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61. 发明授权

US08890541B2 Method and apparatus for calibrating deep-reading multi-component induction tools with minimal ground effects 有权
标题翻译：用于校准具有最小地面效应的深度读数多分量感应工具的方法和装置
公开(公告)号：US08890541B2
公开(公告)日：2014-11-18
申请号：US13211863
申请日：2011-08-17
申请人： Fei Le , Michael B. Rabinovich , Stanislav W. Forgang
发明人： Fei Le , Michael B. Rabinovich , Stanislav W. Forgang
IPC分类号： G01R35/00 , G01V13/00 , G01V3/28
CPC分类号： G01V13/00 , G01V3/28
摘要： An apparatus and method for calibrating a multi-component induction logging tool. The method may include orienting a Z-transmitter coil to be substantially orthogonal to at least one Z-receiver coil, positioning an X-transmitter coil disposed on the logging tool so that the X-transmitter coil is substantially parallel to a conducting surface; encompassing the Z-transmitter coil, the X-transmitter coil, and at least one Z-receiver coil of the logging tool with at least one conducting loop of a calibrator; and calibrating the logging tool using the calibrator. The apparatus may include a calibrator configured to receive the logging tool. The Z-transmitter coil and the Z-receiver coil may be located on separate subs that are detachable from one another.
摘要翻译：一种用于校准多部件感应测井工具的装置和方法。该方法可以包括将Z-发射器线圈定向为与至少一个Z-接收器线圈基本上正交，定位设置在测井工具上的X发射器线圈，使得X发射器线圈基本上平行于导电表面; 包括测量工具的Z发射器线圈，X发射器线圈和至少一个Z轴接收器线圈，其具有校准器的至少一个导电回路; 并使用校准器校准测井工具。该装置可以包括被配置为接收测井工具的校准器。 Z发射器线圈和Z-接收器线圈可以位于可彼此分离的分离的子系统上。

62. 发明授权

US07629792B2 Correction of misalignment of antennas in a downhole logging tool 有权
标题翻译：校正井下测井工具中天线的未对准
公开(公告)号：US07629792B2
公开(公告)日：2009-12-08
申请号：US11929238
申请日：2007-10-30
申请人： Luis M. Pelegri , Stanislav W. Forgang , Michael S. Crosskno
发明人： Luis M. Pelegri , Stanislav W. Forgang , Michael S. Crosskno
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： Misalignment of the transmitter and receiver coils of an induction logging tool is determined by positioning the logging tool with a coil axially encompassing the transmitter coil and/or the receiver coil, and activating the transmitter at a plurality of rotational angles.
摘要翻译：感应测井工具的发射器和接收器线圈的不对准通过将测井工具定位在轴向包围发射器线圈和/或接收器线圈的线圈上并以多个旋转角度激活发射机来确定。

63. 发明授权

US07199586B2 Method and apparatus for accurately measuring properties of a formation 失效
标题翻译：精确测量地层特性的方法和装置
公开(公告)号：US07199586B2
公开(公告)日：2007-04-03
申请号：US10841397
申请日：2004-05-07
申请人： Otto N. Fanini , Stanislav W. Forgang , Michael S. Crosskno
发明人： Otto N. Fanini , Stanislav W. Forgang , Michael S. Crosskno
IPC分类号： G01N3/10
CPC分类号： G01V3/28
摘要： A transverse induction logging tool having a transmitter and receiver for downhole sampling of formation properties, the tool having a symmetrical shielded split-coil transmitter coil and a bucking coil interposed between the split transmitter coils to reduce coupling of the transmitter time varying magnetic field into the receiver. The tool provides symmetrical shielding of the coils and grounding at either the transmitter or receiver end only to reduce coupling of induced currents into the received signal. The tool provides an insulator between receiver electronics and the conductive receiver housing having contact with conductive wellbore fluid, to reduce parasitic current flowing in a loop formed by the upper housing, feed through pipe, lower housing and wellbore fluid adjacent the probe housing or mandrel. An internal verification loop is provided to track changes in transmitter current in the real and quadrature component of the received data signal. A galvanic electrode is housed in the same mandrel with the induction logging receiver and transmitter.
摘要翻译：一种具有发射器和接收器的横向感应测井工具，用于对地层特性进行井下取样，该工具具有对称的屏蔽分离线圈发射器线圈和插入分离的发射器线圈之间的降压线圈，以减少发射机时变磁场的耦合接收器。该工具在发射机或接收机端提供线圈的对称屏蔽和接地，以减少感应电流与接收信号的耦合。该工具在接收器电子设备和与导电井眼流体接触的导电接收器壳体之间提供绝缘体，以减少在由上壳体形成的环路中流动的寄生电流，通过管道，下壳体和邻近探针壳体或心轴的井孔流体供给。提供内部验证循环以跟踪接收数据信号的实数和正交分量中发射机电流的变化。电感电极与感应测井接收器和变送器一起安装在相同的心轴上。

