Method and apparatus for locating objects using parametric inversion
    4.
    发明授权
    Method and apparatus for locating objects using parametric inversion 失效
    使用参数反演来定位物体的方法和装置

    公开(公告)号:US06700381B2

    公开(公告)日:2004-03-02

    申请号:US10117093

    申请日:2002-04-08

    IPC分类号: G01V311

    CPC分类号: G01V3/10 G01V3/15

    摘要: An apparatus for locating a target object using parametric inversion employs a signal injector capable of injecting a signal into the target object, wherein at least a portion of the target object is buried, a magnetic field receiver, a matching processor for matching to a magnetic field received by the magnetic field receiver a parametric magnetic field distribution model corresponding to the target object and at least one other object, and a locating processor for locating the target object using parameters from the parametric magnetic field distribution model. A method for locating a target object using parametric inversion injects a signal into the target object, at least a portion of which is buried, receives a magnetic field radiated from the target object, matches to the received magnetic field a parametric magnetic field distribution model corresponding to the target object and at least one other object, and locates the target object using parameters from the parametric magnetic field distribution model.

    摘要翻译: 用于使用参数反演来定位目标物体的装置采用能够将目标物体注入信号的信号注射器,其中掩埋目标物体的至少一部分,磁场接收器,与磁场匹配的匹配处理器 由所述磁场接收器接收对应于所述目标对象和至少一个其它对象的参数磁场分布模型;以及定位处理器,用于使用来自所述参数磁场分布模型的参数来定位所述目标对象。 使用参数反转来定位目标物体的方法将至少一部分埋入的目标物体的信号注入到从目标物体辐射的磁场中,与接收到的磁场匹配对应的参数磁场分布模型 到目标对象和至少一个其他对象,并使用来自参数磁场分布模型的参数来定位目标对象。

    Microhydraulic fracturing with downhole acoustic measurement
    10.
    发明授权
    Microhydraulic fracturing with downhole acoustic measurement 有权
    具有井下声学测量的微型液压破碎

    公开(公告)号:US09477002B2

    公开(公告)日:2016-10-25

    申请号:US12430914

    申请日:2009-04-28

    摘要: Methods and related systems are described for measuring acoustic signals in a borehole during a fracturing operation. The system includes a downhole toolstring designed and adapted for deployment in a borehole formed within a subterranean rock formation. A downhole rock fracturing tool opens and propagates a fracture in the subterranean rock formation. Dipole and/or quadrupole acoustic sources transmit acoustic energy into the subterranean rock formation. A receiver array measures acoustic energy traveling through the subterranean rock formation before, during and after the fracture induction. Geophones mounted on extendable arms can be used to measure shear wave acoustic energy travelling in the rock formation. The toolstring can be constructed such that the sources and receivers straddle the fracture zone during the fracturing. Alternatively, the sources or the receivers can co-located axially with the fracture zone, or the toolstring can be repositioned following fracturing such that the fracture zone is between the acoustic sources and receivers.

    摘要翻译: 描述了用于在压裂操作期间测量井眼中的声信号的方法和相关系统。 该系统包括设计并适于部署在形成于地下岩层内的钻孔中的井下工具串。 井下岩石压裂工具打开并传播地下岩层中的裂缝。 偶极和/或四极声源将声能传递到地下岩层中。 接收器阵列测量在断裂诱导之前,之中和之后穿过地下岩层的声能。 安装在可伸缩臂上的地震检波器可用于测量在岩层中行进的剪切波声能。 可以构造工具串,使得源和接收器在压裂期间跨越断裂带。 或者,源或接收器可以与断裂区域轴向共定位,或者在压裂之后可以重新定位工具串,使得断裂区域在声源和接收器之间。