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公开(公告)号：US20130106413A1
公开(公告)日：2013-05-02
申请号：US13287877
申请日：2011-11-02
申请人： Tim Hopper , Nicholas J. Heaton , David T. Oliver , Luis E. Depavia , Yi-Qiao Song , Martin D. Hurlimann
发明人： Tim Hopper , Nicholas J. Heaton , David T. Oliver , Luis E. Depavia , Yi-Qiao Song , Martin D. Hurlimann
IPC分类号： G01V3/32
CPC分类号： E21B47/082
摘要： A method and system for determining a geometry of a borehole includes forming an nuclear magnetic resonance (NMR) caliper with a plurality of coils and coupling the NMR caliper to a borehole assembly. The NMR caliper may be calibrated for porosity and the T2 of the drilling mud, prior to drilling, at the surface. After drilling commences, scans of the borehole may be conducted with each coil of the NMR caliper. Each scan may include propagating RF energy across a range of frequencies with each coil in order to excite a NMR signal at varying depths. Borehole wall distances from the NMR caliper may be determined by reviewing a plurality of T2 distributions from CPMG measurements derived from the scans. In some embodiments, borehole wall distances from the NMR caliper may be determined by reviewing porosity values derived from the scans.
摘要翻译： 用于确定钻孔几何形状的方法和系统包括用多个线圈形成核磁共振（NMR）卡尺并将NMR卡尺耦合到钻孔组件。 可以在钻井前在表面校准NMR厚度测量孔隙度和钻井泥浆的T2。 钻孔开始后，钻孔的扫描可以用NMR卡尺的每个线圈进行。 每个扫描可以包括在每个线圈的频率范围内传播RF能量，以便在不同的深度激发NMR信号。 可以通过从扫描导出的CPMG测量中查看多个T2分布来确定来自NMR厚度的孔壁距离。 在一些实施例中，可以通过检查从扫描导出的孔隙度值来确定来自NMR厚度的钻孔壁距离。
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2.发明申请公开(公告)号：US20130239673A1
公开(公告)日：2013-09-19
申请号：US13805670
申请日：2011-06-24
申请人： Fernando Garcia-Osuna , Jan Morley , Luis E. Depavia , Brian E. Boling , Reza Taherian , David Oliver , Christopher S. Del Campo
发明人： Fernando Garcia-Osuna , Jan Morley , Luis E. Depavia , Brian E. Boling , Reza Taherian , David Oliver , Christopher S. Del Campo
CPC分类号： G01V9/00 , E21B17/16 , E21B47/011 , E21B47/121 , E21B47/122 , G01V1/52 , G01V1/523 , G01V3/18 , G01V5/045 , G01V5/06 , G01V5/08
摘要： A system and method collects at least one measurement within a borehole formed in a formation. The system and method provides a drill collar made of a non-conductive or substantially non-conductive composite material positioned within the borehole. A downhole component is capable of collecting at least one measurement and is embedded within the composite material of the drill collar. The at least one measurement collectable by the downhole component is related to the borehole or the formation about the borehole.
摘要翻译： 系统和方法在地层中形成的井眼内收集至少一个测量值。 该系统和方法提供由定位在钻孔内的非导电或基本不导电的复合材料制成的钻铤。 井下部件能够收集至少一个测量并且嵌入在钻铤的复合材料内。 由井下部件收集的至少一个测量与钻孔或围绕钻孔的形成有关。
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公开(公告)号：US20110204896A1
公开(公告)日：2011-08-25
申请号：US12996524
申请日：2009-06-10
申请人： Hong Zhang , Luis E. Depavia
发明人： Hong Zhang , Luis E. Depavia
CPC分类号： E21B47/0905 , G01V3/28
摘要： A tool for detecting a structure in a well includes a receiver coil having a first winding and a second winding, a first circuit to apply an input signal to the second winding, and a detection circuit to detect a response of the first winding to the input signal applied to the second winding. The response of the first winding indicates presence of the structure in the well if the receiver coil is positioned proximate the structure. The depths (or locations) of these structures are used to avoid placing receivers near these structures for EM induction surveys, such as cross-well, surface-to-wellbore, or single-wellbore induction loggings with receivers in metallic casing.
