首页>
外国专利>
NMR logging-while-drilling tool generating an axisymmetric magnetic field having straight contour lines in the resonance region
NMR logging-while-drilling tool generating an axisymmetric magnetic field having straight contour lines in the resonance region
展开▼
机译:NMR随钻测井仪产生在共振区域中具有直线轮廓线的轴对称磁场
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention is directed to a nuclear magnetic resonance apparatus and method for generating an axisymmetric magnetic field having long, straight contour lines in the resonance region. A magnetically permeable member is used to shape the static magnetic field generated by an array of permanent magnets. The magnetically permeable member minimizes variations of the static magnetic field in the formation due to vertical motion of the apparatus while obtaining a nuclear magnetic resonance measurement. Further, the magnetically permeable member may minimize variations of the static magnetic field in the formation due to lateral motion of the apparatus while obtaining a nuclear magnetic resonance measurement.
展开▼