METHOD AND APPARATUS FOR DETERMINING THE THERMAL NEUTRON CAPTURE CROSS-SECTION OF A SUBSURFACE FORMATION FROM A BOREHOLE
    11.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING THE THERMAL NEUTRON CAPTURE CROSS-SECTION OF A SUBSURFACE FORMATION FROM A BOREHOLE 有权
    用于确定热中子捕获的方法和装置从钻孔中形成的表面的交叉部分

    公开(公告)号:US20080156976A1

    公开(公告)日:2008-07-03

    申请号:US11621474

    申请日:2007-01-09

    IPC分类号: G01V5/08

    CPC分类号: G01V5/105 G01V5/102

    摘要: Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is the contamination of the early portion of the data by borehole and other effects. The beginning of the processing window is adjusted based on the signal level at the end of the processing window for the preceding pulsing of the source. The end of the processing window is derived from statistical considerations.

    摘要翻译: 使用脉冲核源获得的数据容易受到两个误差源的影响。 一个错误是由于在采集窗口结束时的统计噪音较大。 另一个错误来源是数据的早期部分被钻孔和其他影响所污染。 基于处理窗口末端处的信号电平调整处理窗口的开始,以用于源的前一个脉冲。 处理窗口的结尾是从统计学的考虑得出的。

    Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole
    13.
    发明授权
    Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole 有权
    用于从井眼确定地下地层的热中子捕获截面的方法和装置

    公开(公告)号:US07166834B2

    公开(公告)日:2007-01-23

    申请号:US10730552

    申请日:2003-12-08

    IPC分类号: G01V5/10

    CPC分类号: G01V5/105 G01V5/102

    摘要: Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is the contamination of the early portion of the data by borehole and other effects. The beginning of the processing window is adjusted based on the signal level at the end of the processing window for the preceding pulsing of the source. The end of the processing window is derived from statistical considerations.

    摘要翻译: 使用脉冲核源获得的数据容易受到两个误差源的影响。 一个错误是由于在采集窗口结束时的统计噪音较大。 另一个错误来源是数据的早期部分被钻孔和其他影响所污染。 基于处理窗口末端处的信号电平调整处理窗口的开始,以用于源的前一个脉冲。 处理窗口的结尾是从统计学的考虑得出的。

    Water saturation determination using an oxygen estimate and formation lithology
    14.
    发明授权
    Water saturation determination using an oxygen estimate and formation lithology 有权
    使用氧气估计和地层岩性测定水饱和度

    公开(公告)号:US09360586B2

    公开(公告)日:2016-06-07

    申请号:US13223552

    申请日:2011-09-01

    IPC分类号: G01V5/04 G01V5/10

    CPC分类号: G01V5/101

    摘要: Borehole logging methods and apparatuses for estimating formation properties using nuclear radiation, particularly an apparatus and method for estimating amounts of silicon and/or oxygen in the formation. Methods include estimating a formation property using an oxygen estimate and at least a formation lithology. The method may include using nuclear radiation information from at least one nuclear radiation detector generate the oxygen estimate. The apparatus may include at least one nuclear radiation detector. The apparatuses may include an information processing device to perform the methods.

    摘要翻译: 用于使用核辐射估计地层特性的钻孔测井方法和装置,特别是用于估计地层中硅和/或氧的量的装置和方法。 方法包括使用氧气估计和至少地层岩性来估计地层特性。 该方法可以包括使用来自至少一个核辐射检测器的核辐射信息产生氧估计。 该装置可以包括至少一个核辐射检测器。 这些装置可以包括执行方法的信息处理装置。

    Elemental concentration determination using neutron-induced activation gamma radiation
    15.
    发明授权
    Elemental concentration determination using neutron-induced activation gamma radiation 有权
    使用中子诱导激活γ辐射的元素浓度测定

    公开(公告)号:US09261622B2

    公开(公告)日:2016-02-16

    申请号:US13223522

    申请日:2011-09-01

    IPC分类号: G01V5/08 G01V5/10

    CPC分类号: G01V5/101

    摘要: The present disclosure relates to borehole logging methods and apparatuses for estimating formation properties using nuclear radiation, particularly an apparatus and method for estimating amounts of silicon and/or oxygen in the formation using exposure time information. The method may include using nuclear radiation information from at least one nuclear radiation detector to estimate at least one parameter of interest. The method may also include reducing an error in the estimated formation properties due to speed variations of a nuclear radiation source that activates the silicon and oxygen in the formation. The apparatus may include at least one nuclear radiation detector. The apparatuses may include an information processing device to perform the methods.

    摘要翻译: 本公开涉及用于使用核辐射估计地层特性的钻孔测井方法和装置,特别是用于使用曝光时间信息估计地层中硅和/或氧的量的装置和方法。 该方法可以包括使用来自至少一个核辐射检测器的核辐射信息来估计至少一个感兴趣的参数。 该方法还可以包括由于激活地层中的硅和氧的核辐射源的速度变化而减少估计的地层性质的误差。 该装置可以包括至少一个核辐射检测器。 这些装置可以包括执行方法的信息处理装置。

    Targetless Pulsed Neutron Generator Using Beam-Beam Interaction
    16.
    发明申请
    Targetless Pulsed Neutron Generator Using Beam-Beam Interaction 有权
    使用光束相互作用的无目标脉冲中子发生器

    公开(公告)号:US20130048847A1

    公开(公告)日:2013-02-28

    申请号:US13585557

    申请日:2012-08-14

    IPC分类号: G01V5/10

    CPC分类号: G01V5/101 H05H3/06

    摘要: Method and apparatus for evaluating an earth formation using a pulsed neutron source comprising of dual beams of oppositely directed hydrogen isotopic ions with timing and focal characteristics of each beam set to accomplish a beam-to-beam focusing interaction to a selected position that extends axially along a sealed tube. This makes it possible to generate pulsed neutrons from a plurality of positions.

