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71. 发明授权

US07629793B2 Correction of misalignment of antennas in a logging tool 失效
标题翻译：在测井工具中校正天线的未对准
公开(公告)号：US07629793B2
公开(公告)日：2009-12-08
申请号：US11930609
申请日：2007-10-31
申请人： Luis M. Pelegri , Stanislav W. Forgang
发明人： Luis M. Pelegri , Stanislav W. Forgang
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： Misalignment of the transmitter and receiver antennas of an induction logging tool is determined by positioning the logging tool with a conducting loop magnetically coupled to the transmitter antenna and/or the receiver antenna, 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天线的未对准通过使用磁耦合到发射器天线和/或接收器天线的导电回路定位测井工具，并以多个旋转角度来激活发射机来确定。

72. 发明申请

US20090230967A1 Downhole Spread Spectrum Induction Instruments 有权
标题翻译：井下扩频感应仪
公开(公告)号：US20090230967A1
公开(公告)日：2009-09-17
申请号：US12048966
申请日：2008-03-14
申请人： Stanislav W. Forgang , Roland E. Chemali
发明人： Stanislav W. Forgang , Roland E. Chemali
IPC分类号： G01V3/26 , G01V3/38
CPC分类号： G01V3/28
摘要： A plurality of transmitters on a logging tool are activated simultaneously at substantially the same frequency. When the transmitter outputs are phase-modulated using a mutually orthogonal set of modulating functions, it is possible to recover, from the signal at each receiver, a response corresponding to each of the transmitters.
摘要翻译：在测井工具上的多个发射器以基本上相同的频率同时被激活。当使用相互正交的调制函数集发射机输出进行相位调制时，可以从每个接收机处的信号中恢复对应于每个发射机的响应。

73. 发明授权

US07437251B2 Correction of sensor non-equipotentiality in a resistivity imaging device 有权
标题翻译：电阻率成像装置中传感器非等电位的校正
公开(公告)号：US07437251B2
公开(公告)日：2008-10-14
申请号：US11653542
申请日：2007-01-16
申请人： Tsili Wang , Stanislav W. Forgang
发明人： Tsili Wang , Stanislav W. Forgang
IPC分类号： G01V3/00
CPC分类号： G01V3/24
摘要： A method for correcting data from at least one sensor electrode in a sensor includes determining a potential difference (V) between two electrodes; from the potential difference (V), determining a by-pass current (Ic) for the at least one sensor electrode; and from the by-pass current (Ic) and a measured current (I), determining a corrected current (J) for the at least one sensor electrode. A computer program product and other embodiments are provided.
摘要翻译：用于从传感器中的至少一个传感器电极校正数据的方法包括确定两个电极之间的电位差（V）; 从所述电位差（V）中确定用于所述至少一个传感器电极的旁路电流（I SUB> C ）; 并且根据旁路电流（I SUB）和测量电流（I），确定至少一个传感器电极的校正电流（J）。提供了计算机程序产品和其他实施例。

74. 发明申请

US20080224706A1 Use of Electrodes and Multi-Frequency Focusing to Correct Eccentricity and Misalignment Effects on Transversal Induction Measurements 审中-公开
标题翻译：使用电极和多频聚焦来校正偏心和偏心对横向感应测量的影响
公开(公告)号：US20080224706A1
公开(公告)日：2008-09-18
申请号：US12125784
申请日：2008-05-22
申请人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang
发明人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang
IPC分类号： G01V3/30
CPC分类号： G01V3/28
摘要： A multicomponent induction logging tool uses a nonconducting mandrel. A central conducting member including wires that electrically connect at least one of the antennas to another of the antennas. Electrodes disposed about the transmitter antenna form a conductive path through a borehole fluid to the central conducting member.
摘要翻译：多组分感应测井仪使用不导电心轴。一种中心导电构件，包括将至少一个天线电连接到另一个天线的导线。围绕发射器天线布置的电极形成穿过井眼流体到中心导电构件的导电路径。

