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公开(公告)号:US07095230B2
公开(公告)日:2006-08-22
申请号:US10955416
申请日:2004-09-30
申请人: Bernhard Blümich , Michael Bruder , Martin Klein , Karl-Heinz Krause , Michael Rabkin , Jürgen Stangenberg , Vladimir Anferov , Sophia Anferova , Radu Fechete
发明人: Bernhard Blümich , Michael Bruder , Martin Klein , Karl-Heinz Krause , Michael Rabkin , Jürgen Stangenberg , Vladimir Anferov , Sophia Anferova , Radu Fechete
IPC分类号: G01V3/00
CPC分类号: G01R33/3808 , G01N24/08 , G01R33/341 , G01R33/383
摘要: In a unilateral NMR probe for the analysis of a material comprising at least one magnet for generating a constant time-invariant polarization field B0 in the material to be analyzed and current conductors forming a radio frequency oscillation circuit for generating a pulsed radio frequency magnetic excitation field B1 which is superimposed on the polarization field N0 in the material, the circuit conductors are so designed as to provide several adjacent excitation fields B0 with alternatingly oppositely oriented magnetic fields, whereby the current conductors generating each one of the excitation fields have a distance from each other which causes a certain penetration depth in the material to be analyzed and echoes received therefrom provide measurement values which are characteristic for the material being analyzed.
摘要翻译: 在用于分析包括至少一个磁体的材料的单侧核磁探针中,用于在待分析的材料中产生恒定的时间不变极化场B 0 <0>和形成射频振荡电路的电流导体 产生叠加在材料中的偏振场N <0>上的脉冲射频磁激励场B 1,电路导体被设计成提供几个相邻的激励场 B <0>具有交替反向取向的磁场,由此产生每个激励场的电流导体彼此之间具有一定距离,这导致要分析的材料中的一定穿透深度,并且从其接收的回波提供 测量值是被分析材料的特征。
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公开(公告)号:US20050040823A1
公开(公告)日:2005-02-24
申请号:US10955416
申请日:2004-09-30
申请人: Bernhard Blumich , Michael Bruder , Martin Klein , Karl-Heinz Krause , Michael Rabkin , Jurgen Stangenberg , Vladimir Anferov , Sophia Anferova , Radu Fechete
发明人: Bernhard Blumich , Michael Bruder , Martin Klein , Karl-Heinz Krause , Michael Rabkin , Jurgen Stangenberg , Vladimir Anferov , Sophia Anferova , Radu Fechete
IPC分类号: G01N24/08 , G01R33/341 , G01R33/38 , G01V3/00
CPC分类号: G01R33/3808 , G01N24/08 , G01R33/341 , G01R33/383
摘要: In a unilateral NMR probe for the analysis of a material comprising at least one magnet for generating a constant time-invariant polarization field B0 in the material to be analyzed and current conductors forming a radio frequency oscillation circuit for generating a pulsed radio frequency magnetic excitation field B1 which is superimposed on the polarization field N0 in the material, the circuit conductors are so designed as to provide several adjacent excitation fields B0 with alternatingly oppositely oriented magnetic fields, whereby the current conductors generating each one of the excitation fields have a distance from each other which causes a certain penetration depth in the material to be analyzed and echoes received therefrom provide measurement values which are characteristic for the material being analyzed.
摘要翻译: 在用于分析包括至少一个磁体的材料的单侧NMR探针中,用于在待分析的材料中产生恒定的时间不变极化场B0和形成用于产生脉冲射频磁场的射频振荡电路的电流导体 B1叠加在材料中的偏振场N0上,电路导体被设计成提供具有交替相反取向的磁场的几个相邻的激励场B0,由此产生每个激励场的电流导体与每个激励场的距离 另一种导致待分析材料中的一定渗透深度并从其接收的回波提供了对于被分析材料的特征的测量值。
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公开(公告)号:US07180287B2
公开(公告)日:2007-02-20
申请号:US10839478
申请日:2004-05-05
申请人: Peter Rottengatter , Holger Thern , Radu Fechete , Martin Blanz , Thomas Kruspe
发明人: Peter Rottengatter , Holger Thern , Radu Fechete , Martin Blanz , Thomas Kruspe
IPC分类号: G01V3/00
CPC分类号: G01V3/32
摘要: NMR spin echo signals, acquired on a MWD logging tool, are susceptible to errors magnetic flux density has a gradient and the magnet on the logging tool is moving relative to the earth. The errors can be corrected by having the excitation pulse cover a smaller or a larger volume than the refocusing pulses. Correction may also be made by selective saturation, or by echo averaging.
摘要翻译: 在MWD测井工具上获取的NMR自旋回波信号容易受到误差的影响,磁通密度具有梯度,而测井工具上的磁体相对于地球运动。 可以通过使激发脉冲覆盖比重新聚焦脉冲更小或更大的体积来校正误差。 还可以通过选择性饱和或通过回波平均来进行校正。
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公开(公告)号:US20050248342A1
公开(公告)日:2005-11-10
申请号:US10839478
申请日:2004-05-05
申请人: Peter Rottengatter , Holger Thern , Radu Fechete , Martin Blanz , Thomas Kruspe
发明人: Peter Rottengatter , Holger Thern , Radu Fechete , Martin Blanz , Thomas Kruspe
CPC分类号: G01V3/32
摘要: NMR spin echo signals, acquired on a MWD logging tool, are susceptible to errors magnetic flux density has a gradient and the magnet on the logging tool is moving relative to the earth. The errors can be corrected by having the excitation pulse cover a smaller or a larger volume than the refocusing pulses. Correction may also be made by selective saturation, or by echo averaging.
摘要翻译: 在MWD测井工具上获取的NMR自旋回波信号容易受到误差的影响,磁通密度具有梯度,而测井工具上的磁体相对于地球运动。 可以通过使激发脉冲覆盖比重新聚焦脉冲更小或更大的体积来校正误差。 还可以通过选择性饱和或通过回波平均来进行校正。
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