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    METHODS FOR SUPPLYING A CHEMICAL WITHIN A SUBTERRANEAN FORMATION
    1.
    发明申请
    METHODS FOR SUPPLYING A CHEMICAL WITHIN A SUBTERRANEAN FORMATION 审中-公开
    在地下水形成中提供化学物质的方法

    公开(公告)号：US20120247777A1

    公开(公告)日：2012-10-04

    申请号：US13075341

    申请日：2011-03-30

    申请人： Richard D. Hutchins ,  Hemant K.J. Ladva

    发明人： Richard D. Hutchins ,  Hemant K.J. Ladva

    IPC分类号： E21B43/00

    CPC分类号： E21B27/02

    摘要： The method comprises deploying through a well a substantially longitudinal body comprising at least in part a degradable material able to release a chemical; positioning the longitudinal body at a downhole location from the well; and allowing the degradable material to degrade and the chemical to be released.

    摘要翻译： 该方法包括通过井将基本上纵向的主体部署，至少部分地包括能够释放化学品的可降解材料; 将纵向主体定位在井的井下位置; 并允许可降解材料降解并释放出化学物质。

    Time-Lapsed Diffusivity Logging for Monitoring enhanced Oil Recovery
    4.
    发明申请
    Time-Lapsed Diffusivity Logging for Monitoring enhanced Oil Recovery 失效
    用于监测增强油回收的时间延长扩散记录

    公开(公告)号：US20090167302A1

    公开(公告)日：2009-07-02

    申请号：US11966551

    申请日：2007-12-28

    申请人： John Edwards ,  Hemant K.J. Ladva

    发明人： John Edwards ,  Hemant K.J. Ladva

    IPC分类号： G01V3/32

    CPC分类号： G01V3/32

    摘要： The use of time-lapsed NMR diffusivity measurements in an observation well is disclosed. The observation well is cased in the zone of interest with non-magnetic and non-conductive casing that is invisible to the NMR tool. Second, because NMR measurements have a dead zone in front of the antenna depending on the spatial variation of the fixed magnet strength, for example about 2.7 inches, a distance between the casing and the formation is reduced to less than the dead zone length by drilling the observation well at small deviation of about 5° and running the casing without centralizers. Both the casing and the pad-type NMR tool will follow the low side of the borehole, ensuring the measurement volume of the NMR tool is inside the formation and beyond the annulus. With the appropriate observation well completion, time-lapse diffusivity measurements with pad-type NMR tools can address several shortcomings in the current practice of monitoring EOR processes that rely upon changes in density and hydrogen index (HI). Various uses of NMR imaging in wells cased with non-metallic casing are also disclosed.

    摘要翻译： 公开了在观察井中使用经时的NMR扩散率测量。 在非磁性和非导电性外壳的观察区内，观测井套在NMR工具中是不可见的。 第二，由于NMR测量在天线前面具有死区，这取决于固定磁体强度的空间变化，例如约2.7英寸，壳体和地层之间的距离通过钻孔减小到小于死区长度 观察井在小偏差约5°，运行套管没有扶正器。 套管和垫式NMR工具都将跟随钻孔的低侧，确保NMR工具的测量体积在地层内部并超出环空。 通过适当的观测完井，使用垫式NMR工具的延时扩散测量可以解决目前依赖于密度和氢指数（HI）变化的EOR过程的实践中的几个缺点。 还公开了用非金属壳体套管的井中的NMR成像的各种用途。