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    NMR TRACKING OF INJECTED FLUIDS
    3.
    发明公开
    NMR TRACKING OF INJECTED FLUIDS 有权
    NMR-VERFOLGUNG VON INJIZIERTENFLÜSSIGKEITEN

    公开(公告)号：EP2710412A4

    公开(公告)日：2015-07-15

    申请号：EP11869394

    申请日：2011-07-12

    申请人： HALLIBURTON ENERGY SERVICES INC

    发明人： DIRKSEN RON ,  CHEN SONGHUA

    IPC分类号： G01V3/32 ,  E21B43/26 ,  E21B49/00

    CPC分类号： G01V3/32 ,  E21B43/26 ,  E21B49/008

    摘要： Formation testing systems and methods may inject fluids into a formation to initiate fractures and facilitate measurements of various formation properties. In accordance with certain disclosed embodiments, the injection tools are further provided with nuclear magnetic resonance (NMR) sensors to monitor the injected fluids and provide measurements of near-borehole fracture orientations and volumes. Contrast agents and/or magnetic resonance imaging (MRI) techniques may be employed. The fluid injection may occur via an extendible isolation pad, via a fracturing jet, or via an injection port in an isolated region of the borehole. The systems may employ pressure monitoring in conjunction with the NMR sensors to further enhance estimates of formation and fracture properties.

    摘要翻译： 地层测试系统和方法可将流体注入地层以引发裂缝并便于各种地层特性的测量。 根据某些公开的实施例，注射工具还设置有核磁共振（NMR）传感器以监测注入的流体并提供近井眼断裂取向和体积的测量。 可以采用对比剂和/或磁共振成像（MRI）技术。 流体注入可以通过可扩展的隔离垫，经由压裂射流，或经由钻孔的隔离区域中的注入口进行。 该系统可以与NMR传感器一起使用压力监测，以进一步增强地层和断裂特性的估计。

    HYBRID SATURATION RECOVERY-INVERSION RECOVERY PULSE SEQUENCE FOR IMPROVED NMR LOGGING OF BOREHOLES
    4.
    发明公开
    HYBRID SATURATION RECOVERY-INVERSION RECOVERY PULSE SEQUENCE FOR IMPROVED NMR LOGGING OF BOREHOLES 审中-公开
    恢复脉冲序列的混合饱和恢复反演改进了钻头路由器的核磁共振测量

    公开(公告)号：EP2820441A4

    公开(公告)日：2015-11-25

    申请号：EP13791510

    申请日：2013-05-16

    申请人： HALLIBURTON ENERGY SERVICES INC

    发明人： LI LILONG ,  CHEN SONGHUA

    IPC分类号： G01N24/08 ,  G01R33/44 ,  G01V3/32

    CPC分类号： G01V3/32 ,  E21B47/12 ,  G01N24/081 ,  G01R33/448

    摘要： A nuclear magnetic resonance (NMR) logging method includes providing a hybrid pulse sequence having a saturation pulse, an inversion pulse, and a detection sequence. The method also includes measuring echo signals in response to the hybrid pulse sequence. The method also includes deriving a spin-lattice time constant (T1) distribution from the measured echo signals. A NMR system includes a hybrid pulse sequence module to provide a hybrid pulse sequence with a saturation pulse, an inversion pulse, and a detection sequence. The NMR system also includes a control module to select a time interval between the saturation pulse and the inversion pulse.

    DOWNHOLE DIFFERENTIATION OF LIGHT OIL AND OIL-BASED FILTRATES BY NMR WITH OLEOPHILIC NANOPARTICLES
    10.
    发明公开
    DOWNHOLE DIFFERENTIATION OF LIGHT OIL AND OIL-BASED FILTRATES BY NMR WITH OLEOPHILIC NANOPARTICLES 审中-公开
    轻质油品和石油分化孔滤液对BASIS NMR被油纳米约束力

    公开(公告)号：EP2923229A4

    公开(公告)日：2016-12-07

    申请号：EP13876702

    申请日：2013-03-01

    申请人： HALLIBURTON ENERGY SERVICES INC

    发明人： CHEN SONGHUA ,  CHERRY RONALD E ,  SANDOR MAGDALENA

    IPC分类号： G01V3/32 ,  G01N24/00

    CPC分类号： G01V3/32 ,  G01N24/081 ,  G01V3/34 ,  G01V3/38

    摘要： Downhole nuclear magnetic resonance (NMR) methods that utilize oleophilic nanoparticle may allow for differentiation of light oil and oil-based filtrates. For example, a method may involve drilling a wellbore penetrating a subterranean formation using an oil-based drilling fluid that comprises an oil base fluid and a plurality of oleophilic nanoparticles; performing a plurality of NMR measurements at a plurality of depths of investigation (DOI) of a near-wellbore portion of the subterranean formation; and producing an invasion profile of an oil-based drilling fluid filtrate into the near-wellbore portion of the subterranean formation based on the plurality of NMR measurements.