75. 发明授权

US07420367B2 High-frequency induction imager with concentric coils for MWD and wireline applications 有权
标题翻译：高频感应成像仪，同轴线圈用于MWD和有线应用
公开(公告)号：US07420367B2
公开(公告)日：2008-09-02
申请号：US11220440
申请日：2005-09-07
申请人： Alexandre Bespalov , Michael B. Rabinovich , Leonty A. Tabarovsky , Stanislav W. Forgang
发明人： Alexandre Bespalov , Michael B. Rabinovich , Leonty A. Tabarovsky , Stanislav W. Forgang
IPC分类号： G01V3/00
CPC分类号： E21B47/0002 , G01V3/18 , G01V3/28 , G01V3/30
摘要： An induction logging tool having concentric transmitter and receiver antennas can be used to make measurements of earth formations at frequencies up to 500 MHz. The antennas may be mounted on the mandrel of a bottomhole assembly for MWD applications, or may be pad mounted for wireline applications. Litz winding is used in the coils to minimize eddy current losses. The antennas may be formed on a flexible circuit board.
摘要翻译：具有同心发射器和接收器天线的感应测井工具可用于在高达500MHz的频率下测量地层。天线可以安装在用于MWD应用的井底组件的心轴上，或者可以用于有线应用的垫安装。线圈中使用Litz绕组以最小化涡流损耗。天线可以形成在柔性电路板上。

76. 发明授权

US07319331B2 Two loop calibrator 失效
标题翻译：双回路校准器
公开(公告)号：US07319331B2
公开(公告)日：2008-01-15
申请号：US11340785
申请日：2006-01-26
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： G01V3/18 , 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。

77. 发明授权

US07268556B2 Method and apparatus for a multi-component induction instrument measuring system for geosteering and formation resistivity data interpretation in horizontal, vertical and deviated wells 有权
标题翻译：用于水平，垂直和偏斜井的地质导向和地层电阻率数据解释的多分量感应仪测量系统的方法和装置
公开(公告)号：US07268556B2
公开(公告)日：2007-09-11
申请号：US10824093
申请日：2004-04-14
申请人： Otto N. Fanini , Stanislav W. Forgang , Berthold Kriegshauser , Liming Yu
发明人： Otto N. Fanini , Stanislav W. Forgang , Berthold Kriegshauser , Liming Yu
IPC分类号： G01V3/18
CPC分类号： G01V3/28
摘要： An improved induction tool for formation resistivity evaluations. The tool provides electromagnetic transmitters and sensors suitable for transmitting and receiving magnetic fields in radial directions that are orthogonal to the tool's longitudinal axis with minimal susceptibility to errors associated with parasitic eddy currents induced in the metal components surrounding the transmitter and receiver coils.Various transmitter receiver combinations are provided to select sensitivity to a desired reservoir formation properties, for example, different orientations xy, xz, yz, 20-40, 20-90, and combinations, such as, Symmetric-symmetric; Asymmetric-symmetric; and Asymmetric-asymmetric. Measurements made with a multi-component logging instrument when used in a substantially horizontal, vertical or deviated borehole in earth formations are diagnostic of the direction of resistive beds relative to the position of the borehole.
摘要翻译：改进的地层电阻率评估感应工具。该工具提供电磁发射器和传感器，适用于在与工具的纵向轴线正交的径向方向上发射和接收磁场，对与发射器和接收器线圈周围的金属部件中感应的寄生涡流有关的误差的影响最小。提供各种发射器接收器组合以选择对期望的储层形成性质的灵敏度，例如不同取向xy，xz，yz，20-40,20-90以及诸如对称对称的组合; 不对称; 和非对称不对称。使用多组分测井仪器在地层中基本上水平，垂直或偏斜的钻孔中进行的测量是电阻床相对于钻孔位置的方向的诊断。

