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    • 4. 发明申请
    • T2 INVERSIONS WITH REDUCED MOTION ARTIFACTS
    • T2反演与减少运动文学
    • US20150241541A1
    • 2015-08-27
    • US14190337
    • 2014-02-26
    • Martin BlanzHolger Frank ThernRadu Coman
    • Martin BlanzHolger Frank ThernRadu Coman
    • G01R33/565G01V3/38G01V3/32
    • G01R33/56509G01N24/081G01R33/448G01V3/32G01V3/38
    • A method for processing nuclear magnetic resonance (NMR) measurement data includes: receiving, with a processor, NMR measurement data obtained from an NMR tool, the NMR measurement data being affected by a motion artifact and having a first echo train obtained with a long polarization time TWET and a second echo train obtained with a short polarization time TWTL that is shorter than TWET; and at least one of (i) reducing, with a processor, an effect on the NMR measurement data of the motion artifact using the first echo train and the second echo train and (ii) identifying, with a processor, the motion artifact using the first echo train and the second echo train; wherein the motion artifact is related to a magnetic field magnitude that varies in a volume of interest due to a motion of the NMR tool.
    • 一种用于处理核磁共振(NMR)测量数据的方法包括:用处理器接收从NMR工具获得的NMR测量数据,NMR测量数据受到运动伪影的影响,并具有由长极化获得的第一回波串 时间TWET和以短于TWET的短极化时间TWTL获得的第二回波串; 以及(i)利用处理器减少使用第一回波串和第二回波串的运动假象的NMR测量数据的影响中的至少一个,以及(ii)使用处理器识别运动假象,使用 第一回波列车和第二回波列车; 其中所述运动假象与由所述NMR工具的运动引起的感兴趣体积变化的磁场强度有关。
    • 6. 发明申请
    • CORRECTION FOR GAIN VARIATION DUE TO FAST CHANGING NMR SENSOR GAIN
    • 由于快速变化的NMR传感器增益,增益变化的校正
    • US20120235677A1
    • 2012-09-20
    • US13412817
    • 2012-03-06
    • Martin BlanzThomas Kruspe
    • Martin BlanzThomas Kruspe
    • G01R33/565G01R33/34
    • G01N24/081G01R33/5659
    • An apparatus for performing nuclear magnetic resonance (NMR) measurements of a material of interest includes an NMR tool and a processor. The NMR tool includes a transmitter antenna; a transmitter coupled to the transmitter antenna; and a receiver antenna configured to receive NMR signals in response to transmitted pulses of electromagnetic energy transmitted by the transmitter antenna. The NMR signals include at least a first signal and a second signal of a phase-alternated group of signals. The processor is configured to receive the NMR signals; receive a first system gain related to the first signal and a second system gain related to the second signal, each system gain being related to a system comprising the NMR tool and the material of interest; and calibrate the NMR signals using the first system gain and the second system gain.
    • 用于对感兴趣的材料进行核磁共振(NMR)测量的装置包括NMR工具和处理器。 NMR工具包括发射机天线; 耦合到发射机天线的发射机; 以及接收器天线,其被配置为响应于由所述发射机天线发送的电磁能量的传输脉冲而接收NMR信号。 NMR信号至少包括相位交替信号组的第一信号和第二信号。 处理器被配置为接收NMR信号; 接收与第一信号相关的第一系统增益和与第二信号相关的第二系统增益,每个系统增益与包括NMR工具和感兴趣材料的系统相关; 并使用第一系统增益和第二系统增益校准NMR信号。
    • 7. 发明授权
    • Estimating formation temperature near a borehole and using same for estimating a property of the formation
    • 估计井眼附近的地层温度,并用它来估算地层的性质
    • US07937999B2
    • 2011-05-10
    • US11860646
    • 2007-09-25
    • Martin BlanzThomas Kruspe
    • Martin BlanzThomas Kruspe
    • E21B47/06G01V9/00
    • G01K7/42E21B47/065
    • Apparatus, methods and computer programs disclosed herein, in one aspect, estimate a temperature of a selected region of an earth formation using a virgin formation temperature of the earth formation, a downhole fluid temperature measured over time, an elapsed time between drilling proximate the selected region and making of a formation evaluation measurement of the selected region, an estimate of thermal conductivity of the earth formation, and a heat capacity of the earth formation. In another aspect, the apparatus, methods and computer programs utilize the estimated temperature and the formation evaluation measurement to estimate a property of interest of the selected region. 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. 37 CFR 1.72(b).
    • 在一方面,本文公开的装置,方法和计算机程序使用地层的原始地层温度,随时间测量的井下流体温度估计地层的选定区域的温度,接近所选择的钻井时间之间的经过时间 区域,以及所选区域的地层评价测量值,地层热导率的估计值和地层的热容量。 在另一方面,装置,方法和计算机程序利用估计的温度和地层评价测量来估计所选区域的感兴趣的属性。 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。 37 CFR 1.72(b)。
    • 9. 发明授权
    • Correction of NMR artifacts due to axial motion and spin-lattice relaxation
    • 由于轴向运动和自旋晶格弛豫导致的NMR伪影的校正
    • US07339374B2
    • 2008-03-04
    • US11752419
    • 2007-05-23
    • Martin Blanz
    • Martin Blanz
    • G01V3/00
    • G01R33/5617G01N24/081G01R33/56308G01V3/32
    • NMR spin echo signals are corrected for axial motion of the borehole logging tool. The correction is applied to an averaged echo train using an average velocity determined from surface measurements over the duration of averaging of the echo trains. An additional correction may be applied to correct for excess polarization or incomplete polarization of nuclear spins due to an insufficient wait time between pulse sequences. 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.
    • NMR自旋回波信号被校正用于钻孔测井工具的轴向运动。 该校正应用于使用在回波列车的平均持续时间内由表面测量确定的平均速度的平均回波串。 由于脉冲序列之间的等待时间不足,可以应用附加的校正来校正核自旋的过量极化或不完全偏振。 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。