DISTRIBUTION OF RADIOACTIVE TAGS AROUND OR ALONG WELL FOR DETECTION THEREOF
    1.
    发明公开
    DISTRIBUTION OF RADIOACTIVE TAGS AROUND OR ALONG WELL FOR DETECTION THEREOF 审中-公开
    放射性分配标签圆形或沿着IT的检测的钻孔

    公开(公告)号:EP3181810A1

    公开(公告)日:2017-06-21

    申请号:EP15290327.4

    申请日:2015-12-18

    摘要: A system disclosed herein is for determining position of a distal end of a tubular string in a wellbore formed in a subsurface formation. The system includes casing lining the wellbore, with the casing carrying a plurality of radioactive sources. A tubular string is disposed in the wellbore and carries a radiation sensor along a length thereof. A processor is associated with the radiation sensor, and is configured to measure intensity of radiation received from the plurality of radioactive sources, and determine the position of the distal end of the tubular string by correlating a formation or wellbore fluid property that varies as a function of position within the wellbore and the measured intensity of the radiation received from the plurality of radioactive sources.

    摘要翻译: 在游离缺失的系统盘是用于在地下地层形成的井眼内的管柱的远端的确定性挖掘位置。 该系统包括壳体衬井筒,与壳体承载放射源复数。 管柱在井筒设置,并且带有沿着其长度的放射线传感器。 处理器与所述辐射传感器相关联,并且被配置为测量从放射源的多个接收到的辐射的强度,和确定矿管柱的远端的通过关联的地层或井眼流体属性的位置没有变化中作为函数 的辐射的测量强度在井筒内的位置和从放射源多个接收到的。