公开(公告)号：US20060066313A1

公开(公告)日：2006-03-30

申请号：US10711657

申请日：2004-09-29

Applicant: DEAN HOMAN ,  DZEVAT OMERAGIC ,  NICOLAS SEBLINE ,  HANMING WANG

Inventor： DEAN HOMAN ,  DZEVAT OMERAGIC ,  NICOLAS SEBLINE ,  HANMING WANG

IPC: G01V3/10

CPC classification number: G01V3/28

Abstract: A sensor for measuring mud resistivity in a borehole includes a transmitter having a magnetic moment in a first direction; and a receiver having a magnetic moment in a second direction, wherein the first direction and the second direction are substantially different, wherein the transmitter and the receiver are disposed in an insulating collar of a downhole tool, and wherein the transmitter is disposed at a selected distance no more than 10 inches from the receiver along a longitudinal axis of the downhole tool.

Abstract translation: 用于测量钻孔中的泥浆电阻率的传感器包括：具有在第一方向上的磁矩的发射器; 以及具有在第二方向上的磁矩的接收器，其中所述第一方向和所述第二方向基本上不同，其中所述发射器和接收器设置在井下工具的绝缘环中，并且其中所述发射器设置在选定的 沿着井下工具的纵向轴距离接收器不超过10英寸的距离。

公开(公告)号：US08571797B2

公开(公告)日：2013-10-29

申请号：US12597977

申请日：2008-05-08

Applicant: Peter T. Wu ,  Hanming Wang ,  Gerald N. Minerbo

Inventor： Peter T. Wu ,  Hanming Wang ,  Gerald N. Minerbo

IPC: G01V3/38

CPC classification number: G01V13/00 ,  G01V1/50 ,  G01V3/38

Abstract: A method to determine one or more borehole corrected formation properties using measurements made using a logging tool disposed in a borehole penetrating an earth formation is disclosed. The measurements are used to determine an apparent conductivity tensor for the formation and, for a set of parameters, a parameter value for each parameter in a subset of the set of parameters. A parameter value for each parameter in the set of parameters not in the subset is provided and a borehole-inclusive modeled conductivity tensor is computed. The apparent conductivity tensor and the borehole-inclusive modeled conductivity tensor are iteratively used to optimize the parameter values, and the optimized parameter values are used to compute an optimized conductivity tensor. A borehole corrected conductivity tensor is computed using the optimized conductivity tensor, and the borehole corrected formation properties are determined using the borehole corrected conductivity tensor and/or the optimized parameter values.

Abstract translation: 公开了一种使用设置在穿透地层的钻孔中的测井工具进行的测量来确定一个或多个钻孔校正地层特性的方法。 测量用于确定形成的表观电导率张量，并且对于一组参数，确定该组参数的子集中的每个参数的参数值。 提供不在子集中的参数集中的每个参数的参数值，并计算包含井眼的建模的电导率张量。 迭代地使用表观电导率张量和含钻孔的建模的电导率张量来优化参数值，并且使用优化的参数值来计算优化的电导率张量。 使用优化的电导率张量计算钻孔校正的电导率张量，并且使用钻孔校正的电导率张量和/或优化的参数值来确定钻孔校正的形成性质。

公开(公告)号：US08441261B2

公开(公告)日：2013-05-14

申请号：US12817060

申请日：2010-06-16

Applicant: Dean Homan ,  Wich Wichers ,  Hanming Wang ,  Robert Leveridge

Inventor： Dean Homan ,  Wich Wichers ,  Hanming Wang ,  Robert Leveridge

IPC: G01V3/00 ,  G01V1/40

CPC classification number: G01V3/28

Abstract: A method for determining orientation of an electrically conductive formation proximate an electrically substantially non-conductive formation includes measuring multiaxial electromagnetic induction response within the substantially non-conductive formation using an instrument disposed in a wellbore drilled through the formations. A difference from zero conductivity is determined for each component measurement of the multiaxial electromagnetic induction response. The differences are used to correct the measured response of each component measurement in the electrically conductive response. The corrected component measurements are used to determine the orientation of the conductive formation.

