Measurement of formation gas saturation in cased wellbores using pulsed neutron instrumentation
    21.
    发明申请
    Measurement of formation gas saturation in cased wellbores using pulsed neutron instrumentation 有权
    使用脉冲中子仪器测量套管井筒中地层气饱和度

    公开(公告)号:US20070023623A1

    公开(公告)日:2007-02-01

    申请号:US11189388

    申请日:2005-07-26

    IPC分类号: G01V5/10

    CPC分类号: G01V5/101

    摘要: A pulsed neutron tool with three or more detectors is used for making measurements inside casing. The measurements may be used to determine gas saturation at a constant gas pressure, pressure at constant gas saturation, or to determine both gas saturation and gas pressure.

    摘要翻译: 具有三个或更多个检测器的脉冲中子工具用于在壳体内进行测量。 测量值可用于确定恒定气体压力,恒定气体饱和压力下的气体饱和度,或确定气体饱和度和气体压力。

    Method and apparatus for determining aluminum concentration in earth formations
    22.
    发明申请
    Method and apparatus for determining aluminum concentration in earth formations 失效
    确定地层中铝浓度的方法和装置

    公开(公告)号:US20060033023A1

    公开(公告)日:2006-02-16

    申请号:US11223352

    申请日:2005-09-09

    IPC分类号: G01V5/10

    CPC分类号: G01N33/24 G01V5/101

    摘要: Elemental analysis of an earth formation (including Aluminum) is obtained using measurements from a gamma ray logging tool. The inelastic spectrum of Aluminum is determined from measurements made in a water tank. From the elemental analysis, an estimate of the mineralogy of the formation is made treating the problem as one of Linear Programming (maximizing an objective function subject to equality and/or inequality constraints.

    摘要翻译: 使用伽马射线测井工具的测量值获得地层(包括铝)的元素分析。 铝的非弹性光谱是通过在水箱中进行的测量来确定的。 从元素分析中,对地层矿物学的估计是把问题作为线性规划之一(最大化目标函数受到平等和/或不等式约束的限制)。

    Method for cement evaluation with neutron logs
    23.
    发明授权
    Method for cement evaluation with neutron logs 有权
    用中子原木进行水泥评估的方法

    公开(公告)号:US09383473B2

    公开(公告)日:2016-07-05

    申请号:US13864918

    申请日:2013-04-17

    申请人: Pingjun Guo

    发明人: Pingjun Guo

    IPC分类号: G01V5/10 E21B47/00

    CPC分类号: G01V5/104 E21B47/0005

    摘要: Method for evaluating cement integrity in a cased well environment using a logging tool that has a neutron source and one or more neutron or gamma ray detectors. Neutron porosity logs are obtained from the well before (42) and after (41) casing. This log data along with well dimensions and material composition parameters are the input quantities to a multi-parameter database (43) that is constructed by computer modeling or laboratory experiments to relate volume fraction for fluid filled channels in the cement sheath to the input quantities. The channel volume fraction (45) corresponding to the input quantities is identified or interpolated (44) from the multi-parameter database.

    摘要翻译: 使用具有中子源和一个或多个中子或伽马射线探测器的测井工具评估套管井环境中的水泥完整性的方法。 中空孔隙度测井是从(42)和(41)套管之后的井获得的。 该日志数据以及井尺寸和材料组成参数是通过计算机建模或实验室实验构建的多参数数据库(43)的输入量,以将水泥套管中流体填充通道的体积分数与输入量相关联。 对应于输入量的通道体积分数(45)从多参数数据库中被识别或内插(44)。

    AZIMUTHAL CEMENT DENSITY IMAGE MEASUREMENTS
    24.
    发明申请
    AZIMUTHAL CEMENT DENSITY IMAGE MEASUREMENTS 审中-公开
    AZIMUTHAL水泥密度图像测量

    公开(公告)号:US20140374582A1

    公开(公告)日:2014-12-25

    申请号:US14278143

    申请日:2014-05-15

    IPC分类号: G01V5/12 E21B49/00

    CPC分类号: G01V5/125 E21B47/0005

    摘要: Well logging method and logging tool for measuring cement density and thickness at different azimuth angles for a cemented, cased well. The method uses a gamma source, a short-spaced detector, a long-spaced detector, and preferably a backscatter detector, where the detector-to-source spacings are designed for calculating (93) thickness and density of the cement annulus (94) from the detector count rates (91).

