Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis
    1.
    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。

    Elemental concentration determination using neutron-induced activation gamma radiation

    公开(公告)号:US10324224B2

    公开(公告)日:2019-06-18

    申请号:US13223539

    申请日:2011-09-01

    IPC分类号: G01V5/10

    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 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 include separating a gross nuclear radiation count into separate nuclear radiation components. 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.

    Method and apparatus for an improved formation density indicator using pulsed neutron instruments
    6.
    发明授权
    Method and apparatus for an improved formation density indicator using pulsed neutron instruments 有权
    使用脉冲中子仪器改善地层密度指示器的方法和装置

    公开(公告)号:US07294829B2

    公开(公告)日:2007-11-13

    申请号:US11115792

    申请日:2005-04-27

    IPC分类号: G01V5/10

    CPC分类号: G01V5/101

    摘要: A pulsed neutron source is used in a density logging tool with three or more detectors. This enables compensation for source variations and provides redundant measurements that are used to make borehole corrections and/or corrections for casing.

    摘要翻译: 脉冲中子源用于具有三个或更多个检测器的密度测井工具。 这可以补偿源变化,并提供用于对套管进行钻孔校正和/或校正的冗余测量。

    Targetless pulsed neutron generator using beam-beam interaction
    7.
    发明授权
    Targetless pulsed neutron generator using beam-beam interaction 有权
    使用束束相互作用的无靶脉冲中子发生器

    公开(公告)号:US08604417B2

    公开(公告)日:2013-12-10

    申请号:US13585557

    申请日:2012-08-14

    IPC分类号: G01V5/08

    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。

    Pulsed neutron based monitoring of CO2 in enhanced recovery and sequestration projects
    8.
    发明授权
    Pulsed neutron based monitoring of CO2 in enhanced recovery and sequestration projects 有权
    在增强回收和封存项目中基于脉冲中子的二氧化碳监测

    公开(公告)号:US08471197B2

    公开(公告)日:2013-06-25

    申请号:US12821797

    申请日:2010-06-23

    IPC分类号: G01V7/10

    CPC分类号: E21B47/10 G01V5/101

    摘要: A method for estimating a concentration of carbon dioxide (CO2) in a formation penetrated by a borehole, the method includes: conveying a carrier through the borehole; irradiating the formation with neutrons from a neutron source disposed at the carrier; detecting photons from the formation resulting from the irradiating; and estimating the concentration of CO2 from data acquired from the detecting.

    摘要翻译: 一种用于估计由钻孔渗透的地层中的二氧化碳(CO 2)的浓度的方法,所述方法包括:通过钻孔输送载体; 用设置在载体上的中子源用中子照射地层; 从照射产生的地层中检测光子; 并从从检测获得的数据中估算CO 2的浓度。

    Elemental Concentration Determination Using Neutron-Induced Activation Gamma Radiation
    9.
    发明申请
    Elemental Concentration Determination Using Neutron-Induced Activation Gamma Radiation 审中-公开
    使用中子诱导激光伽马辐射的元素浓度测定

    公开(公告)号:US20120059588A1

    公开(公告)日:2012-03-08

    申请号:US13223539

    申请日:2011-09-01

    IPC分类号: G01V5/04 G06F19/00 G01V5/00

    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 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 include separating a gross nuclear radiation count into separate nuclear radiation components. 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。 该方法可以包括将总核辐射计数分离成单独的核辐射分量。 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。

    Apparatus and method for determining formation density from nuclear density measurements made using sensors at more than one location
    10.
    发明授权
    Apparatus and method for determining formation density from nuclear density measurements made using sensors at more than one location 有权
    用于使用在多于一个位置处的传感器进行的核密度测量来确定地层密度的装置和方法

    公开(公告)号:US08481920B2

    公开(公告)日:2013-07-09

    申请号:US13186086

    申请日:2011-07-19

    IPC分类号: G01V5/04

    CPC分类号: G01V5/08

    摘要: In one aspect, the present disclosure provides an apparatus for determining formation density. One embodiment of the apparatus includes a bottomhole assembly having a drill bit attached to end thereof for drilling through a formation, a first sensor in the drill bit configured to provide first signals for determining a first density of the formation proximate to the drill, a second sensor distal from the first sensor configured to provide signals for determining density of a second density of the formation, and a processor configured to determine the formation density from the first density and the second density.

    摘要翻译: 一方面,本公开提供了一种用于确定地层密度的装置。 该装置的一个实施例包括井底组件,其具有附接到其端部的钻头以钻穿地层,钻头中的第一传感器被配置为提供用于确定接近钻头的地层的第一密度的第一信号,第二 远离第一传感器的传感器被配置成提供用于确定地层的第二密度的密度的信号,以及处理器,被配置为从第一密度和第二密度确定地层密度。