High Voltage Insulating Sleeve For Nuclear Well Logging
    51.
    发明申请
    High Voltage Insulating Sleeve For Nuclear Well Logging 有权
    用于核试井的高压绝缘套管

    公开(公告)号:US20120199730A1

    公开(公告)日:2012-08-09

    申请号:US13366970

    申请日:2012-02-06

    CPC classification number: H01B19/04 E21B47/01 Y10T29/49227

    Abstract: A well logging instrument includes an instrument housing to traverse a wellbore penetrating subsurface formations. An electrically operated energy source that emits ionizing radiation is disposed inside the housing. An insulating sleeve is disposed between the energy source and an interior wall of the housing. The insulating sleeve comprises a thin dielectric film arranged in a plurality of tightly fitting layers of dielectric material disposed adjacent to each other and successively. A thickness of each layer and a number of layers is selected to provide a dielectric strength sufficient to electrically insulate the energy source from the housing and to provide a selected resistance to dielectric failure resulting from the ionizing radiation.

    Abstract translation: 测井仪器包括用于穿过井眼穿透地下地层的仪器壳体。 发射电离辐射的电动能量源设置在壳体内。 绝缘套管设置在能量源和壳体的内壁之间。 绝缘套筒包括布置在彼此相邻并相继布置的多个紧密配合的介电材料层中的薄介电膜。 选择每个层的厚度和多个层以提供足以将能量源与壳体电绝缘的介电强度,并提供由电离辐射引起的介电故障的选定电阻。

    DOWNHOLE NEUTRON ACTIVATION MEASUREMENT
    54.
    发明申请
    DOWNHOLE NEUTRON ACTIVATION MEASUREMENT 有权
    卧室中子激活测量

    公开(公告)号:US20110198488A1

    公开(公告)日:2011-08-18

    申请号:US12996541

    申请日:2009-06-26

    CPC classification number: G01V5/102

    Abstract: Systems and methods for measuring neutron-induced activation gamma-rays in a subterranean formation are provided. In one example, a downhole tool for measuring neutron-induced activation gamma-rays may include a neutron source and a gamma-ray detector. The neutron source may emit neutrons according to a pulsing scheme that includes a delay between two pulses. The delay may be sufficient to allow substantially all neutron capture events due to the emitted neutrons to cease. The gamma-ray detector may be configured to detect activation gamma-rays produced when elements activated by the emitted neutrons decay to a non-radioactive state.

    Abstract translation: 提供了用于测量地下地层中的中子诱导活化γ射线的系统和方法。 在一个示例中,用于测量中子诱导的激活γ射线的井下工具可以包括中子源和γ射线检测器。 中子源可以根据包括两个脉冲之间的延迟的脉冲方案发射中子。 延迟可能足以允许由于发射的中子停止而基本上所有的中子俘获事件。 γ射线检测器可以被配置为检测由发射的中子激活的元素衰变到非放射性状态时产生的激活γ射线。

    High voltage x-ray generator and related oil well formation analysis apparatus and method
    55.
    发明授权
    High voltage x-ray generator and related oil well formation analysis apparatus and method 有权
    高压X射线发生器及相关油井形成分析装置及方法

    公开(公告)号:US07991111B2

    公开(公告)日:2011-08-02

    申请号:US12882005

    申请日:2010-09-14

    Abstract: An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.

    Abstract translation: 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV以上能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中,辐射从X射线发生器通过地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中,参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。

    INTRINSIC RADIOACTIVITY IN A SCINTILLATOR AS COUNT RATE REFERENCE
    56.
    发明申请
    INTRINSIC RADIOACTIVITY IN A SCINTILLATOR AS COUNT RATE REFERENCE 有权
    作为计数速率参考的扫描仪中的内在放射性

    公开(公告)号:US20100301198A1

    公开(公告)日:2010-12-02

    申请号:US12713746

    申请日:2010-02-26

    CPC classification number: G01T1/202

    Abstract: Methods and related systems are described for the detection of nuclear radiation. The system can include a scintillator material that intrinsically generates radiation and a photodetection system coupled to the scintillator material and adapted to generate electrical signals based on light emitted from the scintillator material. A processing system adapted and programmed to receive the electrical signals, to generate a count rate reference value based at least in part on electrical signals generated in response to the light emitted from the scintillator material due to the intrinsically generated radiation.

