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公开(公告)号：US06489763B1
公开(公告)日：2002-12-03
申请号：US09553462
申请日：2000-04-19
IPC分类号： G01V300
CPC分类号： G01N24/081 , G01V3/32
摘要： A magnet assembly for nuclear magnetic well logging apparatus includes two diametrically opposed magnets which produce a static and substantially homogeneous magnetic field. Each magnet has a magnet axis and is partitioned into a first and a second magnet segment by a plane substantially parallel to the magnet axis.
摘要翻译： 用于核磁测井装置的磁体组件包括两个直径相对的磁体，其产生静态且基本均匀的磁场。 每个磁体具有磁体轴线，并且通过基本上平行于磁体轴线的平面分隔成第一和第二磁体段。
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公开(公告)号：US06898997B2
公开(公告)日：2005-05-31
申请号：US10249936
申请日：2003-05-20
IPC分类号： H02G1/12
CPC分类号： H02G1/1275
摘要： An apparatus for stripping an insulated wire includes a resistive heater element having a first end, a second end, and a coil formed between the first end and the second end. The coil has an inner diameter that is large enough to receive a section of the insulated wire. The apparatus further includes an electronic circuit connected to the first and second ends to deliver power to the resistive heater element such that the coil uniformly distributes heat about the section of the insulated wire to thermally decompose insulation on the section of insulated wire.
摘要翻译： 用于剥离绝缘线的装置包括具有第一端，第二端和形成在第一端和第二端之间的线圈的电阻加热器元件。 线圈具有足够大的内径以接收绝缘线的一部分。 该装置还包括连接到第一和第二端的电子电路，以将电力传递到电阻加热器元件，使得线圈均匀地分布在绝缘电线的部分周围的热量，以热分解绝缘电线部分上的绝缘。
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公开(公告)号：US5432446A
公开(公告)日：1995-07-11
申请号：US219860
申请日：1994-03-29
申请人： Jason P. MacInnis , Don T. Macune , Christopher E. Morriss , Richard W. Oldigs , John E. Smaardyk , Joseph M. Steiner, Jr.
发明人： Jason P. MacInnis , Don T. Macune , Christopher E. Morriss , Richard W. Oldigs , John E. Smaardyk , Joseph M. Steiner, Jr.
CPC分类号： G01R33/3808 , G01V3/32
摘要： NMR logging apparatus is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof at two different depths of investigations. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focused oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. One of the NMR readings is employed to compensate for inaccuracies in the other NMR reading to provide an overall improved NMR log.
摘要翻译： 提供NMR测井装置，其在工具的一侧上的邻近地层的体积中产生强的，静态的和均匀的磁场B0，以在两个不同的调查深度测量其核磁共振特征。 在优选实施例中，该工具具有安装在工具的金属体的外侧上的RF天线，将聚焦的振荡磁场B1引导到所述体积以使岩石孔内的流体的氢核的磁矩偏振或尖端。 相同的天线可以在RF极化场B1的发射之后立即接收感兴趣的体积中的质子进动信号。 使用一个NMR读数来补偿其他NMR读数中的不准确性，以提供总体改进的NMR对数。
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公开(公告)号：US4808929A
公开(公告)日：1989-02-28
申请号：US53589
申请日：1987-05-19
申请人： Richard W. Oldigs
发明人： Richard W. Oldigs
CPC分类号： G01V3/28 , H01F27/367 , H01F5/00
摘要： A shielded solenoid for use in well logging is disclosed in which a cylindrical or solenoidal coil is provided in a support member. A shield is spirally wrapped about the wall of the support member and the coil. The resulting toroidally shaped shield has its individual turns cut so that no complete electrical path exists in each loop of the shield. Each loop of the coil is electrically connected to a ground ring. The shielded solenoid is capacitively shielded from the borehole environment. The shielding is effective because the shielding conductors are effectively transparent to TE electromagnetic fields generated by alternating current flow in the cylindrical coil and substantially eliminate TM electromagnetic fields generation by such current flow.This abstract of the disclosure is neither intended to define the scope of the invention, which is measured by the claims, nor is it intended to limit the invention in any way.
摘要翻译： 公开了一种用于测井的屏蔽螺线管，其中圆柱形或螺线管线圈设置在支撑构件中。 屏蔽螺旋地缠绕在支撑构件和线圈的壁上。 所形成的环形形状的屏蔽件具有单独的转弯，使得屏蔽件的每个环路中不存在完整的电路径。 线圈的每个环路电连接到接地环。 屏蔽螺线管与钻孔环境电容式屏蔽。 屏蔽是有效的，因为屏蔽导体对由圆柱形线圈中的交流电流产生的TE电磁场有效地透明，并且基本上消除了由这种电流产生的TM电磁场。 本公开的摘要既不旨在限定由权利要求书测量的本发明的范围，也不意图以任何方式限制本发明。
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