78. 发明授权

US06677756B2 Multi-component induction instrument 失效
标题翻译：多组分感应仪
公开(公告)号：US06677756B2
公开(公告)日：2004-01-13
申请号：US09922393
申请日：2001-08-03
申请人： Otto Fanini , Stanislav W. Forgang
发明人： Otto Fanini , Stanislav W. Forgang
IPC分类号： G01V318
CPC分类号： G01V3/28
摘要： An improved induction tool for formation resistivity evaluations. The tool provides electromagnetic transmitters and sensors suitable for transmitting and receiving magnetic fields in radial directions that are orthogonal to the tool's longitudinal axis with minimal susceptibility to errors associated with parasitic eddy currents induced in the metal components surrounding the transmitter and receiver coils. The present invention provides increased effective tool surface impedance by increasing self-inductance of the paths in which induced eddy currents flow on the surface of the multi-component induction instruments. The tool enables downhole tool designers to build more effective and better-protected radial induction arrays for existing and future downhole instruments operating in the frequency and/or time domains. In this case the array measurement results contain information primarily about the formation's vertical resistivity. The tool makes it possible to combine radial arrays with coaxial arrays that conventionally measure horizontal formation resistivity. This combination enables obtaining a full resistivity tensor to evaluate formation resistivity anisotropy. The tool provides a composite non-conductive housing to reduce or even avoid the effects of parasitic eddy currents flowing on the tool surface. The tool provides a non-magnetic housing that is conductive which reduces the effects of conductive materials near coils and, primarily, the receiver. The tool provides a non-conductive coating is placed over the housing to prevent high frequency eddy currents from leaking from the housing in the conductive mud of the adjacent wellbore and returning to the housing.
摘要翻译：改进的地层电阻率评估感应工具。该工具提供电磁发射器和传感器，适用于在与工具的纵向轴线正交的径向方向上发射和接收磁场，对与发射器和接收器线圈周围的金属部件中感应的寄生涡流有关的误差的影响最小。本发明通过增加感应涡流在多部件感应仪器的表面上流动的路径的自感来提供增加的有效工具表面阻抗。该工具使井下工具设计人员能够为在频率和/或时域工作的现有和未来的井下仪器构建更有效和更好保护的径向感应阵列。在这种情况下，阵列测量结果包含主要关于地层垂直电阻率的信息。该工具使得可以将径向阵列与常规测量水平地层电阻率的同轴阵列组合。这种组合使得能够获得全电阻率张量以评估地层电阻率各向异性。该工具提供复合非导电外壳，以减少或甚至避免流入工具表面的寄生涡流的影响。该工具提供导电的非磁性壳体，其减少线圈附近的导电材料的影响，主要是接收器的影响。该工具提供非导电涂层放置在壳体上以防止高频涡流从相邻井眼的导电泥浆中的壳体泄漏并返回到壳体。

79. 发明授权

US06627873B2 Down hole gas analyzer method and apparatus 有权
公开(公告)号：US06627873B2
公开(公告)日：2003-09-30
申请号：US09836044
申请日：2001-04-16
申请人： Borislav J. Tchakarov , Rocco DiFoggio , Stanislav W. Forgang , Otto N. Fanini , Marcelo F. Civarolo , James C. Hunziker
发明人： Borislav J. Tchakarov , Rocco DiFoggio , Stanislav W. Forgang , Otto N. Fanini , Marcelo F. Civarolo , James C. Hunziker
IPC分类号： G01V800
CPC分类号： E21B49/08 , G01N21/3504 , G01N21/552 , G01V8/02
摘要： A logging while drilling and wire line system for analyzing the concentration of carbon dioxide or another substance, in a sample down hole in a bore hole. A chamber is filled with a sample that may be fluid, or condensate and gas. The interior chamber volume is selectably expandable for decompression of the sample. The sample may alternately be decompressed by allowing a sample at formation pressure to enter the chamber at a lower pressure, thereby decompressing the sample. A sensor measures the absorbance, transmittance or attenuated total reflectance of the infrared light. Mid and near infrared light is utilized to identify carbon dioxide, water and a plurality of hydrocarbons. A wiper cleans the transmitter and sensor between readings to reduce measurement error caused by fluid sample contamination.

80. 发明申请

US20190219726A1 ACTIVE DAMPING FOR MULTI-FREQUENCY NMR LOGGING TOOLS 审中-公开
公开(公告)号：US20190219726A1
公开(公告)日：2019-07-18
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
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.

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