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    • 6. 发明授权
    • Scintillator-based neutron detector for oilfield applications
    • 用于油田应用的基于闪烁体的中子探测器
    • US09304226B2
    • 2016-04-05
    • US14127898
    • 2012-06-26
    • Markus BerheideBradley A. RoscoeJing QianTimothy Spillane
    • Markus BerheideBradley A. RoscoeJing QianTimothy Spillane
    • G01V5/10G01T3/06
    • G01V5/10G01T3/06G01V5/107
    • Borehole logging tools and systems that include a scintillator positioned to interact with scattered source neutrons that are received from a target formation. The scintillator emits luminescence in response to interaction with the scattered neutrons. The scintillator includes an aluminofluoride host material (e.g., LiCAF). In a specific embodiment, the aluminofluoride host material is doped with europium. In a further specific embodiment, a processor distinguishes scattered neutrons from gamma rays based upon identifying a peak within an output signal from the scintillator. In yet another specific embodiment, a system includes a first scintillator and a second scintillator. The processor subtracts luminescence generated by the second scintillator from luminescence generated by the first scintillator to identify a neutron response of the first scintillator.
    • 钻孔测井工具和系统,其包括定位成与从靶层接收的散射源中子相互作用的闪烁体。 闪烁体响应于与分散中子的相互作用发射发光。 闪烁体包括氟化铝主体材料(例如LiCAF)。 在一个具体实施方案中,所述氟化铝主体材料掺杂有铕。 在另一特定实施例中,处理器基于识别来自闪烁体的输出信号内的峰值,将散射的中子与伽马射线区分开。 在又一具体实施例中,系统包括第一闪烁体和第二闪烁体。 处理器从由第一闪烁体产生的发光中减去由第二闪烁体产生的发光,以识别第一闪烁体的中子响应。