摘要翻译： 用于检测井中的结构的工具包括具有第一绕组和第二绕组的接收器线圈，将输入信号施加到第二绕组的第一电路以及用于检测第一绕组对输入端的响应的检测电路 信号施加到第二绕组。 如果接收器线圈靠近结构定位，则第一绕组的响应指示井中存在结构。 这些结构的深度（或位置）用于避免将接收器放置在这些结构附近用于EM感应测量，例如在金属外壳中具有接收器的交叉井，井对井眼或单井眼感应测井。
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公开(公告)号：US08326539B2
公开(公告)日：2012-12-04
申请号：US12117089
申请日：2008-05-08
IPC分类号： G01V1/40
CPC分类号： G01V3/28
摘要： Impedances of an electromagnetic (EM) coil positioned in a well lined with an electrically conductive liner are determined. The impedances correspond to plural frequencies of operation of the EM coil. Based on the impedances of the EM coil corresponding to the plural frequencies, an attenuation factor associated with the electrically conductive liner is determined.
摘要翻译： 确定位于衬有导电衬垫的井中的电磁（EM）线圈的阻抗。 阻抗对应于EM线圈的多个操作频率。 基于对应于多个频率的EM线圈的阻抗，确定与导电衬垫相关联的衰减因子。
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公开(公告)号：US06534980B2
公开(公告)日：2003-03-18
申请号：US09995908
申请日：2001-11-28
IPC分类号： G01V300
CPC分类号： G01R33/3808 , G01N24/081 , G01R33/34007 , G01R33/34053 , G01R33/341 , G01R33/3678 , G01R33/383 , G01R33/3873 , G01R33/546 , G01V3/32
摘要： An NMR tool includes RF antennae and a cylindrical permanent magnet to establish a static magnetic B0 field for performing the NMR measurement sequence. The magnetic field of the magnet is polarized across the diameter of the magnet. A ferrite material is located adjacent to the permanent magnet. The antennae are located near opposite ends of the ferrite material and are formed from corresponding coils that are wound around the ferrite material such that the magnetic moments of the antennae are parallel to the longitudinal axis of the magnet.
摘要翻译： NMR工具包括RF天线和圆柱形永磁体，以建立用于执行NMR测量序列的静态磁场B0场。 磁体的磁场在磁体的直径上极化。 铁氧体材料位于永磁体附近。 天线位于铁氧体材料的相对端附近，并且由缠绕在铁氧体材料上的相应线圈形成，使得天线的磁矩平行于磁体的纵向轴线。
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公开(公告)号：US06400147B1
公开(公告)日：2002-06-04
申请号：US09427370
申请日：1999-10-26
IPC分类号： G01V300
CPC分类号： G01R33/3808 , G01N24/081 , G01R33/34007 , G01R33/34053 , G01R33/341 , G01R33/3678 , G01R33/383 , G01R33/3873 , G01R33/546 , G01V3/32
摘要： An NMR logging tool includes at least one antenna and a pulse sequencer. The pulse sequencer is coupled to said at least one antenna and is adapted to receive state descriptors that are indicative of states of an NMR measurement sequence. The pulse sequencer uses the antenna(e) to perform the NMR measurement sequence downhole in a subterranean formation in response to the state descriptors.
摘要翻译： NMR测井工具包括至少一个天线和脉冲序列发生器。 脉冲序列器耦合到所述至少一个天线，并且适于接收指示NMR测量序列的状态的状态描述符。 脉冲序列器使用天线（e）响应于状态描述符在地下地层中进行井下的NMR测量序列。
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公开(公告)号：US08860413B2
公开(公告)日：2014-10-14
申请号：US13288508
申请日：2011-11-03
申请人： Tim Hopper , Luis E. Depavia , Yi-Qiao Song , David T. Oliver
发明人： Tim Hopper , Luis E. Depavia , Yi-Qiao Song , David T. Oliver
CPC分类号： G01V3/32 , E21B47/00 , G01R33/3808
摘要： Methods and systems are provided that enable logging while drilling NMR measurements to be made with a tool having magnets with positions adjustable or movable relative to each other. Such movement can affect the depth of investigation of the NMR tool. A variety of moving assemblies can be used to effectuate the movement, which can be performed either at the surface or downhole. The tool also can include a magnetically permeable member to control the magnetic field gradient.
