公开(公告)号：US20150035529A1

公开(公告)日：2015-02-05

申请号：US13885453

申请日：2011-11-16

申请人： Timothy Hopper ,  David T. Oliver ,  Anatoly Dementyev

发明人： Timothy Hopper ,  David T. Oliver ,  Anatoly Dementyev

IPC分类号： G01V3/32 ,  E21B47/00

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 magnets placed outside of the drill collar and magnetically permeable members to control the magnetic field gradient. A set of magnets can be disposed on and/or embedded on a drill collar, with an antenna disposed axially therebetween. Alternatively, a set of magnets and an antenna disposed therebetween can be disposed on a sleeve that is slid onto a recess in a drill collar. Additionally, a permeable member can be axially positioned between the set of magnets for affecting the depth of investigation.

摘要翻译： 提供了方法和系统，其能够在钻探NMR测量时进行测井，磁体位于钻铤外部的磁体和磁导体构件上以控制磁场梯度。 一组磁体可以设置在钻铤上和/或嵌入钻铤上，其中天线位于其间。 或者，一组磁体和设置在其间的天线可以设置在滑动到钻铤中的凹部上的套筒上。 此外，可渗透构件可轴向地定位在该组磁体之间，以影响调查深度。

公开(公告)号：US09841529B2

公开(公告)日：2017-12-12

申请号：US13885453

申请日：2011-11-16

申请人： Timothy Hopper ,  David T. Oliver ,  Anatoly Dementyev

发明人： Timothy Hopper ,  David T. Oliver ,  Anatoly Dementyev

IPC分类号： G01V3/32 ,  E21B47/00 ,  G01R33/38

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 magnets placed outside of the drill collar and magnetically permeable members to control the magnetic field gradient. A set of magnets can be disposed on and/or embedded on a drill collar, with an antenna disposed axially therebetween. Alternatively, a set of magnets and an antenna disposed therebetween can be disposed on a sleeve that is slid onto a recess in a drill collar. Additionally, a permeable member can be axially positioned between the set of magnets for affecting the depth of investigation.

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。

公开(公告)号：US07023212B2

公开(公告)日：2006-04-04

申请号：US11030668

申请日：2004-12-31

申请人： Kuo Chiang Chen ,  Robert C. Smith ,  David T. Oliver ,  Gary A. Hazen ,  Dean M. Homan ,  Jan W. Smits

发明人： Kuo Chiang Chen ,  Robert C. Smith ,  David T. Oliver ,  Gary A. Hazen ,  Dean M. Homan ,  Jan W. Smits

IPC分类号： G01V3/02

CPC分类号： G01V3/28

摘要： A well logging tool and method are disclosed comprising a conductive mandrel, an antenna array disposed around the conductive mandrel, wherein the antenna array comprises a plurality of antennas disposed on insulating supports and at least one contact spacer, the at least one contact spacer having at least one conductor channel having a contact assembly disposed therein, a sleeve disposed over the antenna array, wherein the sleeve includes at least one electrode assembly, the at least one electrode and the contact assembly adapted to provide a radially conductive path from an exterior of the well logging tool to the conductive mandrel and wherein the electrode assembly comprises a first conductor exposed to the exterior of the well logging tool and at least one second conductor conductively connected to the first conductor and exposed to an inner surface of the sleeve, wherein at least one of the first conductor or the second conductor being in sealed contact with the sleeve to prevent the passage of fluid through the sleeve.

摘要翻译： 公开了测井工具和方法，其包括导电心轴，设置在导电心轴周围的天线阵列，其中天线阵列包括设置在绝缘支撑件上的多个天线和至少一个接触间隔件，所述至少一个接触间隔件具有 至少一个具有设置在其中的接触组件的导体通道，设置在所述天线阵列上的套筒，其中所述套筒包括至少一个电极组件，所述至少一个电极和所述接触组件适于提供从所述天线阵列的外部的径向导电路径 测井工具到导电心轴，并且其中电极组件包括暴露于测井工具的外部的第一导体和导电连接到第一导体并暴露于套筒的内表面的至少一个第二导体，其中至少 第一导体或第二导体之一与套筒密封接触以防止 流体通过套管。