Abstract translation: 用于确定接近电气基本不导电地层的导电地层的取向的方法包括使用设置在穿过地层钻井的井筒中的仪器来测量在基本不导电地层内的多轴电磁感应响应。 对于多轴电磁感应响应的每个分量测量，确定零电导率的差异。 这些差异用于校正导电响应中每个部件测量的测量响应。 使用校正的分量测量来确定导电层的取向。

公开(公告)号：US20100198569A1

公开(公告)日：2010-08-05

申请号：US12597977

申请日：2008-05-08

Applicant: Peter T. Wu ,  Hanming Wang ,  Gerald N. Minerbo

Inventor： Peter T. Wu ,  Hanming Wang ,  Gerald N. Minerbo

IPC: G06G7/48

CPC classification number: G01V13/00 ,  G01V1/50 ,  G01V3/38

Abstract: A method to determine one or more borehole corrected formation properties using measurements made using a logging tool disposed in a borehole penetrating an earth formation is disclosed. The measurements are used to determine an apparent conductivity tensor for the formation and, for a set of parameters, a parameter value for each parameter in a subset of the set of parameters. A parameter value for each parameter in the set of parameters not in the subset is provided and a borehole-inclusive modeled conductivity tensor is computed. The apparent conductivity tensor and the borehole-inclusive modeled conductivity tensor are iteratively used to optimize the parameter values, and the optimized parameter values are used to compute an optimized conductivity tensor. A borehole corrected conductivity tensor is computed using the optimized conductivity tensor, and the borehole corrected formation properties are determined using the borehole corrected conductivity tensor and/or the optimized parameter values.

Abstract translation: 公开了一种使用设置在穿透地层的钻孔中的测井工具进行的测量来确定一个或多个钻孔校正地层特性的方法。 测量用于确定形成的表观电导率张量，并且对于一组参数，确定该组参数的子集中的每个参数的参数值。 提供不在子集中的参数集中的每个参数的参数值，并计算包含井眼的建模的电导率张量。 迭代地使用表观电导率张量和含钻孔的建模的电导率张量来优化参数值，并且使用优化的参数值来计算优化的电导率张量。 使用优化的电导率张量计算钻孔校正的电导率张量，并且使用钻孔校正的电导率张量和/或优化的参数值来确定钻孔校正的形成性质。

公开(公告)号：US07514930B2

公开(公告)日：2009-04-07

申请号：US10707274

申请日：2003-12-02

Applicant: Kuo-Chiang Chen ,  Hanming Wang

Inventor： Kuo-Chiang Chen ,  Hanming Wang

IPC: G01V3/02

CPC classification number: G01V3/28

Abstract: A well logging tool apparatus is disclosed for conducting measurements in a borehole environment surrounding a borehole that traverses a subsurface formation. The apparatus includes an elongated conductive mandrel having a longitudinal axis, an antenna array positioned about the mandrel and including a transmitter for transmitting electromagnetic energy into the formation, and a sleeve positioned about the antenna array. The apparatus further includes a first set of electrodes and a second set of electrodes. Each electrode has an outer end that is exposed on the outer surface of the sleeve for conductive contact with an adjacent conductive borehole environment. Further, the first and second sets of electrodes are spaced longitudinally apart such that the transmitter is positioned longitudinally therebetween. Electrodes of the first and second sets are conductively interconnected with the mandrel such that when the well logging apparatus is operated in a borehole environment having borehole currents therein, one or more current path loops are provided for shorting borehole currents.

