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1. 发明申请

WO2011129990A2 THREE-COIL SYSTEM WITH SHORT NONCONDUCTIVE INSERTS FOR TRANSIENT MWD RESISTIVITY MEASUREMENTS 审中-公开
标题翻译：具有瞬态MWD电阻测量的短路非线性插件的三线圈系统
公开(公告)号：WO2011129990A2
公开(公告)日：2011-10-20
申请号：PCT/US2011/030163
申请日：2011-03-28
申请人： BAKER HUGHES INCORPORATED , ITSKOVICH, Gregory, B. , REIDERMAN, Arcady
发明人： ITSKOVICH, Gregory, B. , REIDERMAN, Arcady
IPC分类号： G01V3/20 , G01V3/34 , E21B47/00
CPC分类号： G01V3/28 , E21B47/00 , G01V3/30 , G01V11/002
摘要： A three-coil bucking system is used for determination of a formation resistivity property ahead of the drill bit. The conductive drill pipe is provided with non- conductive inserts in the proximity of at least one transmitter and at least two receivers. Transient electromagnetic signals are processed to give the estimate of the resistivity property and for geosteering.
摘要翻译：三线圈抗弯系统用于确定钻头前的地层电阻率特性。导电钻管在至少一个发射器和至少两个接收器附近设置有非导电插入件。处理瞬态电磁信号以给出电阻率性质和地质导向的估计。

2. 发明申请

WO2010057070A3 METHOD OF DEEP RESISTIVITY TRANSIENT MEASURMENT WHILE DRILLING 审中-公开
公开(公告)号：WO2010057070A3
公开(公告)日：2010-05-20
申请号：PCT/US2009/064524
申请日：2009-11-16
申请人： BAKER HUGHES INCORPORATED , REIDERMAN, Arcady , ITSKOVICH, Gregory, B.
发明人： REIDERMAN, Arcady , ITSKOVICH, Gregory, B.
IPC分类号： E21B47/022 , G01V3/26 , G01V3/08
摘要： A transient electromagnetic signal is recorded in an earth formation in the presence of a pipe having a finite conductivity. A portion of the signal dominated by the pipe signal is analyzed to determine a functional representation, extrapolated back to a time interval where the formation signal is present and subtracted from the recorded signal to provide a corrected signal.

3. 发明申请

WO2012030768A3 DTEM WITH SHORT SPACING FOR DEEP, AHEAD OF THE DRILL BIT MEASUREMENTS 审中-公开
公开(公告)号：WO2012030768A3
公开(公告)日：2012-03-08
申请号：PCT/US2011/049650
申请日：2011-08-30
申请人： BAKER HUGHES INCORPORATED , ITSKOVICH, Gregory, B. , REIDERMAN, Arcady , RABINOVICH, Michael, B. , MARTAKOV, Sergey , IOMDINA, Emma
发明人： ITSKOVICH, Gregory, B. , REIDERMAN, Arcady , RABINOVICH, Michael, B. , MARTAKOV, Sergey , IOMDINA, Emma
IPC分类号： G01V3/26 , E21B47/00 , G06F19/00
摘要： A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A processor estimates the distance to a resistivity interface using a signal produced by a receiver on the BHA. The transmitter-receiver distance may be less than 1m. The estimation of the distance is done in real time using a thin conductive sheet approximation.

4. 发明申请

WO2011014333A3 METHOD AND APPARATUS FOR GALVANIC MULTI-FREQUENCY FORMATION RESISTIVITY IMAGING 审中-公开
公开(公告)号：WO2011014333A3
公开(公告)日：2011-02-03
申请号：PCT/US2010/041055
申请日：2010-07-06
申请人： BAKER HUGHES INCORPORATED , ITSKOVICH, Gregory, B. , BESPALOV, Alexandre, N.
发明人： ITSKOVICH, Gregory, B. , BESPALOV, Alexandre, N.
IPC分类号： G01V3/24 , G01V3/34 , G01V3/18
摘要： A formation measurement and processing technique which reduces the effects of standoff between a resistivity tool and a borehole wall where the resistivity tool utilizes capacitive coupling between the tool and the formation to obtain resistivity data useful to generate a resistivity image of the formation. Reduction of standoff effects is achieved through the use of multi-frequency, phase sensitive measurements to identify a measured resonance frequency that may be used to produce an image that utilizes measurements least affected by the tool standoff and unknown or unspecified inductance of the tool. Reduction of standoff effects are the most pronounced in the case of the low resistivity formations and oil-based, low-conductive drilling fluids.