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

IPC分类号： G01V3/00 ,  G01R33/38 ,  G01V3/32

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。

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

IPC分类号： G01V3/00 ,  E21B47/08

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。

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

IPC分类号： G01V3/32 ,  G01R33/44

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。

公开(公告)号：US07193420B2

公开(公告)日：2007-03-20

申请号：US11334198

申请日：2006-01-17

申请人： Kuo Chiang Chen ,  Robert C. Smith ,  David T. Oliver ,  Gary A. Hazen ,  Dean M. Homan ,  Jan W. Smits

发明人： Kuo Chiang Chen ,  Robert C. Smith ,  David T. Oliver ,  Gary A. Hazen ,  Dean M. Homan ,  Jan W. Smits

IPC分类号： G01V3/02

CPC分类号： G01V3/28

摘要： A well logging tool and method are disclosed comprising a conductive mandrel, an antenna array disposed around the conductive mandrel, wherein the antenna array comprises a plurality of antennas disposed on insulating supports and at least one contact spacer, the at least one contact spacer having at least one conductor channel having a contact assembly disposed therein, a sleeve disposed over the antenna array, wherein the sleeve includes at least one electrode assembly, the at least one electrode and the contact assembly adapted to provide a radially conductive path from an exterior of the well logging tool to the conductive mandrel and wherein the electrode assembly comprises a first conductor exposed to the exterior of the well logging tool and at least one second conductor conductively connected to the first conductor and exposed to an inner surface of the sleeve, wherein at least one of the first conductor or the second conductor being in sealed contact with the sleeve to prevent the passage of fluid through the sleeve.

摘要翻译： 公开了测井工具和方法，其包括导电心轴，设置在导电心轴周围的天线阵列，其中天线阵列包括设置在绝缘支撑件上的多个天线和至少一个接触间隔件，所述至少一个接触间隔件具有 至少一个具有设置在其中的接触组件的导体通道，设置在所述天线阵列上的套筒，其中所述套筒包括至少一个电极组件，所述至少一个电极和所述接触组件适于提供从所述天线阵列的外部的径向导电路径 测井工具到导电心轴，并且其中电极组件包括暴露于测井工具的外部的第一导体和导电连接到第一导体并暴露于套筒的内表面的至少一个第二导体，其中至少 第一导体或第二导体之一与套筒密封接触以防止 流体通过套管。

公开(公告)号：US06933726B2

公开(公告)日：2005-08-23

申请号：US10604622

申请日：2003-08-05

申请人： Kuo-Chiang Chen ,  Robert C. Smith ,  Gary A. Hazen ,  Charles Kibbe ,  Richard A. Rosthal ,  Thomas D. Barber ,  Stephen D. Bonner ,  David T. Oliver

发明人： Kuo-Chiang Chen ,  Robert C. Smith ,  Gary A. Hazen ,  Charles Kibbe ,  Richard A. Rosthal ,  Thomas D. Barber ,  Stephen D. Bonner ,  David T. Oliver

IPC分类号： G01V3/28 ,  G01V3/02

CPC分类号： G01V3/28

摘要： A well logging tool includes a conductive mandrel; an antenna array disposed around the conductive mandrel, wherein the antenna array comprises a plurality of antennas disposed on insulating supports and at least one contact spacer, the at least one contact spacer having at least one conductor channel having a contact assembly disposed therein; and a sleeve disposed over the antenna array, wherein the sleeve includes at least one electrode, the at least one electrode and the contact assembly adapted to provide a radially conductive path from an exterior of the well logging tool to the conductive mandrel.

摘要翻译： 测井工具包括导电心轴; 设置在所述导电心轴周围的天线阵列，其中所述天线阵列包括设置在绝缘支撑件上的多个天线和至少一个接触间隔件，所述至少一个接触间隔件具有设置在其中的接触组件的至少一个导体通道; 以及布置在所述天线阵列上的套筒，其中所述套筒包括至少一个电极，所述至少一个电极和所述接触组件适于提供从所述测井工具的外部到所述导电心轴的径向导电路径。