摘要翻译： 提供的方法和系统能够在钻探NMR测量时进行测井，该测量可以用具有相对于彼此可调节或可移动位置的磁体的工具进行。 这种运动可以影响NMR工具的研究深度。 可以使用各种移动组件来实现可在表面或井下进行的运动。 该工具还可以包括用于控制磁场梯度的导磁构件。
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公开(公告)号：US20090281731A1
公开(公告)日：2009-11-12
申请号：US12117089
申请日：2008-05-08
CPC分类号： G01V3/28
摘要： Impedances of an electromagnetic (EM) coil positioned in a well lined with an electrically conductive liner are determined. The impedances correspond to plural frequencies of operation of the EM coil. Based on the impedances of the EM coil corresponding to the plural frequencies, an attenuation factor associated with the electrically conductive liner is determined.
摘要翻译： 确定位于衬有导电衬垫的井中的电磁（EM）线圈的阻抗。 阻抗对应于EM线圈的多个操作频率。 基于对应于多个频率的EM线圈的阻抗，确定与导电衬垫相关联的衰减因子。
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公开(公告)号：US08941383B2
公开(公告)日：2015-01-27
申请号：US13287877
申请日：2011-11-02
申请人： Tim Hopper , Nicholas J. Heaton , David T. Oliver , Luis E. Depavia , Yi-Qiao Song , Martin D. Hurlimann
发明人： Tim Hopper , Nicholas J. Heaton , David T. Oliver , Luis E. Depavia , Yi-Qiao Song , Martin D. Hurlimann
CPC分类号： E21B47/082
摘要： A method and system for determining a geometry of a borehole includes forming an nuclear magnetic resonance (NMR) caliper with a plurality of coils and coupling the NMR caliper to a borehole assembly. The NMR caliper may be calibrated for porosity and the T2 of the drilling mud, prior to drilling, at the surface. After drilling commences, scans of the borehole may be conducted with each coil of the NMR caliper. Each scan may include propagating RF energy across a range of frequencies with each coil in order to excite a NMR signal at varying depths. Borehole wall distances from the NMR caliper may be determined by reviewing a plurality of T2 distributions from CPMG measurements derived from the scans. In some embodiments, borehole wall distances from the NMR caliper may be determined by reviewing porosity values derived from the scans.
摘要翻译： 用于确定钻孔几何形状的方法和系统包括用多个线圈形成核磁共振（NMR）卡尺并将NMR卡尺耦合到钻孔组件。 可以在钻井前在表面校准NMR厚度测量孔隙度和钻井泥浆的T2。 钻孔开始后，钻孔的扫描可以用NMR卡尺的每个线圈进行。 每个扫描可以包括在每个线圈的频率范围内传播RF能量，以便在不同的深度激发NMR信号。 可以通过从扫描导出的CPMG测量中查看多个T2分布来确定来自NMR厚度的孔壁距离。 在一些实施例中，可以通过检查从扫描导出的孔隙度值来确定来自NMR厚度的钻孔壁距离。
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公开(公告)号：US20120126809A1
公开(公告)日：2012-05-24
申请号：US13288508
申请日：2011-11-03
申请人： Tim Hopper , Luis E. Depavia , Yi-Qiao Song , David T. Oliver
发明人： Tim Hopper , Luis E. Depavia , Yi-Qiao Song , David T. Oliver
CPC分类号： G01V3/32 , E21B47/00 , G01R33/3808
摘要： Methods and systems are provided that enable logging while drilling NMR measurements to be made with a tool having magnets with positions adjustable or movable relative to each other. Such movement can affect the depth of investigation of the NMR tool. A variety of moving assemblies can be used to effectuate the movement, which can be performed either at the surface or downhole. The tool also can include a magnetically permeable member to control the magnetic field gradient.
摘要翻译： 提供的方法和系统能够在钻探NMR测量时进行测井，该测量可以用具有相对于彼此可调节或可移动位置的磁体的工具进行。 这种运动可以影响NMR工具的研究深度。 可以使用各种移动组件来实现可在表面或井下进行的运动。 该工具还可以包括用于控制磁场梯度的导磁构件。
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