20090082969A1

    公开(公告)日:2009-03-26

    申请号:US12234106

    申请日:2008-09-19

    IPC分类号: G01V3/38

    CPC分类号: G01V3/38 E21B47/09

    摘要: Disclosed is an adaptive borehole correction (ABC) technique based on an inversion approach that advantageously corrects shallow laterolog measurements for borehole effects, including determining and accounting for unknown tool eccentricity. The algorithm is based on simplex radial 1-D inversion where at every logging up to four unknowns are determined, namely tool eccentricity, Rt, Rxo, and Lxo. After that a borehole correction methodology is employed wherein the tool response in a borehole with real mud resistivity Rm is modified to a response in the borehole with virtual mud resistivity equal to Rxo.

    摘要翻译: 公开了一种基于反演方法的自适应钻孔校正(ABC)技术,其有利地校正了井眼效应的浅层后测量,包括确定和计算未知的工具偏心率。 该算法基于单向径向1-D反演,其中每个记录最多确定四个未知数,即工具偏心率,Rt,Rxo和Lxo。 之后,采用井眼校正方法,其中具有实际泥浆电阻率Rm的钻孔中的工具响应被修改为钻孔中的响应,虚拟泥浆电阻率等于Rxo。

    Anycast Aware Transport for Content Distribution Networks
    3.
    发明申请
    Anycast Aware Transport for Content Distribution Networks 有权
    内容分发网络的Anycast Aware传输

    公开(公告)号:US20110055316A1

    公开(公告)日:2011-03-03

    申请号:US12553769

    申请日:2009-09-03

    IPC分类号: G06F15/16

    摘要: A system for providing content includes a plurality of content delivery servers and a routing control module. Each of the content delivery servers is configured to receive a first request from a client system sent to an anycast IP address for the content, and to provide a first portion of the content to the client system. Each of the content delivery servers is further configured to receive a second request from the client system sent to the anycast IP address for a second portion of the content, and to provide the second portion of the content to the client system. The routing control module is configured to modify the routing of the anycast address from a first content delivery server to a second content delivery server.

    摘要翻译: 用于提供内容的系统包括多个内容传递服务器和路由控制模块。 每个内容递送服务器被配置为从发送到内容的任播IP地址的客户端系统接收第一请求,并且向客户端系统提供内容的第一部分。 每个内容递送服务器还被配置为从第二部分的内容接收从发送到任播IP地址的客户端系统的第二部分的内容的第二请求,并将内容的第二部分提供给客户端系统。 路由控制模块被配置为修改任播地址从第一内容递送服务器到第二内容递送服务器的路由。

    LATE TIME ROTATION PROCESSING OF MULTI-COMPONENT TRANSIENT EM DATA FOR FORMATION DIP AND AZIMUTH
    4.
    发明申请
    LATE TIME ROTATION PROCESSING OF MULTI-COMPONENT TRANSIENT EM DATA FOR FORMATION DIP AND AZIMUTH 审中-公开
    用于形成DIP和AZIMUTH的多组分瞬态EM数据的时间旋转处理

    公开(公告)号:US20150134256A1

    公开(公告)日:2015-05-14

    申请号:US14539014

    申请日:2014-11-12

    IPC分类号: G01V3/38 G01V3/12

    CPC分类号: G01V3/38 G01V3/12 G01V3/28

    摘要: A system and method to determine a dip angle and an azimuth angle of a formation are described. The system includes a transmitter disposed in a borehole to change a transmitted current to induce a current in an earth formation, and a receiver disposed in the borehole, spaced apart from the transmitter, to receive transient electromagnetic signals. The system also includes a processor to extract multi-time focusing (MTF) responses from the transient electromagnetic signals, determine a relative dip angle and a rotation of a tool comprising the transmitter and receiver based on the MTF responses, and estimate the dip angle and the azimuth angle of the formation based on the relative dip angle and the rotation of the tool.

    摘要翻译: 描述了确定地层的倾角和方位角的系统和方法。 该系统包括设置在钻孔中的发射器,以改变传输的电流以感应地层中的电流;以及布置在距离发射器间隔开的钻孔中的接收器,以接收瞬时电磁信号。 该系统还包括处理器,用于从瞬态电磁信号中提取多次聚焦(MTF)响应,基于MTF响应确定包括发射器和接收器的工具的相对倾角和旋转,并估计倾角 基于相对倾角和工具旋转的地层的方位角。

    Anycast aware transport for content distribution networks
    6.
    发明授权
    Anycast aware transport for content distribution networks 有权
    内容分发网络的任播感知传输

    公开(公告)号:US09450804B2

    公开(公告)日:2016-09-20

    申请号:US12553769

    申请日:2009-09-03

    摘要: A system for providing content includes a plurality of content delivery servers and a routing control module. Each of the content delivery servers is configured to receive a first request from a client system sent to an anycast IP address for the content, and to provide a first portion of the content to the client system. Each of the content delivery servers is further configured to receive a second request from the client system sent to the anycast IP address for a second portion of the content, and to provide the second portion of the content to the client system. The routing control module is configured to modify the routing of the anycast address from a first content delivery server to a second content delivery server.