    摘要翻译: 测井方法和测井工具,用于测量水泥井套管不同方位角处的水泥密度和厚度。 该方法使用伽马源,短距离检测器,长距离检测器,并且优选地反向散射检测器,其中检测器到源间隔被设计用于计算水泥环(94)的厚度和密度(93) 从检测器计数率(91)。

    Method for determining shale bed boundaries and gamma ray activity with gamma ray instrument
    25.
    发明授权
    Method for determining shale bed boundaries and gamma ray activity with gamma ray instrument 失效
    用γ射线仪测定页岩边界和伽马射线活度的方法

    公开(公告)号:US07649169B2

    公开(公告)日:2010-01-19

    申请号:US11085902

    申请日:2005-03-21

    申请人: Pingjun Guo

    发明人: Pingjun Guo

    IPC分类号: G01V5/00

    CPC分类号: G01V5/06

    摘要: Resolution of thin beds made by a natural gamma ray logging tool is improved using a relation between the width of the response and the bed thickness. The peak gamma ray of the bed is determined using another relation between the measured gamma ray response and the bed thickness.

    摘要翻译: 使用自然伽马射线测井工具制成的薄床的分辨率通过响应宽度和床层厚度之间的关系得到改善。 使用测量的伽马射线响应和床层厚度之间的另一关系确定床的峰值伽马射线。

    Method and apparatus for shale bed detection in deviated and horizontal wellbores
    27.
    发明授权
    Method and apparatus for shale bed detection in deviated and horizontal wellbores 有权
    偏斜和水平井筒页岩床检测方法与装置

    公开(公告)号:US07254486B2

    公开(公告)日:2007-08-07

    申请号:US11104149

    申请日:2005-04-12

    申请人: Pingjun Guo

    发明人: Pingjun Guo

    IPC分类号: G01V5/06

    CPC分类号: G01V5/06

    摘要: A relative dip angle of a deviated borehole is determined from natural gamma ray measurements. Dip corrected measurements are processed to determine the thickness of thin beds, and the peak gamma ray response in thin beds.

    摘要翻译: 偏斜钻孔的相对倾角由自然伽马射线测量确定。 处理浸渍校正的测量以确定薄床的厚度,以及薄床中的峰值伽马射线响应。

    Method and apparatus for shale bed detection in deviated and horizontal wellbores
    29.
    发明申请
    Method and apparatus for shale bed detection in deviated and horizontal wellbores 有权
    偏斜和水平井筒页岩床检测方法与装置

    公开(公告)号:US20060229815A1

    公开(公告)日:2006-10-12

    申请号:US11104149

    申请日:2005-04-12

    申请人: Pingjun Guo

    发明人: Pingjun Guo

    IPC分类号: G06F19/00

    CPC分类号: G01V5/06

    摘要: A relative dip angle of a deviated borehole is determined from natural gamma ray measurements. Dip corrected measurements are processed to determine the thickness of thin beds, and the peak gamma ray response in thin beds.

    摘要翻译: 偏斜钻孔的相对倾角由自然伽马射线测量确定。 处理浸渍校正的测量以确定薄床的厚度,以及薄床中的峰值伽马射线响应。

    Method for determining formation porosity and gas saturation in a gas reservoir
    30.
    发明申请
    Method for determining formation porosity and gas saturation in a gas reservoir 有权
    确定气藏中地层孔隙度和气饱和度的方法

    公开(公告)号:US20050263691A1

    公开(公告)日:2005-12-01

    申请号:US10856449

    申请日:2004-05-28

    申请人: Pingjun Guo

    发明人: Pingjun Guo

    IPC分类号: G01V5/08 G01V5/12 G01V5/14

    CPC分类号: G01V5/125

    摘要: Measurements made with porosity and density logging tools in a gas reservoir may differ due to invasion effects. The effects are particularly large on measurement-while-drilling applications where invasion is minimal. Using a Monte-Carlo method, a relationship is established between true formation porosity and porosity estimates from density and porosity tools. This relationship is used on real data to get an improved estimate of formation porosity and of gas saturation.

    摘要翻译: 气藏中孔隙度和密度测井工具的测量可能因入侵效应而不同。 在入侵最小的钻井测量应用中,效果特别大。 使用Monte-Carlo方法,确定了真实地层孔隙度和密度和孔隙度工具的孔隙度估计之间的关系。 这种关系用于实际数据,以获得地层孔隙度和气体饱和度的改进估计。