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1. 发明授权

US06956372B2 System and method for NMR logging with helical polarization 失效
标题翻译：核磁共振测井与螺旋极化的系统和方法
公开(公告)号：US06956372B2
公开(公告)日：2005-10-18
申请号：US10660193
申请日：2003-09-11
申请人： Peter Masak , Sergei Knizhnik
发明人： Peter Masak , Sergei Knizhnik
IPC分类号： G01R33/44 , G01V3/32 , G01V3/00
CPC分类号： G01N24/081 , G01V3/32
摘要： Nuclear magnetic resonance well logging apparatus and method of use for geophysical examination of a borehole as the borehole is drilled. The apparatus is connected to the drill bit to follow it through the borehole as the borehole is formed. The apparatus comprises a non-magnetic protective collar with lateral protrusions or wings, which provide enhanced abrasion resistance, strength, and rigidity to the probe section. This collar is twisted about its longitudinal axis. The apparatus also comprises one or more permanent magnets within the metal collar and an antenna mounted outside of the collar. Both the magnet and the antenna are twisted about the longitudinal axis of the probe section to produce a generally helical static magnetic field and a radio frequency magnetic field that is substantially orthogonal to the static magnetic field.
摘要翻译：核磁共振测井仪器和钻孔钻探时钻孔地球物理检查的使用方法。当钻孔形成时，该装置连接到钻头以跟随其穿过钻孔。该装置包括具有侧向突起或翼的非磁性保护套圈，其提供对探针部分的增强的耐磨性，强度和刚性。该套环围绕其纵向轴线扭转。该设备还包括金属环内的一个或多个永磁体和安装在套环外部的天线。磁体和天线都围绕探头部分的纵向轴线扭转，以产生基本上垂直于静磁场的大致螺旋状的静磁场和射频磁场。

2. 发明授权

US06940378B2 Apparatus and method for magnetic resonance measurements in an interior volume 有权
标题翻译：用于在内部体积中进行磁共振测量的装置和方法
公开(公告)号：US06940378B2
公开(公告)日：2005-09-06
申请号：US09766044
申请日：2001-01-19
申请人： Melvin N. Miller , Manfred G. Prammer , Moti Huber , Sergei Knizhnik
发明人： Melvin N. Miller , Manfred G. Prammer , Moti Huber , Sergei Knizhnik
IPC分类号： G01R33/383 , H01F7/02 , H01F1/00
CPC分类号： G01R33/383 , H01F7/0278
摘要： A magnet assembly and a magnetic field configuration are disclosed for the generation of a magnetic field in a defined volume, with the field being homogeneous over a pre-determined portion of the volume and not homogeneous over the rest. The disclosed magnetic assembly has a plurality of spaced-apart magnets arranged in pairs. The magnets of each pair are be positioned diametrically opposite each other with respect to an enclosed volume. In different embodiments magnets may all be arranged such that their magnetization directions are substantially aligned, or could alternatively be arranged to have magnetizations pointing in different directions. The angular spacing between the magnets is selected in the range of approximately 13°-17° and could be as large as the size of the magnets. The assembly generates a homogeneous magnetic field within an inner portion of the defined volume, and a second magnetic field, substantially different from the homogeneous magnetic field throughout the remainder, i.e., in the periphery of the defined volume.
摘要翻译：公开了磁体组件和磁场结构，用于在限定的体积中产生磁场，其中场在体积的预定部分上是均匀的，而在其余部分上不均匀。所公开的磁性组件具有成对布置的多个间隔开的磁体。每对的磁体相对于封闭的体积彼此径向相对定位。在不同的实施例中，磁体可以全部被布置成使得它们的磁化方向基本对准，或者可以替代地布置成具有指向不同方向的磁化。磁体之间的角度间隔在大约13°-17°的范围内选择，并且可以与磁体的尺寸一样大。组件在所确定的体积的内部部分内产生均匀的磁场，以及在整个剩余部分，即在限定体积的外围基本上不同于均匀磁场的第二磁场。

3. 发明申请

US20100148787A1 High Frequency or Multifrequency Resistivity Tool 审中-公开
标题翻译：高频或多频电阻率工具
公开(公告)号：US20100148787A1
公开(公告)日：2010-06-17
申请号：US11993430
申请日：2006-06-20
申请人： Marian Morys , Sergei Knizhnik , William Francis Gallagher, III
发明人： Marian Morys , Sergei Knizhnik , William Francis Gallagher, III
IPC分类号： G01V3/18
CPC分类号： G01R27/20 , G01V3/24
摘要： A system and method for determining material resistivity. A current of one or more frequencies is generated using a circuitry (225). The one or more frequencies is directed using one or more electrodes (215) into a surrounding material. The resistivity of the material surrounding the electrodes (215) and a drilling tool (210) is measured by detecting the current at the one or more frequencies.
摘要翻译：一种用于确定材料电阻率的系统和方法。使用电路（225）产生一个或多个频率的电流。使用一个或多个电极（215）将一个或多个频率引导到周围的材料中。通过检测在一个或多个频率处的电流来测量围绕电极（215）和钻孔工具（210）的材料的电阻率。

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