公开(公告)号：US20110231098A1

公开(公告)日：2011-09-22

申请号：US12888232

申请日：2010-09-22

申请人： Dzevat Omeragic ,  Keli Sun ,  Qiming Li ,  Tarek Habashy

发明人： Dzevat Omeragic ,  Keli Sun ,  Qiming Li ,  Tarek Habashy

IPC分类号： G01V3/12 ,  G06F19/00

CPC分类号： G01V3/20 ,  G01V3/28

摘要： A method is provided for determining formation resistivity, anisotropy and dip from wellbore measurements includes moving a well logging instrument through subsurface formations. The instrument includes longitudinal magnetic dipoles and at least one of tilted and transverse magnetic dipoles. Formation layer boundaries and horizontal resistivities of the formation layers are determined from longitudinal magnetic dipole measurements. Vertical resistivities of the formation layers are determined by inversion of anisotropy sensitive measurements. Improved vertical resistivities of the formation layers and dips are determined by inverting symmetrized and anti-symmetrized measurements. Improved vertical resistivities, improved boundaries and improved dips are determined by inversion of the all dipole measurements. Improved horizontal resistivities, further improved layer boundaries and further improved dips are determined by inversion of all dipole measurements.

摘要翻译： 提供了一种用于确定井眼测量的地层电阻率，各向异性和倾角的方法，包括通过地下地层移动测井仪器。 仪器包括纵向磁偶极子和倾斜和横向磁偶极子中的至少一个。 由纵向磁偶极子测量确定地层的形成层边界和水平电阻率。 通过各向异性敏感测量的反演确定形成层的垂直电阻率。 通过反转对称和反对称测量来确定形成层和浸渍层的垂直电阻率的改善。 通过所有偶极子测量的反演来确定改善的垂直电阻率，改善的边界和改善的倾角。 通过所有偶极子测量的反演来确定改进的水平电阻率，进一步改善的层边界和进一步改善的下降。

公开(公告)号：US08433518B2

公开(公告)日：2013-04-30

申请号：US12888232

申请日：2010-09-22

申请人： Dzevat Omeragic ,  Keli Sun ,  Qiming Li ,  Tarek Habashy

发明人： Dzevat Omeragic ,  Keli Sun ,  Qiming Li ,  Tarek Habashy

IPC分类号： G01V1/40 ,  G01V3/10 ,  G06G7/48

CPC分类号： G01V3/20 ,  G01V3/28

摘要： A method is provided for determining formation resistivity, anisotropy and dip from wellbore measurements includes moving a well logging instrument through subsurface formations. The instrument includes longitudinal magnetic dipoles and at least one of tilted and transverse magnetic dipoles. Formation layer boundaries and horizontal resistivities of the formation layers are determined from longitudinal magnetic dipole measurements. Vertical resistivities of the formation layers are determined by inversion of anisotropy sensitive measurements. Improved vertical resistivities of the formation layers and dips are determined by inverting symmetrized and anti-symmetrized measurements. Improved vertical resistivities, improved boundaries and improved dips are determined by inversion of the all dipole measurements. Improved horizontal resistivities, further improved layer boundaries and further improved dips are determined by inversion of all dipole measurements.

摘要翻译： 提供了一种用于确定井眼测量的地层电阻率，各向异性和倾角的方法，包括通过地下地层移动测井仪器。 仪器包括纵向磁偶极子和倾斜和横向磁偶极子中的至少一个。 由纵向磁偶极子测量确定地层的形成层边界和水平电阻率。 通过各向异性敏感测量的反演确定形成层的垂直电阻率。 通过反转对称和反对称测量来确定形成层和浸渍层的垂直电阻率的改善。 通过所有偶极子测量的反演来确定改善的垂直电阻率，改善的边界和改善的倾角。 通过所有偶极子测量的反演来确定改进的水平电阻率，进一步改善的层边界和进一步改善的下降。

公开(公告)号：US08558548B2

公开(公告)日：2013-10-15

申请号：US12844929

申请日：2010-07-28

申请人： Gerald Minerbo ,  Andrei Davydychev ,  Keli Sun

发明人： Gerald Minerbo ,  Andrei Davydychev ,  Keli Sun

IPC分类号： G01V3/10

CPC分类号： G01V3/28

摘要： The present disclosure relates to a method to determine the vertical resistivity of a subsurface formation. A downhole logging tool having a plurality of spaced antennas, at least one of which is a transverse antenna, at least two of which are tilted antennas, and at least two of which are axial antennas is provided. Measurements involving the transverse and/or the tilted antennas of the downhole logging tool are obtained. Voltage ratios are formed using the measurements, and conditioning factors are formed by raising the determined voltage ratios not involving the transverse antenna to some arbitrary power. The sum of the exponents of the conditioning factors preferably equals one. A voltage ratio involving the transverse antenna is multiplied by the conditioning factors, and the vertical resistivity of the subsurface formation is determined using the resulting ratio.

摘要翻译： 本公开涉及一种确定地下地层垂直电阻率的方法。 一种具有多个间隔天线的井下测井工具，其中至少一个是横向天线，其中至少两个是倾斜天线，并且其中至少两个是轴向天线。 获得涉及井下测井工具的横向和/或倾斜天线的测量。 使用测量形成电压比，并且通过将不涉及横向天线的确定的电压比提高到某种任意功率而形成调节因子。 调节因子的指数之和优选等于1。 涉及横向天线的电压比乘以调节因子，并且使用所得到的比率来确定地下地层的垂直电阻率。

公开(公告)号：US20120025834A1

公开(公告)日：2012-02-02

申请号：US12844929

申请日：2010-07-28

申请人： GERALD MINERBO ,  Andrei Davydychev ,  Keli Sun

发明人： GERALD MINERBO ,  Andrei Davydychev ,  Keli Sun

IPC分类号： G01V3/18

CPC分类号： G01V3/28

摘要： The present disclosure relates to a method to determine the vertical resistivity of a subsurface formation. A downhole logging tool having a plurality of spaced antennas, at least one of which is a transverse antenna, at least two of which are tilted antennas, and at least two of which are axial antennas is provided. Measurements involving the transverse and/or the tilted antennas of the downhole logging tool are obtained. Voltage ratios are formed using the measurements, and conditioning factors are formed by raising the determined voltage ratios not involving the transverse antenna to some arbitrary power. The sum of the exponents of the conditioning factors preferably equals one. A voltage ratio involving the transverse antenna is multiplied by the conditioning factors, and the vertical resistivity of the subsurface formation is determined using the resulting ratio.

摘要翻译： 本公开涉及一种确定地下地层垂直电阻率的方法。 一种具有多个间隔天线的井下测井工具，其中至少一个是横向天线，其中至少两个是倾斜天线，并且其中至少两个是轴向天线。 获得涉及井下测井工具的横向和/或倾斜天线的测量。 使用测量形成电压比，并且通过将不涉及横向天线的确定的电压比提高到某种任意功率而形成调节因子。 调节因子的指数之和优选等于1。 涉及横向天线的电压比乘以调节因子，并且使用所得到的比率来确定地下地层的垂直电阻率。