    摘要翻译: 用于提供内容的系统包括多个内容传递服务器和路由控制模块。 每个内容递送服务器被配置为从发送到内容的任播IP地址的客户端系统接收第一请求,并且向客户端系统提供内容的第一部分。 每个内容递送服务器还被配置为从第二部分的内容接收从发送到任播IP地址的客户端系统的第二部分的内容的第二请求,并将内容的第二部分提供给客户端系统。 路由控制模块被配置为修改任播地址从第一内容递送服务器到第二内容递送服务器的路由。

    Method of interpreting induction logs in horizontal wells
    7.
    发明授权
    Method of interpreting induction logs in horizontal wells 有权
    解释水平井中的感应测井的方法

    公开(公告)号:US06308136B1

    公开(公告)日:2001-10-23

    申请号:US09519029

    申请日:2000-03-03

    IPC分类号: G01V338

    CPC分类号: G01V3/38 G01V3/28

    摘要: An induction logging tool is used in an inclined borehole for determining properties of subsurface formations formation away from the borehole. Measurements are made at a plurality of transmitter-receiver (T-R) distances. After correction of the data for skin effects and optionally correcting for eddy currents within the borehole, the shallow measurements (those from short T-R spacing or from high frequency data) are inverted to give a model of the near borehole (invaded zone resistivity and diameter) and the resistivity of the formation outside the invaded zone. Using this model, a prediction is made of the data measured by the mid-level and deep sensors (long T-R spacings). A discrepancy between these predicted values and the actual measurements made by the midlevel and deep sensors is indicative of additional layer boundaries in the proximity of the wellbore.

    摘要翻译: 感应测井工具用于倾斜钻孔,用于确定远离钻孔的地下地层形成的性质。 在多个发射机 - 接收机(T-R)距离进行测量。 在校正了皮肤效应的数据并可选地校正钻孔内的涡流之后,浅测量(来自短TR间距或高频数据的那些)被反转以给出近钻孔的模型(入侵区电阻率和直径) 以及入侵区外的地层电阻率。 使用该模型,预测由中级和深层传感器测量的数据(长T-R间距)。 这些预测值与由中级和深度传感器进行的实际测量之间的差异表示在井筒附近的附加层边界。

    Real-time 2-dimensional inversion process and its application to
induction resistivity well logging
    8.
    发明授权
    Real-time 2-dimensional inversion process and its application to induction resistivity well logging 失效
    实时二维反演过程及其在感应电阻率测井中的应用

    公开(公告)号:US5703773A

    公开(公告)日:1997-12-30

    申请号:US598443

    申请日:1996-02-08

    IPC分类号: G01V3/28 G01V3/38 G06F19/00

    CPC分类号: G01V3/38 G01V3/28

    摘要: The invention is a method of inversion processing signals from an induction well logging instrument including a transmitter and a plurality of receivers at spaced apart locations. The method includes skin effect correcting the responses of the receivers by extrapolating the receiver responses to zero frequency. A model is generated of the media surrounding said instrument. Conductivities of elements in the model are then adjusted so that a measure of misfit between the skin-effect corrected receiver responses and simulated receiver responses based on the model is minimized. The geometry of the model is then adjusted so that the measure of misfit between the skin-effect corrected receiver responses and the simulated receiver responses based on the model is further minimized. In a preferred embodiment of the invention, the step of adjusting the geometry includes minimizing the measure of misfit between the simulated responses and the receiver responses from selected ones of the receivers closely spaced to the transmitter. Numbers of and positions of radial boundaries are then determined by minimizing the measure of misfit for all the receiver responses.

    摘要翻译: 本发明是一种从感应测井仪器反转处理信号的方法,该仪器在间隔开的位置包括发射器和多个接收器。 该方法包括通过将接收机响应外推到零频率来校正接收机的响应的皮肤效应。 产生围绕所述仪器的介质的模型。 然后调整模型中的元素的电导率,使得基于模型的皮肤效应校正的接收器响应和模拟的接收器响应之间的误差测量被最小化。 然后调整模型的几何形状,使得基于模型的皮肤效应校正接收器响应和模拟接收器响应之间的失配度的测量进一步最小化。 在本发明的优选实施例中,调整几何形状的步骤包括最小化模拟响应与接收器响应之间的误差的测量,所述接收机响应与选择的与发射机间隔开的接收机的响应。 然后通过最小化所有接收机响应的误差测量来确定径向边界的数量和位置。

    METHODS OF TRANSIENT EM DATA COMPRESSION
    9.
    发明申请
    METHODS OF TRANSIENT EM DATA COMPRESSION 有权
    瞬态EM数据压缩方法

    公开(公告)号:US20150137818A1

    公开(公告)日:2015-05-21

    申请号:US14546134

    申请日:2014-11-18

    IPC分类号: E21B47/12

    CPC分类号: E21B47/122 G01V3/34

    摘要: A system and method to compress transient signals are described. The system includes a transmitter disposed in a borehole to change a transmitted current and induce a current in an earth formation, and a receiver disposed in the borehole to receive the transient signals resulting from the transmitted current. The system also includes a processor to compress the transient signals, the processor compressing the transient signals based on a spline approximation method or an Eigen value method for each transient signal based on whether the spline approximation method or the Eigen value method results in a fewer number of parameters representing the transient signal.

    摘要翻译: 描述了压缩瞬态信号的系统和方法。 该系统包括设置在钻孔中的变送器,以改变传输的电流并且引起地层中的电流,以及设置在钻孔中的接收器,以接收由传输的电流产生的瞬态信号。 该系统还包括用于压缩瞬态信号的处理器,处理器基于用于每个瞬态信号的样条近似方法或特征值方法来压缩瞬态信号,基于样条近似方法或本征值方法是否导致较少数量 表示瞬态信号的参数。