    Abstract translation: 描述了用于检测核辐射的方法和相关系统。 该系统可以包括本质上产生辐射的闪烁体材料和耦合到闪烁体材料的光电检测系统,并适于基于从闪烁体材料发射的光产生电信号。 一种适于和编程为接收电信号的处理系统,以至少部分地基于由于本征产生的辐射而从闪烁体材料发射的光而产生的电信号产生计数速率参考值。

    Apparatus and method for fluid phase fraction determination using x-rays
    57.
    发明授权
    Apparatus and method for fluid phase fraction determination using x-rays 失效
    使用X射线进行流体相分数测定的装置和方法

    公开(公告)号:US07684540B2

    公开(公告)日:2010-03-23

    申请号:US11425285

    申请日:2006-06-20

    Abstract: An apparatus and method for determining the phase fraction of a fluid collected downhole is shown comprising an x-ray generator, a filter, a sample cell, and a radiation detector. The filter produces a radiation spectrum with a high energy portion and a low energy portion. Filtered radiation is passed through a sample fluid and the resulting attenuated radiation signal is used in calculating the phase fractions of oil, water, and gas in the sample fluid. In one embodiment, a second reference radiation detector measures the radiation directly from the x-ray generator and this measurement is used in normalizing the fraction result. The ratio of the high energy signal to low energy signal of the reference detector is used in controlling the input voltage of the x-ray generator thus ensuring a stable spectrum.

    Abstract translation: 显示用于确定在井下收集的流体的相分数的装置和方法,其包括x射线发生器,滤光器,样品池和放射线检测器。 滤光器产生具有高能量部分和低能量部分的辐射光谱。 过滤的辐射通过样品流体,并且所得减弱的辐射信号用于计算样品流体中油,水和气体的相分数。 在一个实施例中,第二参考辐射检测器直接从x射线发生器测量辐射,并且使用该测量来对分数结果进行归一化。 参考检测器的高能量信号与低能量信号的比率用于控制x射线发生器的输入电压,从而确保稳定的光谱。

    Downhole Imaging Tool Utilizing X-Ray Generator
    58.
    发明申请
    Downhole Imaging Tool Utilizing X-Ray Generator 有权
    井下成像工具利用X射线发生器

    公开(公告)号:US20090147907A1

    公开(公告)日:2009-06-11

    申请号:US11950469

    申请日:2007-12-05

    Applicant: Peter Wraight

    Inventor: Peter Wraight

    CPC classification number: G01V5/12 G01V5/125

    Abstract: An X-ray downhole imaging tool is provided and includes an X-ray tube capable of operating at least at 50 KeV and emitting at least one hundred micro-amperes of continuous electron current and a radiation detector axially displaced from the X-ray tube, at least partially shielded therefrom and radially directed. In certain embodiments, the radiation detector includes a microchannel plate and a resistive anode. In certain embodiments, a second detector which is axially directed is also provided.

    Abstract translation: 提供X射线井下成像工具,并且包括能够至少操作50KeV并且发射至少一百微安的连续电子流的X射线管和从X射线管轴向移位的辐射检测器, 至少部分地屏蔽并径向定向。 在某些实施例中,辐射检测器包括微通道板和电阻性阳极。 在某些实施例中,还提供了轴向指向的第二检测器。

    Apparatus and method for well services fluid evaluation using x-rays
    59.
    发明授权
    Apparatus and method for well services fluid evaluation using x-rays 有权
    使用X射线的井服务流体评估的装置和方法

    公开(公告)号:US07542543B2

    公开(公告)日:2009-06-02

    申请号:US11532236

    申请日:2006-09-15

    CPC classification number: G01N9/24 G01N23/12 G01N33/2823 G01N2015/0693

    Abstract: A method and apparatus for determining the density and phase fractions of well services fluids is shown including an x-ray generator, a sample cell, and a radiation detector. Radiation is passed through the sample cell and fluid and the attenuated radiation signal is used to evaluate the fluid. In one embodiment, a reference radiation detector measures a filtered radiation signal and controls the acceleration voltage and/or beam current of the x-ray generator using this information. The apparatus may be permanently affixed for long term monitoring or temporarily clamped on to a pipe in production.

    Abstract translation: 示出了用于确定井服务流体的密度和相分数的方法和装置,其包括x射线发生器,样品池和放射线检测器。 辐射通过样品池和流体,衰减的辐射信号用于评估流体。 在一个实施例中,参考辐射检测器测量经滤波的辐射信号,并使用该信息来控制x射线发生器的加速电压和/或束流。 该设备可以永久地固定以用于长期监测或临时夹紧在生产中的管道上。

Patent Agency Ranking