64. 发明授权

US06603309B2 Active signal conditioning circuitry for well logging and monitoring while drilling nuclear magnetic resonance spectrometers 有权
公开(公告)号：US06603309B2
公开(公告)日：2003-08-05
申请号：US09862793
申请日：2001-05-21
申请人： Stanislav W. Forgang , Zinovy B. Krugliak
发明人： Stanislav W. Forgang , Zinovy B. Krugliak
IPC分类号： G01V300
CPC分类号： G01R33/36 , G01N24/081 , G01V3/32
摘要： NMR transmitter/receiver antenna active signal conditioning circuitry that enables receiver antenna circuit protection from high voltage RF transmitter pulses, provides energy dumping for the entire antenna in successive stages and eliminates re-tuning during sweeping of the antenna frequency.

65. 发明授权

US06586939B1 Method and apparatus for reducing the effects of parasitic and galvanic currents in a resistivity measuring tool 失效
标题翻译：用于减小电阻率测量工具中寄生电流和电流的影响的方法和装置
公开(公告)号：US06586939B1
公开(公告)日：2003-07-01
申请号：US09471289
申请日：1999-12-24
申请人： Otto N. Fanini , Stanislav W. Forgang , Michael S. Crosskno
发明人： Otto N. Fanini , Stanislav W. Forgang , Michael S. Crosskno
IPC分类号： G01V310
CPC分类号： G01V3/28
摘要： A transverse induction logging tool having a transmitter and receiver for downhole sampling of formation properties, the tool having a symmetrical shielded split-coil transmitter coil and a bucking coil interposed between the split transmitter coils to reduce coupling of the transmitter time varying magnetic field into the receiver. The tool provides symmetrical shielding of the coils and grounding at either the transmitter or receiver end only to reduce coupling of induced currents into the received signal. The tool provides an insulator between receiver electronics and the conductive receiver housing having contact with conductive wellbore fluid, to reduce parasitic current flowing in a loop formed by the upper housing, feed through pipe, lower housing and wellbore fluid adjacent the probe housing or mandrel. An internal verification loop is provided to track changes in transmitter current in the real and quadrature component of the received data signal. A galvanic electrode is housed in the same mandrel with the induction logging receiver and transmitter.
摘要翻译：一种具有发射器和接收器的横向感应测井工具，用于对地层特性进行井下取样，该工具具有对称的屏蔽分离线圈发射器线圈和插入分离的发射器线圈之间的降压线圈，以减少发射机时变磁场的耦合接收器。该工具在发射机或接收机端提供线圈的对称屏蔽和接地，以减少感应电流与接收信号的耦合。该工具在接收器电子设备和与导电井眼流体接触的导电接收器壳体之间提供绝缘体，以减少在由上壳体形成的环路中流动的寄生电流，通过管道，下壳体和邻近探针壳体或心轴的井孔流体供给。提供内部验证循环以跟踪接收数据信号的实数和正交分量中发射机电流的变化。电感电极与感应测井接收器和变送器一起安装在相同的心轴上。

