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1.发明授权Using higher order harmonics to determine acoustic impedance of material behind borehole casings 有权使用更高阶谐波来确定钻孔套管后面的材料的声阻抗公开(公告)号：US08767506B2
公开(公告)日：2014-07-01
申请号：US13330676
申请日：2011-12-20
CPC分类号： G01V1/306 , E21B47/0005 , G01V1/50
摘要： An acoustic logging tool emits a wideband acoustic pulse toward an inside surface of a borehole casing and an acoustic response is received. The acoustic response is analyzed at one or more higher order harmonics of the thickness mode resonance of the casing to determine the acoustic impedance of the material behind the casing.
摘要翻译： 声学测井工具朝向钻孔套管的内表面发射宽带声脉冲，并且接收声响应。 在壳体的厚度模式谐振的一个或多个更高次谐波处分析声响应，以确定壳体后面的材料的声阻抗。
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2.发明申请Using Higher Order Harmonics to Determine Acoustic Impedance of Material Behind Borehole Casings 有权使用更高阶谐波来确定井筒壳后面的材料的阻抗公开(公告)号：US20130155812A1
公开(公告)日：2013-06-20
申请号：US13330676
申请日：2011-12-20
IPC分类号： G01V1/50
CPC分类号： G01V1/306 , E21B47/0005 , G01V1/50
摘要： An acoustic logging tool emits a wideband acoustic pulse toward an inside surface of a borehole casing and an acoustic response is received. The acoustic response is analyzed at one or more higher order harmonics of the thickness mode resonance of the casing to determine the acoustic impedance of the material behind the casing.
摘要翻译： 声学测井工具朝向钻孔套管的内表面发射宽带声脉冲，并且接收声响应。 在壳体的厚度模式谐振的一个或多个更高次谐波处分析声响应，以确定壳体后面的材料的声阻抗。
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公开(公告)号：US20130293234A1
公开(公告)日：2013-11-07
申请号：US13995500
申请日：2011-12-07
申请人： Andrew J. Hayman , Gregoire Jacob
IPC分类号： G01V3/20
摘要： Systems, tools and techniques for measuring downhole parameters are provided. The techniques involve providing a downhole tool with a sensing apparatus. The sensing apparatus has at least one source positionable about the downhole tool, at least one sensor electrode positionable about a front face of the downhole tool for measuring electrical signals from the source, and a raised insulating cover positionable along the front face of the downhole tool for defining at least one contact surface. The raised insulating cover extends over at least a portion of the sensor electrode whereby the sensor electrode is positionable adjacent to the subterranean formation for electrically coupling thereto without direct contact therewith.
摘要翻译： 提供了测量井下参数的系统，工具和技术。 这些技术涉及向井下工具提供感测装置。 感测装置具有可围绕井下工具定位的至少一个源，可围绕井下工具的前表面定位的至少一个传感器电极，用于测量源的电信号，以及可沿着井下工具的前表面定位的升高的绝缘盖 用于限定至少一个接触表面。 升高的绝缘盖在传感器电极的至少一部分上延伸，由此传感器电极可邻近地下地层定位以便与其直接接触而与其接合。
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公开(公告)号：US4928269A
公开(公告)日：1990-05-22
申请号：US368065
申请日：1989-06-15
摘要： The present invention is directed to a method of calculating the impedance of a material behind the section of a casing. An acoustic excitation pulse is directed towards a section of the casing, resulting in a return waveform having a reverberation segment and an initial reflection segment. The return waveform is analyzed to choose a resonance frequency indicative of the casing's nominal thickness. The return waveform is bandpass filtered about the chosen frequency. A time window of the reverberation segment is selected, and the energy content in the time window of the filtered reverberation segment is calculated. Both the bandpass filter and time windows are selected based on the chosen resonance frequency, thereby removing variations in the thickness of the casing. The energy content calculation produces a cementation signal indicative of the impedance of the cement behind the section of the casing. The impedance value is indicative of the cement quality. In accordance with another aspect, a time portion of the initial reflection segment is chosen, and the energy content in the time window of the filtered initial reflection segment is calculated. This energy is used to normalize the cementation signal calculated from the reverberation segment. In accordance with another aspect of the present invention, the impedance of the material behind the casing is determined.
