-
公开(公告)号：US08942941B2
公开(公告)日：2015-01-27
申请号：US12899264
申请日：2010-10-06
CPC分类号： G01V3/26
摘要： An apparatus for modifying an output signal indicative of a downhole parameter that may include a carrier conveyable in a wellbore; a negative error compensator; and an output signal device. The negative error compensator may be configured to modify the output of the device to increase or decrease a characteristic of the output signal from the output signal device. Also, a method for modifying an output signal indicative of a downhole parameter that may include modifying a characteristic of an output signal produced by a output signal device in a wellbore using a negative error compensator.
摘要翻译： 一种用于修改指示井下参数的输出信号的装置，所述井下参数可以包括可在井眼中传送的载体; 负误差补偿器; 和输出信号装置。 负误差补偿器可以被配置为修改设备的输出以增加或减少来自输出信号装置的输出信号的特性。 另外，一种用于修改表示井下参数的输出信号的方法，该方法可以包括使用负误差补偿器来修改由井眼中的输出信号装置产生的输出信号的特性。
-
公开(公告)号：US20130027045A1
公开(公告)日：2013-01-31
申请号：US13359581
申请日：2012-01-27
IPC分类号： G01V3/02
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上同相 由第一发射机电极。
-
43.发明授权公开(公告)号：US07598741B2
公开(公告)日：2009-10-06
申请号：US11685271
申请日：2007-03-13
CPC分类号： G01V3/28
摘要： The present invention improves measurement of the formation induction response in the presence of the primary magnetic field generated by a logging tool's transmitter. A structure is provided having a new combination of electrical and mechanical design features which provide logging tool for internal calibration and checking of antenna performance and characteristics before during and after well logging operations.
摘要翻译： 本发明在由测井工具的发射器产生的初级磁场存在的情况下改进了地层感应响应的测量。 提供了具有电气和机械设计特征的新组合的结构，其提供用于内部校准的测井工具以及在测井操作期间和之后检查天线性能和特性。
-
44.发明授权Method and apparatus for a multi-component induction instrument measuring system for geosteering and formation resistivity data interpretation in horizontal, vertical and deviated wells 失效用于水平，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：US06900640B2
公开(公告)日：2005-05-31
申请号：US10214436
申请日：2002-08-07
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。
-
公开(公告)号：US06734675B2
公开(公告)日：2004-05-11
申请号：US10262548
申请日：2002-10-01
IPC分类号： G01N310
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。
-
46.发明授权
公开(公告)号：US06111409A
公开(公告)日：2000-08-29
申请号：US033104
申请日：1998-03-02
CPC分类号： G01N24/081 , G01V3/32
摘要： A method for characterizing a fluid sample withdrawn from an earth formation. The method includes performing nuclear magnetic resonant spin echo measurements on the fluid sample at a nuclear magnetic resonant frequency of carbon-13. Amplitudes of the spin echo measurements are summed. The summed measurements are spectrally analyzed. The fluid is characterized by determining whether aromatic hydrocarbons are present by measuring an amplitude of the spectrally analyzed spin echo measurements at about 130 part per million shift from the carbon-13 frequency. The fluid is also characterized by determining whether aliphatic hydrocarbons are present by measuring an amplitude of the spectrally analyzed spin echo measurements at about 30 parts per million frequency shift.
摘要翻译： 用于表征从地层中取出的流体样品的方法。 该方法包括在碳-13的核磁共振频率下对流体样品进行核磁共振自旋回波测量。 自旋回波测量的幅度相加。 对光谱进行光谱分析。 流体的特征在于通过测量从碳-13频率开始的大约130百万分之一的频谱分析的自旋回波测量的振幅来确定芳族烃是否存在。 流体的特征还在于通过以每百万次频移大约30个百分点测量频谱分析的自旋回波测量的幅度来确定脂族烃是否存在。
-
47.发明申请METHOD OF PHASE SYNCHRONIZATION OF MWD OR WIRELINE APPARATUS SEPARATED IN THE STRING 有权MWD或WIRELINE装置的相位同步方法公开(公告)号：US20130066557A1
公开(公告)日：2013-03-14
申请号：US13231517
申请日：2011-09-13
申请人： Stanislav W. Forgang
发明人： Stanislav W. Forgang
CPC分类号： G01V11/002
摘要： The present disclosure is related to apparatuses and methods for estimating a phase offset in earth formations. The method may include estimating the phase offset by comparing signals generated and received by a first sub, the second signal being transmitted by a second sub that has been synchronized by the signal generated by the first sub. The signals may be exchanged using a first antenna on the first sub and a second antenna on the second sub. The signals may use a selected frequency. Synchronization may take place without electrical communication between the first and second subs. The method may include compensating for a propagation delay in the signals using the phase offset. The method may include using a time stamp during the synchronization. The apparatus may include a first antenna and a second antenna on first and second subs, respectively, both configured to transmit and receive electromagnetic signals.
摘要翻译： 本公开涉及用于估计地层中的相位偏移的装置和方法。 该方法可以包括通过比较由第一子信号生成和接收的信号来估计相位偏移，第二信号由第二子信号发送，第二子信号已由第一子信号生成的信号同步。 可以使用第一子网上的第一天线和第二子网上的第二天线来交换信号。 信号可以使用选定的频率。 同步可以在第一和第二子站之间没有电气通信的情况下进行。 该方法可以包括使用相位偏移补偿信号中的传播延迟。 该方法可以包括在同步期间使用时间戳。 该装置可以包括第一和第二天线的第一天线和第二天线，分别被配置为发送和接收电磁信号。
-
48.发明申请Imaging in Oil-Based Mud by Synchronizing Phases of Currents Injected Into a Formation 有权通过同步注入地层的电流相，在油基泥浆中成像公开(公告)号：US20120274329A1
公开(公告)日：2012-11-01
申请号：US13280755
申请日：2011-10-25
IPC分类号： G01V3/20
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。
-
公开(公告)号：US07973532B2
公开(公告)日：2011-07-05
申请号：US12048966
申请日：2008-03-14
IPC分类号： G01V3/30
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。
-
公开(公告)号：US07726193B2
公开(公告)日：2010-06-01
申请号：US11862965
申请日：2007-09-27
CPC分类号： G01N29/2412 , B06B1/04 , G01N29/32
摘要： The electromagnetic acoustic transducer (EMAT) transducer disclosed herein is useful for the non-destructive analysis of objects. The transducer comprises a core having a winding and a coil disposed between the core and the object to be analyzed. One transducer can be used as a transmitter and another transducer as a receiver. Then selectively switching static magnetic field in either transmitter or receiver and processing data with and without static magnetic field allows for eliminating artifacts due to parasitic coupling between the transmitter/receiver pair. The switching of the static magnetic field can be implemented either by using electromagnet or a pair of permanent magnets where magnetization of one permanent magnet is reversed to provide cancellation of the static magnetic field.
摘要翻译： 本文公开的电磁声换能器（EMAT）换能器对于物体的非破坏性分析是有用的。 换能器包括具有绕组和设置在芯和待分析对象之间的线圈的芯。 一个传感器可以用作发射器，另一个传感器可以用作接收器。 然后，选择性地切换发射机或接收机中的静态磁场以及使用和不使用静态磁场的处理数据，可以消除由于发射机/接收机对之间的寄生耦合引起的伪影。 静磁场的切换可以通过使用电磁体或一对永磁体来实现，其中一个永磁体的磁化反转以提供静磁场的抵消。
-
-
-
-
-
-
-
-
-
搜索结果
91 条记录 (耗时 0.032 秒)
