公开(公告)号：US20130092827A1

公开(公告)日：2013-04-18

申请号：US13677424

申请日：2012-11-15

申请人： Anton Nikitin ,  Alexandr Vinkurov

发明人： Anton Nikitin ,  Alexandr Vinkurov

IPC分类号： G01V5/10

CPC分类号： G01V5/101

摘要： An apparatus for performing an operation in a borehole penetrating the earth includes a borehole tool and a neutron source within the borehole tool that emits neutron-alpha particles pairs as the result of a nuclear reaction. The apparatus also includes an alpha particle detector within the borehole tool arranged to detect when an alpha particle emitted by the neutron source strikes it and a gamma ray detector to detect gamma rays produced as a result of interactions between neutrons produced by the neutron source and at least one material in an area of interest outside of the borehole. The apparatus also includes a processing system that determines a characteristic of the area of interest based on a time difference between when the alpha particle strikes the alpha particle detector and a time when one or more gamma rays strikes the gamma ray detector.

摘要翻译： 用于在穿透地球的钻孔中进行操作的装置包括钻孔工具和钻孔工具内的中子源，其作为核反应的结果发射中子-α粒子对。 该装置还包括钻孔工具内的α粒子检测器，其被布置成检测中子源发射的α粒子何时撞击它;以及伽马射线检测器，用于检测由中子源产生的中子和在中子源产生的中子之间的相互作用产生的伽马射线 在钻孔外的感兴趣区域内的至少一种材料。 该装置还包括处理系统，其基于α粒子撞击α粒子检测器之间的时间差和当一个或多个伽马射线撞击伽马射线检测器的时间之间的时间差来确定感兴趣区域的特性。