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：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。