Method and apparatus for subterranean formation flow imaging
    5.
    发明授权
    Method and apparatus for subterranean formation flow imaging 失效
    地层流动成像方法与装置

    公开(公告)号:US06856132B2

    公开(公告)日:2005-02-15

    申请号:US10291963

    申请日:2002-11-08

    IPC分类号: G01R33/44 G01V3/32 G01V3/00

    CPC分类号: G01N24/081 G01V3/32

    摘要: The present invention relates to a method and apparatus for measuring a property relating to fluid flow in an earth formation, more specifically to directly measuring formation permeability and other fluid characteristics. The present invention provides a method for determining the permeability of a hydrocarbon bearing earth formation, which method comprises the steps of: locating a tool at a selected position in a borehole penetrating the earth formation; inducing a flow of fluid within the earth formation to said tool; creating at least two MRI images of said fluid while flowing within the earth formation to said tool, said at least two images being created at different times; determining displacement of said fluid within the earth formation between said different times, using the at least two MRI images.

    摘要翻译: 本发明涉及一种用于测量与地层中的流体流动相关的性质的方法和装置,更具体地涉及直接测量地层渗透性和其它流体特性。 本发明提供了一种用于确定含烃地层的渗透性的方法,该方法包括以下步骤:将工具定位在穿透地层的钻孔中的选定位置; 诱导地层内的流体流向所述工具; 在所述地层中流动到所述工具时,产生所述流体的至少两个MRI图像,所述至少两个图像在不同时间被创建; 使用所述至少两个MRI图像确定所述不同时间之间的所述地层内的所述流体的位移。

    NMR flow measurement while drilling
    7.
    发明授权
    NMR flow measurement while drilling 失效
    钻井时的NMR流量测量

    公开(公告)号:US06897652B2

    公开(公告)日:2005-05-24

    申请号:US10465760

    申请日:2003-06-19

    IPC分类号: G01V3/32 G01V3/00

    CPC分类号: G01V3/32 E21B2021/006

    摘要: A method for measuring in situ formation fluid flow utilizing an NMR logging while drilling tool is disposed in the borehole, a modified saturation recovery or time of flight angiography pulse sequence is utilized to tag spins in the formation, at least two measurements are made of the tagged spins as they propagate toward the borehole in the under-balanced environment, allowing a determination of fluid velocity, from which permeability may be determined. Techniques are disclosed to perform the method in both an over-balanced and under-balanced environment.

    摘要翻译: 一种利用NMR记录测量原位地层流体流量的方法,其中钻孔工具设置在井眼中,改进的饱和回收或飞行时间血管造影脉冲序列用于标记地层中的自旋,至少进行两次测量 标记的旋转,因为它们在平衡不足的环境中向钻孔传播,允许确定可以确定渗透性的流体速度。 公开了在超平衡和不平衡环境中执行该方法的技术。