公开(公告)号：US20060192561A1

公开(公告)日：2006-08-31

申请号：US11307673

申请日：2006-02-16

申请人： Scott Chesser ,  Richard Ward ,  Bulent Finci ,  Andrei Davydychev ,  William Vandermeer ,  John Hunka

发明人： Scott Chesser ,  Richard Ward ,  Bulent Finci ,  Andrei Davydychev ,  William Vandermeer ,  John Hunka

IPC分类号： G01V3/18

CPC分类号： G01V3/28

摘要： An electromagnetic logging tool includes a support configured for disposal in a well; at least one antenna mounted on the support; and a plurality of coils mounted on the support proximate the at least one antenna, wherein the plurality of the coils are configured for selective connection with the at least one antenna. A methods for balancing an induction array on an electromagnetic logging tool includes measuring a mutual coupling between a transmitter and a receiver on the electromagnetic logging tool; and selectively connecting a subset of a plurality of coils on the electromagnetic logging tool to the transmitter or the receiver based on the measured mutual coupling.

摘要翻译： 电磁测井工具包括配置成在井中处置的支撑件; 安装在所述支撑件上的至少一个天线; 以及安装在靠近所述至少一个天线的所述支撑件上的多个线圈，其中所述多个线圈被配置为与所述至少一个天线的选择性连接。 用于平衡电磁测井工具上的感应阵列的方法包括测量电磁测井工具上的发射器和接收器之间的相互耦合; 以及基于所测量的互耦合，将电磁测井工具上的多个线圈的子集选择性地连接到发射器或接收器。

公开(公告)号：US20070107896A1

公开(公告)日：2007-05-17

申请号：US11419930

申请日：2006-05-23

申请人： Bulent Finci ,  Scott Chesser ,  Jingjing (Karen) Sun ,  Denis Lebreton ,  Richard Ward ,  Andrei Davydychev ,  William Vandermeer ,  John Hunka

发明人： Bulent Finci ,  Scott Chesser ,  Jingjing (Karen) Sun ,  Denis Lebreton ,  Richard Ward ,  Andrei Davydychev ,  William Vandermeer ,  John Hunka

IPC分类号： E21B47/09

CPC分类号： E21B47/011

摘要： A composite encased tool for making subsurface measurements in a borehole traversing a subsurface formation includes a conductive mandrel, a first composite layer wrapped around the conductive mandrel, the first composite layer having one or more slots, a source or sensor disposed in each of the one or more slots, and a second composite layer wrapped around the first composite layer with the source or sensor in the one or more slots.

摘要翻译： 用于在穿过地下地层的钻孔中进行地下测量的复合材料封装工具包括导电心轴，围绕导电心轴缠绕的第一复合层，具有一个或多个槽的第一复合层，设置在每个中的每一个中的源或传感器 或更多的槽，以及在所述一个或多个槽中的所述源或传感器缠绕在所述第一复合层周围的第二复合层。

公开(公告)号：US20060192562A1

公开(公告)日：2006-08-31

申请号：US11307674

申请日：2006-02-16

申请人： Andrei Davydychev ,  John Hunka ,  Thomas Barber ,  Scott Chesser ,  Bulent Finci ,  Jingjing (Karen) Sun ,  William Vandermeer ,  Richard Ward

发明人： Andrei Davydychev ,  John Hunka ,  Thomas Barber ,  Scott Chesser ,  Bulent Finci ,  Jingjing (Karen) Sun ,  William Vandermeer ,  Richard Ward

IPC分类号： G01V3/18

CPC分类号： G01V3/28

摘要： An electromagnetic logging tool is disclosed that includes a support; and at least one four-coil array disposed on the support, wherein the at least one four-coil array comprises: a transmitter, a bucking coil, a receiver, and a trim coil. A method for balancing an induction array is disclosed that includes applying an alternating current to a transmitter of the induction array that comprises the transmitter, a bucking coil and a receiver; measuring a mutual coupling between the transmitter and the receiver; and adding an extra bucking coil, if the mutual coupling exceeds a selected criterion.

摘要翻译： 公开了一种包括支架的电磁测井工具; 以及设置在所述支撑件上的至少一个四线圈阵列，其中所述至少一个四线圈阵列包括：发射器，降压线圈，接收器和调整线圈。 公开了一种用于平衡感应阵列的方法，其包括向包括发射器，降压线圈和接收器的感应阵列的发射器施加交流电; 测量发射机和接收机之间的相互耦合; 并且如果互耦超过所选择的标准，则添加额外的降压线圈。

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。