    摘要翻译: 用于使用脉冲中子源评估地层的方法和装置,所述脉冲中子源包括具有相反方向的氢同位素离子的双光束,其具有每个光束组的定时和焦点特征,以实现与轴向沿轴向延伸的选定位置的光束到光束聚焦相互作用 密封管。 这使得可以从多个位置产生脉冲中子。

    Water Saturation Determination Using an Oxygen Estimate and Formation Lithology
    17.
    发明申请
    Water Saturation Determination Using an Oxygen Estimate and Formation Lithology 有权
    使用氧气估计和形成岩石的水饱和度测定

    公开(公告)号:US20120059589A1

    公开(公告)日:2012-03-08

    申请号:US13223552

    申请日:2011-09-01

    IPC分类号: G06F19/00 G01V5/04

    CPC分类号: G01V5/101

    摘要: The present disclosure relates to borehole logging methods and apparatuses for estimating formation properties using nuclear radiation, particularly an apparatus and method for estimating amounts of silicon and/or oxygen in the formation. The present disclosure includes estimating a formation property using an oxygen estimate and at least a formation lithology. The method may include using nuclear radiation information from at least one nuclear radiation detector generate the oxygen estimate. The apparatus may include at least one nuclear radiation detector. The apparatuses may include an information processing device to perform the methods.

    摘要翻译: 本公开涉及用于使用核辐射估计地层特性的钻孔测井方法和装置,特别是用于估计地层中硅和/或氧的量的装置和方法。 本公开包括使用氧气估计和至少地层岩性来估计地层特性。 该方法可以包括使用来自至少一个核辐射检测器的核辐射信息产生氧估计。 该装置可以包括至少一个核辐射检测器。 这些装置可以包括执行方法的信息处理装置。

    Elemental Concentration Determination Using Neutron-Induced Activation Gamma Radiation
    18.
    发明申请
    Elemental Concentration Determination Using Neutron-Induced Activation Gamma Radiation 有权
    使用中子诱导激光伽马辐射的元素浓度测定

    公开(公告)号:US20120056083A1

    公开(公告)日:2012-03-08

    申请号:US13223522

    申请日:2011-09-01

    IPC分类号: G01V5/10 G01V5/04

    CPC分类号: G01V5/101

    摘要: The present disclosure relates to borehole logging methods and apparatuses for estimating formation properties using nuclear radiation, particularly an apparatus and method for estimating amounts of silicon and/or oxygen in the formation using exposure time information. The method may include using nuclear radiation information from at least one nuclear radiation detector to estimate at least one parameter of interest. The method may also include reducing an error in the estimated formation properties due to speed variations of a nuclear radiation source that activates the silicon and oxygen in the formation. The apparatus may include at least one nuclear radiation detector. The apparatuses may include an information processing device to perform the methods.

    摘要翻译: 本公开涉及用于使用核辐射估计地层特性的钻孔测井方法和装置,特别是用于使用曝光时间信息估计地层中硅和/或氧的量的装置和方法。 该方法可以包括使用来自至少一个核辐射检测器的核辐射信息来估计至少一个感兴趣的参数。 该方法还可以包括由于激活地层中的硅和氧的核辐射源的速度变化而减少估计的地层特性中的误差。 该装置可以包括至少一个核辐射检测器。 这些装置可以包括执行方法的信息处理装置。

    Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis
    19.
    发明授权
    Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis 有权
    自动调整NMR脉冲序列,以实时分析优化SNR

    公开(公告)号:US07565833B2

    公开(公告)日:2009-07-28

    申请号:US11782212

    申请日:2007-07-24

    IPC分类号: E21B49/00 G01V3/14

    摘要: Data from a string of multiple formation evaluation data sensor are evaluated by an expert system. Based on the analysis, the logging speed is increased if all the sensors justify it, and is reduced if any of the sensors require a reduced logging speed. Alternatively, the sensitive volume of a NMR sensor is altered based on a determination of a fraction of the sensitive volume that includes a borehole fluid. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

    摘要翻译: 来自一系列多层评估数据传感器的数据由专家系统评估。 基于分析,如果所有的传感器证明它,记录速度就会提高,如果任何一个传感器需要降低记录速度,就会降低记录速度。 或者,基于包括井眼流体的敏感体积的分数的确定来改变NMR传感器的灵敏体积。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。

    Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole
    20.
    发明授权
    Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole 有权
    用于从井眼确定地下地层的热中子捕获截面的方法和装置

    公开(公告)号:US07439494B2

    公开(公告)日:2008-10-21

    申请号:US11621474

    申请日:2007-01-09

    IPC分类号: G01V5/10

    CPC分类号: G01V5/105 G01V5/102

    摘要: Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is the contamination of the early portion of the data by borehole and other effects. The beginning of the processing window is adjusted based on the signal level at the end of the processing window for the preceding pulsing of the source. The end of the processing window is derived from statistical considerations.

    摘要翻译: 使用脉冲核源获得的数据容易受到两个误差源的影响。 一个错误是由于在采集窗口结束时的统计噪音较大。 另一个错误来源是数据的早期部分被钻孔和其他影响所污染。 基于处理窗口末端处的信号电平调整处理窗口的开始,以用于源的前一个脉冲。 处理窗口的结尾是从统计学的考虑得出的。