5. 发明申请

WO2009117507A3 ELECTROMAGNETIC AND MAGNETOSTATIC SHIELD TO PERFORM MEASUREMENTS AHEAD OF THE DRILL BIT 审中-公开
公开(公告)号：WO2009117507A3
公开(公告)日：2009-09-24
申请号：PCT/US2009/037549
申请日：2009-03-18
申请人： BAKER HUGHES INCORPORATED , ITSKOVICH, Gregory, B. , CHEMALI, Roland, E. , WANG, Tsili
发明人： ITSKOVICH, Gregory, B. , CHEMALI, Roland, E. , WANG, Tsili
IPC分类号： G01V3/08 , G01V3/26 , G01V3/38 , G01V3/10
摘要： A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A pair of receivers on the BHA receive signals that are indicative of formation resistivity and distances to bed boundaries. A time dependent calibration factor or a time-independent calibration factor may be used to combine the two received signals and estimate the distance to bed boundaries that are unaffected by the drill conductive body. Further improvement can be obtained by using copper shielding.

6. 发明申请

WO2007024533A3 HIGH RESOLUTION RESISTIVITY EARTH IMAGER 审中-公开
公开(公告)号：WO2007024533A3
公开(公告)日：2007-03-01
申请号：PCT/US2006/031638
申请日：2006-08-14
申请人： BAKER HUGHES INCORPORATED , BESPALOV, Alexandre, N. , ITSKOVICH, Gregory, B.
发明人： BESPALOV, Alexandre, N. , ITSKOVICH, Gregory, B.
IPC分类号： G01V3/00
摘要： Phase-sensitive measurements are made by a resistivity imaging tool in a borehole having non-conductive mud in a conductive earth formation at a plurality of frequencies. From the phase sensitive measurements, the formation resistivity can be determined with higher sensitivity than is possible with the single frequency measurements. Tool standoff can also be determined from a knowledge of the mud resistivity and/or dielectric constant. Formation resistivity may also be determined when the effect of formation capacitance cannot be ignored.

7. 发明申请

WO2011035131A2 TDEM FORWARD FOCUSING SYSTEM FOR DOWNHOLE USE 审中-公开
标题翻译： TDEM前向聚焦系统用于井下使用
公开(公告)号：WO2011035131A2
公开(公告)日：2011-03-24
申请号：PCT/US2010/049294
申请日：2010-09-17
申请人： BAKER HUGHES INCORPORATED , ITSKOVICH, Gregory, B.
发明人： ITSKOVICH, Gregory, B.
IPC分类号： E21B49/00 , E21B47/00 , E21B49/08
CPC分类号： G01V1/42
摘要： A method and apparatus for estimating a parameter of interest of an earth formation ahead of a carrier within borehole. The method including estimating one or more functions based on received signals that may reduce the sum of the signals received by a first receiver, and estimating the parameter of interest based on signals received by one or more additional receivers by applying the one or more functions and, if necessary, a defocusing factor, such that reception of information from downhole of a selected downhole location is enhanced relative to reception of information uphole from the selected location. The apparatus including two or more transmitters, two or more receivers, and a processor to estimate one or more functions, and, based on these functions, the parameter of interest.
摘要翻译：一种用于估计钻孔内的载体之前的地层的感兴趣参数的方法和装置。该方法包括基于接收到的信号估计一个或多个功能，所述接收信号可以减少由第一接收机接收的信号的总和，并且基于由一个或多个附加接收机接收的信号来估计感兴趣的参数，如果需要，散焦因子，使得相对于从所选择的位置的井的信息的接收，增加了从所选择的井下位置的井下接收信息。该装置包括两个或多个发射器，两个或更多个接收器，以及用于估计一个或多个功能的处理器，以及基于这些功能，所关注的参数。

