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1.发明授权Method and apparatus for controlling the effect of contact impedance on a galvanic tool in a logging-while-drilling application 有权用于控制钻井应用中的接触阻抗对电动工具的影响的方法和装置公开(公告)号：US06373254B1
公开(公告)日：2002-04-16
申请号：US09320367
申请日：1999-05-25
申请人： Dominique Dion , Mark T. Frey , James Stephen Hall , Qiming Li , Richard A. Rosthal , Mark A. Fredette
发明人： Dominique Dion , Mark T. Frey , James Stephen Hall , Qiming Li , Richard A. Rosthal , Mark A. Fredette
IPC分类号： G01V320
CPC分类号： G01V3/20
摘要： The present invention describes a method and apparatus to control the effect of contact impedance on a formation resistivity measurement during a logging-while-drilling operation. The control of contact impedance is accomplished by maintaining a substantially zero difference in potential between two monitor electrodes positioned on the resistivity logging tool near a current electrode. The tool can employ a ring electrode configuration and/or a button electrode, configuration. The ring electrode configuration incorporates two pairs of ring monitor electrodes on each side of a ring current electrode. The button electrode configuration incorporates. a monitor electrode, surrounded by a current electrode, surrounded by a second monitor electrode. Insulation gaps are positioned between each electrode to separate the electrodes. A variable current is supplied to the current electrode in each configuration to maintain the same potential at each monitor electrode. The effect of contact impedance is controlled through maintaining the same potential at each monitor electrode.
摘要翻译： 本发明描述了一种在钻井操作期间控制接触阻抗对地层电阻率测量的影响的方法和装置。 接触阻抗的控制通过在位于当前电极附近的电阻率测井工具上的两个监视电极之间保持基本上零电位差来实现。 该工具可以采用环形电极配置和/或按钮电极的配置。 环形电极结构在环形电流电极的每一侧都包含两对环形监测电极。 按钮电极配置结合。 由电流电极包围的监视电极，被第二监视电极包围。 绝缘间隙位于每个电极之间以分离电极。 在每个配置中，向当前电极提供可变电流以在每个监视器电极处保持相同的电位。 通过在每个监测电极处保持相同的电位来控制接触阻抗的影响。
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公开(公告)号：US08400160B2
公开(公告)日：2013-03-19
申请号：US12408233
申请日：2009-03-20
IPC分类号： G01V3/10
摘要： A combined resistivity tool incorporating both induction/propagation antennas and lateral resistivity antennas disposed in recesses of downhole tubulars, in which a lateral resistivity antenna includes an insulating base layer disposed in the recess; a toroidal antenna disposed over the insulating base layer; and a shield disposed over the recess.
摘要翻译： 一种组合电阻率工具，其结合了设置在井下管道的凹部中的感应/传播天线和横向电阻率天线，其中横向电阻率天线包括设置在凹部中的绝缘基底层; 设置在所述绝缘基底层上的环形天线; 以及设置在凹部上方的屏蔽件。
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公开(公告)号：US20090179648A1
公开(公告)日：2009-07-16
申请号：US12408233
申请日：2009-03-20
IPC分类号： G01V3/10
摘要： A combined resistivity tool incorporating both induction/propagation antennas and lateral resistivity antennas disposed in recesses of downhole tubulars, in which a lateral resistivity antenna includes an insulating base layer disposed in the recess; a toroidal antenna disposed over the insulating base layer; and a shield disposed over the recess.
摘要翻译： 一种组合电阻率工具，其结合了设置在井下管道的凹部中的感应/传播天线和横向电阻率天线，其中横向电阻率天线包括设置在凹部中的绝缘基底层; 设置在所述绝缘基底层上的环形天线; 以及设置在凹部上方的屏蔽件。
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4.发明授权Resistivity logging tool and method for building the resistivity logging tool 有权电阻率测井工具及建立电阻率测井仪的方法公开(公告)号：US07525315B2
公开(公告)日：2009-04-28
申请号：US10708926
申请日：2004-04-01
摘要： A combined resistivity tool incorporating both induction/propagation antennas and lateral resistivity antennas disposed in recesses of downhole tubulars, in which a lateral resistivity antenna includes an insulating base layer disposed in the recess; a toroidal antenna disposed over the insulating base layer; and a shield disposed over the recess.
摘要翻译： 一种组合电阻率工具，其结合了设置在井下管道的凹部中的感应/传播天线和横向电阻率天线，其中横向电阻率天线包括设置在凹部中的绝缘基底层; 设置在所述绝缘基底层上的环形天线; 以及设置在凹部上方的屏蔽件。
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公开(公告)号：US5767674A
公开(公告)日：1998-06-16
申请号：US639009
申请日：1996-04-17
CPC分类号： G01V3/32
摘要： The instruments of a pulsed nuclear magnetic resonance device are included in a drill collar for evaluating earth formations. The resulting tool makes NMR measurements through an electrically non-conductive shield while the formation is being drilled.
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公开(公告)号：US6008646A
公开(公告)日：1999-12-28
申请号：US44728
申请日：1998-03-19
CPC分类号： G01V3/32
摘要： The instruments of a pulsed nuclear magnetic resonance device are included in a drill collar for evaluating earth formations. The resulting tool makes NMR measurements through an electrically non-conductive shield while the formation is being drilled.
摘要翻译： 脉冲核磁共振装置的仪器被包括在用于评估地层的钻铤中。 所得到的工具在钻探地层时通过非导电屏蔽进行NMR测量。
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