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    Spontaneous potential measurement apparatus connected between metallic housings of a wellbore apparatus for measuring the spontaneous potential of an earth formation
    1.
    发明授权
    Spontaneous potential measurement apparatus connected between metallic housings of a wellbore apparatus for measuring the spontaneous potential of an earth formation 失效
    连接在用于测量地层的自发电位的井筒装置的金属壳体之间的自发电位测量装置

    公开(公告)号：US5402069A

    公开(公告)日：1995-03-28

    申请号：US80428

    申请日：1993-06-18

    申请人： Jacques R. Tabanou ,  M. Reza Taherian ,  Tarek M. Habashy

    发明人： Jacques R. Tabanou ,  M. Reza Taherian ,  Tarek M. Habashy

    IPC分类号： G01V3/26 ,  G01V3/18 ,  G01V3/20

    CPC分类号： G01V3/265

    摘要： A spontaneous potential (SP) sub is interconnected between two metallic housings of a wellbore apparatus and is lowered into a wellbore. A spontaneous potential (SP) of an earth formation trasversed by the wellbore is measured by the SP sub, and a log is generated from the sub which is representative of the spontaneous potential of the formation, the log being substantially free of a special type of distortion which typified the prior art SP measurements taken by prior art SP measurement apparatus. The SP sub includes a measurement electrode, monitoring electrodes placed on both sides of the measurement electrode, a bucking electrode placed on both sides of the monitoring electrodes, current driving circuitry connected to the bucking electrodes, and receiving circuitry connected to the monitoring electrodes. The current driving circuitry delivers a current of sufficient magnitude to each bucking electrode such that the voltage potential between the monitoring electrodes is approximately equal to zero. The current from each bucking electrode is grounded via its own respective metallic housing and not via a surface oriented electrode. The receiving circuitry monitors the voltage between each of the monitoring electrodes and looks for a zero potential difference between the monitoring electrodes. When the receiving circuitry locates the zero potential difference at a moment in time between its monitoring electrodes, the measurement of the spontaneous potential taken by the measurement electrode at that same precise moment in time is received and recorded. A plurality of such measurements made by the measurement electrode represents a log of spontaneous potential of the earth formation traversed by the wellbore which is substantially free of the distortion which typified the prior art SP log measurements.

    摘要翻译： 自发电位（SP）sub在井筒装置的两个金属壳体之间互连，并被下降到井筒中。 通过SP sub测量由井筒对置的地层的自发电位（SP），并且从代表地层的自发电位的sub产生对数，对数基本上不含特殊类型 失真表示现有技术的SP测量装置所采用的现有技术SP测量。 SP sub包括测量电极，设置在测量电极两侧的监视电极，设置在监视电极两侧的降压电极，连接到降压电极的电流驱动电路和连接到监视电极的接收电路。 电流驱动电路向每个降压电极传送足够大的电流，使得监视电极之间的电压电位近似等于零。 来自每个降压电极的电流通过其各自的金属外壳而不经由表面取向的电极接地。 接收电路监视每个监测电极之间的电压，并寻找监测电极之间的零电位差。 当接收电路在其监测电极之间的时间点定位零电位差时，接收并记录测量电极在同一精确时刻所采取的自发电位的测量。 由测量电极进行的多次这样的测量表示由井筒穿过的地层的自发电位的对数，其基本上没有以现有技术的SP测量值为代表的失真。

    Logging earth formations with electromagnetic energy to determine conductivity and permittivity
    2.
    发明授权
    Logging earth formations with electromagnetic energy to determine conductivity and permittivity 失效
    用电磁能记录地层以确定电导率和介电常数

    公开(公告)号：US5345179A

    公开(公告)日：1994-09-06

    申请号：US848621

    申请日：1992-03-09

    申请人： Tarek M. Habashy ,  M. Reza Taherian ,  Alain Dumont ,  Jeffrey A. Beren

    发明人： Tarek M. Habashy ,  M. Reza Taherian ,  Alain Dumont ,  Jeffrey A. Beren

    IPC分类号： G01V3/30

    CPC分类号： G01V3/30

    摘要： A form of the disclosure is directed to determining properties of formations surrounding an earth borehole having a standoff layer. A method is disclosed for determining the conductivity and permittivity of the standoff layer and the conductivity and permittivity of the formations adjacent the standoff layer. A further form of the disclosure is directed to an electromagnetic logging apparatus having transmitting and receiving antennas in RTTR, RRTTRR or TTRRTT arrangements.

    摘要翻译： 本公开的一种形式涉及确定具有隔离层的地球钻孔周围的地层的性质。 公开了一种用于确定隔离层的导电性和介电常数以及邻近隔离层的地层的导电率和介电常数的方法。 本公开的另一形式涉及具有RTTR，RRTTRR或TTRRTT布置的发射和接收天线的电磁测井装置。

    Microwave device and method for measuring multiphase flows
    3.
    发明授权
    Microwave device and method for measuring multiphase flows 失效
    微波装置及多相流测量方法

    公开(公告)号：US5485743A

    公开(公告)日：1996-01-23

    申请号：US311080

    申请日：1994-09-23

    申请人： M. Reza Taherian ,  Tarek M. Habashy

    发明人： M. Reza Taherian ,  Tarek M. Habashy

    IPC分类号： G01N22/00

    CPC分类号： G01N22/00

    摘要： A method for measuring multiphase flows in a conduit using series of microwave antennae arranged around the circumference of the conduit so as to transmit microwave energy into, or detect propagated microwave energy in the conduit, the method including the steps of: transmitting microwave energy from each antenna in turn while detecting microwave energy at the non-transmitting antenna and integrating the results from all antennae so as to characterize the flow in the conduit. Apparatus for performing the method includes means for exciting each antenna in turn to transmit microwave energy into the pipe and means for detecting microwave energy at the non-transmitting antennae, and means for integrating the results from all transmitters to characterize the flow in the conduit.

    摘要翻译： 一种用于在导管中测量使用一系列微波天线的多相流的方法，所述微波天线布置在导管的圆周周围，以将微波能量传输到或检测导管中传播的微波能量，该方法包括以下步骤：从每个 天线反过来同时在非发射天线处检测微波能量并整合来自所有天线的结果，以便表征导管中的流动。 用于执行该方法的装置包括依次激励每个天线以将微波能量传输到管道中的装置和用于在非发射天线处检测微波能量的装置，以及用于整合来自所有发射机的结果以表征导管中的流量的装置。