8. 发明申请

WO2010096802A2 METHOD FOR ACCENTUATING SIGNAL FROM AHEAD OF THE BIT 审中-公开
标题翻译：从位的前端识别信号的方法
公开(公告)号：WO2010096802A2
公开(公告)日：2010-08-26
申请号：PCT/US2010/025033
申请日：2010-02-23
申请人： BAKER HUGHES INCORPORATED , GEORGI, Daniel, T. , ITSKOVICH, Gregory, B. , RABINOVICH, Michael, B. , TABAROVSKY, Leonty, A.
发明人： GEORGI, Daniel, T. , ITSKOVICH, Gregory, B. , RABINOVICH, Michael, B. , TABAROVSKY, Leonty, A.
IPC分类号： G01V11/00 , G01V3/18 , G01V5/04 , G01V1/40 , E21B47/00
CPC分类号： G01V3/28 , G01V11/00 , G01V2210/6163 , G01V2210/6167
摘要： A method for estimating a property of a portion of an earth formation ahead of a borehole penetrating the formation, the method includes: conveying a logging tool through the borehole; receiving one or more first signals from a previous depth of the logging tool; constructing a model of the earth formation using the one or more first signals; predicting one or more second signals from the portion of the earth formation ahead of the borehole using the model; receiving one or more third signals from the portion of the earth formation ahead of the borehole; calculating a difference between the one or more third signals and the one or more second signals; and estimating the property from the difference.
摘要翻译：一种用于估计穿过地层的井眼之前的地层的一部分的性质的方法，所述方法包括：将测井工具传送通过所述钻孔; 从测井工具的先前深度接收一个或多个第一信号; 使用所述一个或多个第一信号构造地层的模型; 使用该模型预测来自钻孔前方的地层部分的一个或多个第二信号; 从钻孔前面的地层部分接收一个或多个第三信号; 计算所述一个或多个第三信号和所述一个或多个第二信号之间的差; 并从差异估算属性。

9. 发明申请

WO2009120790A3 A FOUR-TERMINAL ELECTRIC IMAGER FOR RESISTIVE MUDS WITH LOCALIZED CURRENT CONTROL 审中-公开
公开(公告)号：WO2009120790A3
公开(公告)日：2009-10-01
申请号：PCT/US2009/038267
申请日：2009-03-25
申请人： BAKER HUGHES INCORPORATED , BESPALOV, Alexandre, N. , BEARD, David, R. , GOLD, Randy , ITSKOVICH, Gregory, B. , WANG, Tsill
发明人： BESPALOV, Alexandre, N. , BEARD, David, R. , GOLD, Randy , ITSKOVICH, Gregory, B. , WANG, Tsill
IPC分类号： G01V3/20 , G01V3/38 , G01V3/02 , E21B49/08
摘要： An apparatus for imaging a subsurface material traversed by a borehole, the apparatus including an imaging pad deployed by a logging instrument, the pad including a plurality of measuring sets, each measuring set including a first current injector electrode, a second current injector electrode, a pair of sensor electrodes disposed between the first current injector electrode and the second current injector electrode, and an output for coupling to an electronics unit adapted for producing the imaging of the subsurface material.

10. 发明申请

WO2008063848A1 METHOD FOR COMPENSATING DIELECTRIC ATTENUATION IN DOWNHOLE GALVANIC MEASUREMENTS 审中-公开
标题翻译：用于补偿下行电位测量中的电介质衰减的方法
公开(公告)号：WO2008063848A1
公开(公告)日：2008-05-29
申请号：PCT/US2007/083444
申请日：2007-11-02
申请人： BAKER HUGHES INCORPORATED , FORGANG, Stanislav, W. , ITSKOVICH, Gregory, B. , GOLD, Randy , CASTILLO, Homero
发明人： FORGANG, Stanislav, W. , ITSKOVICH, Gregory, B. , GOLD, Randy , CASTILLO, Homero
IPC分类号： G01V1/40
CPC分类号： G01V3/24
摘要： A logging tool used in a borehole having non-conductive mud. The tool includes a known inductance in series with an electrode. The quality factor of a circuit that includes the electrode, the inductance and the earth formation is indicative of the resistivity of the formation. The quality factor may be determined using either a plurality of signals or by measuring a transient response.
摘要翻译：用于具有非导电泥浆的钻孔中的测井工具。该工具包括与电极串联的已知电感。包括电极，电感和地球形成的电路的品质因子表示地层的电阻率。质量因子可以使用多个信号或通过测量瞬态响应来确定。

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