Abstract translation: 公开了用于在穿过地下地层的钻孔周围的井眼环境中进行测量的测井工具装置。 该装置包括具有纵向轴线的细长导电心轴，围绕心轴定位的天线阵列，并且包括用于将电磁能量传输到地层中的发射器和围绕天线阵列定位的套筒。 该装置还包括第一组电极和第二组电极。 每个电极具有露出在套筒的外表面上的外端，用于与相邻的导电钻孔环境导电接触。 此外，第一组和第二组电极被纵向间隔开，使得发射器纵向位于它们之间。 第一组和第二组的电极与心轴导电地互连，使得当测井装置在其中具有钻孔电流的钻孔环境中操作时，提供一个或多个电流路径环以短路钻孔电流。

公开(公告)号：US07027923B2

公开(公告)日：2006-04-11

申请号：US10707427

申请日：2003-12-12

Applicant: Thomas D. Barber ,  Hanming Wang

Inventor： Thomas D. Barber ,  Hanming Wang

IPC: G01V3/18

CPC classification number: G01V13/00 ,  G01V3/28

Abstract: A method for determining a sonde error in a logging tool comprising a transverse array includes obtaining a first measurement using the transverse array while the logging tool is at a first height from ground in a selected orientation; obtaining a second measurement using the transverse array while the logging tool is at a second height from the ground in the selected orientation; deriving a difference measurement from the first measurement and the second measurement; determining a background signal using the difference measurement and a predetermined function, wherein the predetermined function relates earth signals in a plurality of signals obtained at the second height to a plurality of difference signals between signals obtained at the first height and the second height at a plurality of formation conductivities; and determining the sonde error by subtracting the background signal from the second measurement.

Abstract translation: 一种用于确定包括横向阵列的测井工具中的探测器误差的方法包括：在所述测井工具处于选定方向的地面的第一高度时，使用所述横向阵列获得第一测量; 当所述测井工具处于与所述选定方向的地面相距的第二高度时，使用所述横向阵列获得第二测量; 从第一测量和第二测量得到差值测量; 使用所述差分测量和预定功能来确定背景信号，其中所述预定功能将在所述第二高度获得的多个信号中的接地信号与在所述第一高度和所述第二高度处获得的信号之间的多个差信号相关联 的地层电导率; 以及通过从所述第二测量中减去所述背景信号来确定所述探测器误差。

公开(公告)号：US20050116718A1

公开(公告)日：2005-06-02

申请号：US10707274

申请日：2003-12-02

Applicant: KUO-CHIANG CHEN ,  HANMING WANG

Inventor： KUO-CHIANG CHEN ,  HANMING WANG

IPC: G01V3/28 ,  G01V3/30 ,  G01V3/18

CPC classification number: G01V3/28

Abstract: A well logging tool apparatus is disclosed for conducting measurements in a borehole environment surrounding a borehole that traverses a subsurface formation. The apparatus includes an elongated conductive mandrel having a longitudinal axis, an antenna array positioned about the mandrel and including a transmitter for transmitting electromagnetic energy into the formation, and a sleeve positioned about the antenna array. The apparatus further includes a first set of electrodes and a second set of electrodes. Each electrode has an outer end that is exposed on the outer surface of the sleeve for conductive contact with an adjacent conductive borehole environment. Further, the first and second sets of electrodes are spaced longitudinally apart such that the transmitter is positioned longitudinally therebetween. Electrodes of the first and second sets are conductively interconnected with the mandrel such that when the well logging apparatus is operated in a borehole environment having borehole currents therein, one or more current path loops are provided for shorting borehole currents.

Abstract translation: 公开了用于在穿过地下地层的钻孔周围的井眼环境中进行测量的测井工具装置。 该装置包括具有纵向轴线的细长导电心轴，围绕心轴定位的天线阵列，并且包括用于将电磁能量传输到地层中的发射器和围绕天线阵列定位的套筒。 该装置还包括第一组电极和第二组电极。 每个电极具有露出在套筒的外表面上的外端，用于与相邻的导电钻孔环境导电接触。 此外，第一组和第二组电极被纵向间隔开，使得发射器纵向位于它们之间。 第一组和第二组的电极与心轴导电地互连，使得当测井装置在其中具有钻孔电流的钻孔环境中操作时，提供一个或多个电流路径环以短路钻孔电流。