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    • 42. 发明授权
    • Trapping magnetizable particulates
    • 捕获可磁化颗粒物
    • US09579661B2
    • 2017-02-28
    • US14038353
    • 2013-09-26
    • SCHLUMBERGER TECHNOLOGY CORPORATION
    • Edmund J. FordhamChristopher Lenn
    • B03C1/02G01R33/28B03C1/28G01N24/08
    • B03C1/02B03C1/284B03C1/286B03C1/288B03C2201/18G01N24/081G01R33/28
    • Nuclear magnetic resonance apparatus for measuring properties of a fluid stream flowing within a pipeline has one or more magnet systems for applying magnetic field to the fluid stream and also has means for inducing and observing magnetic resonance within the fluid stream as it passes through a said magnetic field. The apparatus may also include a polarizing magnetic field upstream of the magnetic field in which resonance is observed. The fluid stream may be hydrocarbon from an underground reservoir. In order to guard against accumulation of magnetisable iron debris particles entrained in the fluid flow, the apparatus comprises one or more upstream traps having a magnetic field to attract and hold solid magnetizable material and an exit path for the removal of the solid magnetizable material so that it does not continue towards any polarizing field and the field where resonance is observed.
    • 用于测量在管道内流动的流体流的性质的核磁共振装置具有用于向流体流施加磁场的一个或多个磁体系统,并且还具有用于在流体流通过所述磁体时诱导和观察流体流内的磁共振的装置 领域。 该装置还可以包括在其中观察到共振的磁场上游的偏振磁场。 流体流可以是来自地下储层的烃。 为了防止夹带在流体流中的可磁化铁屑颗粒的积聚,该装置包括一个或多个具有磁场以吸引和保持固体可磁化材料的上游捕集器和用于去除固体可磁化材料的出口路径,使得 它不会持续到任何偏振场和观察到共振的场。