66. 发明授权

US10585205B2 Active damping for multi-frequency NMR logging tools 有权
公开(公告)号：US10585205B2
公开(公告)日：2020-03-10
申请号：US15874428
申请日：2018-01-18
申请人： Marc Stephen Ramirez , Stanislav W. Forgang
发明人： Marc Stephen Ramirez , Stanislav W. Forgang
IPC分类号： G01V3/32 , G01R33/36 , G01N24/08
摘要： An apparatus for performing a nuclear magnetic resonance (NMR) experiment in a borehole penetrating the earth includes: a carrier configured to be conveyed through the borehole; an antenna assembly disposed on the carrier and configured to receive an NMR signal; and an active gain circuit having an input coupled to the antenna and configured to apply gain to the received NMR signal and to provide an output signal comprising NMR experiment data. The apparatus also includes a feedback circuit configured to feed the output signal back to the input of the active gain circuit; wherein the signal fed back to the input of the active gain circuit is out of phase with the received NMR signal and the feedback circuit provides an electrical quality factor Q value of an antenna assembly that is less than the electrical quality factor Q value of the antenna assembly without the feedback circuit.

67. 发明授权

US09556726B2 Use of a fractal antenna in array dielectric logging 有权
$Use of a fractal antenna in array dielectric logging$
标题翻译：在阵列介质测井中使用分形天线
公开(公告)号：US09556726B2
公开(公告)日：2017-01-31
申请号：US14280037
申请日：2014-05-16
申请人： Babak Kouchmeshky , Stanislav W. Forgang , Rashid W. Khokhar
发明人： Babak Kouchmeshky , Stanislav W. Forgang , Rashid W. Khokhar
IPC分类号： G01V3/00 , E21B47/12 , G01V3/12 , E21B49/00 , G01V3/26 , G01V3/30 , E21B47/01 , G01V3/28
CPC分类号： E21B47/122 , E21B47/011 , E21B49/00 , G01V3/12 , G01V3/26 , G01V3/28 , G01V3/30
摘要： An apparatus for estimating a property of an earth formation includes: a carrier configured to be conveyed through a borehole penetrating an earth formation; a first fractal-shaped antenna element disposed on the carrier and configured to at least one of transmit electromagnetic energy into the formation and receive electromagnetic energy from the formation; and a second fractal-shaped antenna element electrically connected to the first fractal-shaped antenna element at a connection and configured to at least one of transmit electromagnetic energy into the formation and receive electromagnetic energy from the formation; wherein the second fractal-shaped antenna element is substantially a mirror image of the first fractal antenna element with respect to a reflection about the connection.
摘要翻译：用于估计地球物理性质的装置包括：构造成通过穿透地层的钻孔传送的载体; 第一分形状天线元件，其设置在所述载体上并且被配置为将所述电磁能量发射到所述地层中并从所述地层接收电磁能中的至少一个; 以及第二分形状天线元件，其在连接处电连接到所述第一分形天线元件，并且被配置为向所述地层中传输电磁能量中的至少一个并且接收来自所述地层的电磁能量; 其中所述第二分形天线元件相对于关于所述连接的反射基本上是所述第一分形天线元件的镜像。

68. 发明授权

US09223047B2 Formation resistivity measurements using phase controlled currents 有权
标题翻译：使用相位控制电流的地层电阻率测量
公开(公告)号：US09223047B2
公开(公告)日：2015-12-29
申请号：US13359581
申请日：2012-01-27
申请人： Leonty A. Tabarovsky , Stanislav W. Forgang
发明人： Leonty A. Tabarovsky , Stanislav W. Forgang
IPC分类号： G01V3/24 , E21B47/10
CPC分类号： G01V3/24 , E21B47/102
摘要： Disclosed is an apparatus for estimating a property of an earth formation penetrated by a borehole. The apparatus includes a carrier configured to be conveyed through the borehole and having a first transmitter electrode configured to inject electrical current into the formation and a first measurement electrode configured to receive electrical current for measurement due to the current injection in order to estimate the property of the earth formation. A controller is configured to determine a phase difference between injected electrical current and received electrical current. A first bucker amplifier is coupled to the first measurement electrode and configured to apply a voltage to the first measurement electrode based on the determined phase difference in order for a phase of current received by the first measurement electrode to be substantially in phase with the current injected by the first transmitter electrode.
摘要翻译：公开了一种用于估计钻孔穿透的地层的性质的装置。该装置包括：载体，被构造成通过钻孔传送，并具有配置成将电流注入到地层中的第一发射器电极;以及第一测量电极，其被配置为接收由于电流注入而进行测量的电流，以便估计地球形成。控制器被配置为确定注入的电流和接收的电流之间的相位差。第一压差放大器耦合到第一测量电极，并且被配置为基于所确定的相位差向第一测量电极施加电压，以使由第一测量电极接收的电流的相位与注入的电流基本相同由第一发射机电极。