摘要翻译： 本发明涉及一种计算外壳部分之后的材料的阻抗的方法。 声学激发脉冲指向壳体的一部分，导致具有混响段和初始反射段的返回波形。 分析返回波形以选择表示外壳标称厚度的共振频率。 返回波形关于所选择的频率进行带通滤波。 选择混响段的时间窗口，并计算滤波后的混响段的时间窗口中的能量内容。 基于所选择的共振频率来选择带通滤波器和时间窗，从而消除壳体厚度的变化。 能量含量计算产生表示水泥在套管部分后面的阻抗的胶结信号。 阻抗值表示水泥质量。 根据另一方面，选择初始反射段的时间部分，并且计算滤波后的初始反射段的时间窗中的能量含量。 该能量用于归一化从混响段计算的胶结信号。 根据本发明的另一方面，确定了壳体后面的材料的阻抗。
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公开(公告)号：US20110114309A1
公开(公告)日：2011-05-19
申请号：US12945930
申请日：2010-11-15
CPC分类号： G01V3/24
摘要： A system and method for determining a downhole parameter is provided. The system has a sensor positionable on a downhole tool. The sensor comprises insulation positionable on a pad of the downhole tool, and return(s) positionable in the insulation, the return(s) adapted to exchange a current with a power source, the return(s) defining a fluid zone. The sensor comprises a mud button positionable within the fluid zone and in the insulation a distance from the return(s), the mud button exchanging current with the return(s). The mud button and the fluid zone are positioned a distance from the formation such that a majority of the current passing between the return(s) and the mud button passes through the downhole fluid whereby the current exchanged with the mud button generates a measurement of the downhole fluid.
摘要翻译： 提供了一种用于确定井下参数的系统和方法。 该系统具有位于井下工具上的传感器。 传感器包括可定位在井下工具的焊盘上的绝缘体，以及可定位在绝缘体中的返回件，适于与电源更换电流的返回件限定流体区域。 传感器包括可在流体区域内定位的泥浆按钮，并且在绝缘体中离开回程的距离处，泥浆按钮与回流器交换电流。 泥浆按钮和流体区域距离地层一定距离，使得通过返回物和泥浆按钮之间的大部分电流通过井下流体，由此与泥浆按钮交换的电流产生测量 井下流体
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公开(公告)号：US09841525B2
公开(公告)日：2017-12-12
申请号：US13995500
申请日：2011-12-07
摘要： Systems, tools and techniques for measuring downhole parameters are provided. The techniques involve providing a downhole tool with a sensing apparatus. The sensing apparatus has at least one source positionable about the downhole tool, at least one sensor electrode positionable about a front face of the downhole tool for measuring electrical signals from the source, and a raised insulating cover positionable along the front face of the downhole tool for defining at least one contact surface. The raised insulating cover extends over at least a portion of the sensor electrode whereby the sensor electrode is positionable adjacent to the subterranean formation for electrically coupling thereto without direct contact therewith.
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公开(公告)号：US07242194B2
公开(公告)日：2007-07-10
申请号：US10844173
申请日：2004-05-12
申请人： Andrew J. Hayman , Philip Cheung
发明人： Andrew J. Hayman , Philip Cheung
IPC分类号： G01V3/18
CPC分类号： G01V3/24
摘要： A resistivity tool for investigating a wall of a borehole drilled with a non-conductive mud includes a tool body adapted to be incorporated in a logging-while-drilling tool assembly; a resistivity sensor disposed on the tool body, wherein the resistivity sensor comprises a sensor pad supporting a current injector electrode, a current return electrode, and an array of measurement electrodes, and a circuitry for controlling current injection from the current injector electrode and for measuring voltage difference between electrodes in the array of measurement electrodes, wherein the current injector electrode and the current return electrode are disposed near opposite ends of the sensor pad and the array of measurement electrodes is disposed between the current injector electrode and the current return electrode, wherein the sensor pad is constructed of an insulating material and includes a conductive shielding member, or wherein the sensor pad is constructed of a conducting material and includes insulating sections around the electrodes.
