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140 条记录 (耗时 0.038 秒)

    Automatic Adjustment of NMR Pulse Sequence to Optimize SNR Based On Real Time Analysis
    1.
    发明申请
    Automatic Adjustment of NMR Pulse Sequence to Optimize SNR Based On Real Time Analysis 有权
    基于实时分析的NMR脉冲序列自动调整优化SNR

    公开(公告)号：US20080021654A1

    公开(公告)日：2008-01-24

    申请号：US11782212

    申请日：2007-07-24

    申请人： Michael Gillen ,  Ole Engels ,  W. Gilchrist ,  Darryl Trcka ,  Thomas Kruspe ,  Songhua Chen

    发明人： Michael Gillen ,  Ole Engels ,  W. Gilchrist ,  Darryl Trcka ,  Thomas Kruspe ,  Songhua Chen

    IPC分类号： E21B47/00

    CPC分类号： E21B47/00 ,  E21B47/04 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/445 ,  G01R33/448 ,  G01R33/543 ,  G01V3/32

    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抽象的规则，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。

    Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis
    3.
    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

    申请人： Michael Gillen ,  Ole G. Engels ,  W. Allen Gilchrist ,  Darryl E. Trcka ,  Thomas Kruspe ,  Songhua Chen

    发明人： Michael Gillen ,  Ole G. Engels ,  W. Allen Gilchrist ,  Darryl E. Trcka ,  Thomas Kruspe ,  Songhua Chen

    IPC分类号： E21B49/00 ,  G01V3/14

    CPC分类号： E21B47/00 ,  E21B47/04 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/445 ,  G01R33/448 ,  G01R33/543 ,  G01V3/32

    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。

    Rapid NMR multi-frequency T1 and T2 acquisition for earth formations evaluation with MWD or wireline tools
    6.
    发明授权
    Rapid NMR multi-frequency T1 and T2 acquisition for earth formations evaluation with MWD or wireline tools 有权

    公开(公告)号：US06600316B2

    公开(公告)日：2003-07-29

    申请号：US10164917

    申请日：2002-06-06

    申请人： Songhua Chen ,  Dan Georgi ,  Thomas Kruspe

    发明人： Songhua Chen ,  Dan Georgi ,  Thomas Kruspe

    IPC分类号： G01V300

    CPC分类号： G01R33/50 ,  G01V3/32

    摘要： Nuclear magnetic resonance measurement of a medium are made using a tool with a static magnetic field having a gradient. The nuclear spins of the medium are magnetically polarized using the static magnetic field. Data are acquired from at least three sensitive volumes of the medium using an interleaved sequence of pulses at three different non-overlapping frequencies. At each frequency, a number of sub-sequences of a saturation pulse, a recovery pulse and at least one refocusing pulse are used. The saturation times between the saturation pulse and the recovery pulse for the sub-sequences are selected from a distribution of values between a minimum time to a maximum time to enable determination of T1 and T2 spectra over a wide range of values. Repetitions of sub-sequences having the same saturation at one or more frequencies may be carried out with phase alternation of the recovery pulse phases.

    EROSION PREDICTION FOR DOWNHOLE TOOLS
    8.
    发明申请
    EROSION PREDICTION FOR DOWNHOLE TOOLS 有权

    公开(公告)号：US20230012069A1

    公开(公告)日：2023-01-12

    申请号：US17858131

    申请日：2022-07-06

    申请人： Thomas Kruspe ,  Peter Rottengatter

    发明人： Thomas Kruspe ,  Peter Rottengatter

    IPC分类号： E21B12/02 ,  E21B41/00 ,  E21B47/13

    摘要： Downhole monitoring systems are described. The systems include a downhole string disposed in a borehole, the string having a downhole tool and the borehole has fluid therein. A sacrificial electrical sensor element is arranged in or on the string. The sacrificial electrical sensor element includes magnetic material at least partially exposed to the fluid and at least one coil arranged in magnetic communication with the magnetic material. A controller is configured to provide an electrical current into the coil, measure an electrical property of the coil that is based on the magnetic material in magnetic communication with the coil, and determine a wear state of the downhole tool based on the measured electrical property.

    Downhole closed loop drilling system with depth measurement
    9.
    发明授权
    Downhole closed loop drilling system with depth measurement 有权

    公开(公告)号：US09963936B2

    公开(公告)日：2018-05-08

    申请号：US14049430

    申请日：2013-10-09

    申请人： Thomas Kruspe ,  Robert A. Estes ,  Rocco DiFoggio ,  Francis Chad Hanak

    发明人： Thomas Kruspe ,  Robert A. Estes ,  Rocco DiFoggio ,  Francis Chad Hanak

    IPC分类号： E21B47/0224 ,  E21B7/04 ,  E21B44/00 ,  E21B47/09

    CPC分类号： E21B7/04 ,  E21B44/005 ,  E21B47/091

    摘要： A method, system and drilling apparatus for directional drilling are disclosed. A drill bit is located at a downhole end of a drill string in a borehole. A length of the borehole between a surface location and the drill bit at the downhole end of a drill string is determined and an azimuth angle and inclination of the drill bit is obtained. The length of the borehole may be determined by recording an arrival time at a downhole location of an acoustic pulse travelling from a surface location to the downhole location and determines the travel time and borehole length therefrom. A downhole processor determines a position and orientation of the drill bit from the determined length, azimuth angle and inclination and alters a steering parameter of the drill bit using the determined position and orientation of the drill bit to obtain a selected trajectory for drilling the borehole.