69. 发明授权

US08847600B2 Use of autotransformer-like antennas for downhole applications 有权
标题翻译：使用自耦变压器式天线进行井下应用
公开(公告)号：US08847600B2
公开(公告)日：2014-09-30
申请号：US13035098
申请日：2011-02-25
申请人： Jack Signorelli , Samuel R. Bell , Stanislav W. Forgang , Sheng Fang
发明人： Jack Signorelli , Samuel R. Bell , Stanislav W. Forgang , Sheng Fang
IPC分类号： G01V3/00 , G01V3/12 , G01V3/30 , G01V3/28
CPC分类号： G01V3/12 , G01V3/28 , G01V3/30
摘要： An apparatus for estimating a property of an earth formation penetrated by a borehole, apparatus including: a carrier configured to be conveyed through the borehole; a transducer disposed at the carrier and configured to transmit and/or receive electromagnetic energy into and/or from the earth formation to estimate the property; wherein the transducer includes a plurality of inductively coupled elements in a series, each element configured to transmit and/or receive electromagnetic energy and at least a first connection to a first element in the plurality and a second connection to a second element in the plurality with at least one of the first element and the second element being disposed between end transducer elements in the series.
摘要翻译：一种用于估计由钻孔渗透的地层的性质的装置，包括：被构造成通过钻孔传送的载体; 设置在所述载体处并被配置为向所述地层中的和/或从所述地层发射和/或接收电磁能以估计所述性质的换能器; 其中所述换能器包括多个串联的感应耦合元件，每个元件被配置为传输和/或接收电磁能量，并且至少第一连接到所述多个中的第一元件，以及与所述多个元件中的第二元件的第二连接，第一元件和第二元件中的至少一个设置在串联的端部换能器元件之间。

70. 发明授权

US08400158B2 Imaging in oil-based mud by synchronizing phases of currents injected into a formation 有权
标题翻译：通过同步注入地层的电流来形成油基泥浆
公开(公告)号：US08400158B2
公开(公告)日：2013-03-19
申请号：US13280755
申请日：2011-10-25
申请人： Leonty A. Tabarovsky , Stanislav W. Forgang
发明人： Leonty A. Tabarovsky , Stanislav W. Forgang
IPC分类号： G01V3/08 , G01V3/18
CPC分类号： G01V3/24
摘要： Disclosed is an apparatus for estimating a property of an earth formation penetrated by a borehole. The apparatus includes a carrier configured to be conveyed through the borehole. A first transmitter electrode and a second transmitter electrode are disposed at the carrier and configured to inject an electrical current into the earth formation. A first measurement electrode and a second measurement electrode are disposed at the carrier and configured to measure the electrical current to estimate the property of the earth formation. A first bucker amplifier is coupled to the first measurement electrode and a second bucker amplifier is coupled to the second measurement electrode, wherein the first and second bucker amplifiers are configured to equalize electrical potentials of areas in front of the first and second measurement electrodes.
摘要翻译：公开了一种用于估计钻孔穿透的地层的性质的装置。该装置包括构造成通过钻孔传送的载体。第一发射器电极和第二发射器电极设置在载体处并且被配置为将电流注入地层中。第一测量电极和第二测量电极设置在载体处并且被配置为测量电流以估计地层的性质。第一压差放大器耦合到第一测量电极，并且第二压控放大器耦合到第二测量电极，其中第一和第二压摆放大器被配置为均衡第一和第二测量电极前面区域的电位。

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