摘要翻译： 用于研究用非导电泥浆钻出的钻孔壁的电阻率工具包括：工具主体，其适于结合在钻井同步钻孔工具组件中; 布置在所述工具主体上的电阻率传感器，其中所述电阻率传感器包括支撑电流注入器电极的传感器焊盘，电流返回电极和测量电极阵列，以及用于控制来自所述电流注入器电极的电流注入并用于测量 测量电极阵列中的电极之间的电压差，其中电流注入器电极和电流返回电极设置在传感器焊盘的相对端附近，并且测量电极阵列设置在电流注入器电极和电流返回电极之间，其中 传感器垫由绝缘材料构成并包括导电屏蔽构件，或者传感器垫由导电材料构成，并且包括电极周围的绝缘部分。
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8.发明授权Apparatus and method for measuring electrical properties of an underground formation 有权用于测量地下地层电气特性的装置和方法公开(公告)号：US09400339B2
公开(公告)日：2016-07-26
申请号：US13995501
申请日：2011-12-07
摘要： The present disclosure provides an apparatus and method for measuring electrical properties of an underground formation surrounding a borehole. The apparatus preferably comprises a downhole tool positionable in the borehole, a sensor pad positionable on the downhole tool, and a plurality of electrodes mounted on the sensor pad and configured to face a wall of the borehole. The apparatus further comprises an insulating layer extending over at least a portion of the plurality of electrodes facing the wall of the borehole.
摘要翻译： 本公开提供了一种用于测量围绕钻孔的地下地层的电性能的装置和方法。 该装置优选地包括可定位在钻孔中的井下工具，可定位在井下工具上的传感器垫，以及安装在传感器垫上并被配置为面对钻孔壁的多个电极。 所述装置还包括在所述多个电极的面向所述钻孔的壁的至少一部分上延伸的绝缘层。
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9.发明申请Apparatus and Method for Measuring Electrical Properties of an Underground Formation 有权用于测量地下地层电气特性的装置和方法公开(公告)号：US20130293235A1
公开(公告)日：2013-11-07
申请号：US13995501
申请日：2011-12-07
申请人： Andrew J. Hayman
IPC分类号： G01V3/20
摘要： The present disclosure provides an apparatus and method for measuring electrical properties of an underground formation surrounding a borehole. The apparatus preferably comprises a downhole tool positionable in the borehole, a sensor pad positionable on the downhole tool, and a plurality of electrodes mounted on the sensor pad and configured to face a wall of the borehole. The apparatus further comprises an insulating layer extending over at least a portion of the plurality of electrodes facing the wall of the borehole.
摘要翻译： 本公开提供了一种用于测量围绕钻孔的地下地层的电性能的装置和方法。 该装置优选地包括可定位在钻孔中的井下工具，可定位在井下工具上的传感器垫，以及安装在传感器垫上并被配置为面对钻孔壁的多个电极。 所述装置还包括在所述多个电极的面向所述钻孔的壁的至少一部分上延伸的绝缘层。
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10.发明授权Shielded apparatus for reducing an electrical field generated by a pad during electrically exploring geological formations 有权用于在电学勘探地质构造期间减少由焊盘产生的电场的屏蔽装置公开(公告)号：US07382136B2
公开(公告)日：2008-06-03
申请号：US10554300
申请日：2004-04-02
申请人： Andrew J. Hayman
发明人： Andrew J. Hayman
IPC分类号： G01V3/18
CPC分类号： E21B47/011 , G01V3/24
摘要： An apparatus for investigating the wall of a borehole in a geological formation. The pad having shielding means which are arranged between a source electrode and a set of measurement electrodes and between the measurement electrodes and a return electrode. The shielding means being flush with or almost flush with the outside face of the pad and extending along the length of the outside face of the pad so that the electric field generated by the current and return electrodes is substantially eliminated in the pad and in the vicinity of the measurement electrodes.
摘要翻译： 一种用于调查地质构造中钻孔壁的装置。 所述垫具有布置在源电极和一组测量电极之间以及测量电极和返回电极之间的屏蔽装置。 屏蔽装置与衬垫的外表面齐平或几乎齐平，并且沿衬垫的外表面的长度延伸，使得电流和返回电极产生的电场在焊盘和附近基本消除 的测量电极。
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