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公开(公告)号：US09696453B2
公开(公告)日：2017-07-04
申请号：US13791931
申请日：2013-03-09
发明人： Robert Freedman , Vivek Anand , Susan Herron , Michael M. Herron
摘要： A method for predicting at least one property of a geological formation may include generating mapping function values relating a plurality of reference elemental compositions to corresponding reference properties thereof based upon at least one non-linear mapping function. The method may further include determining a sample elemental composition of at least one sample associated with the geological formation and performing, using a processor, an interpolation to map the sample elemental composition to at least one sample property based upon the mapping function values and the at least one non-linear function.
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公开(公告)号：US20180321416A1
公开(公告)日：2018-11-08
申请号：US15775317
申请日：2016-10-18
发明人： Robert Freedman
CPC分类号： G01V3/38 , G01R33/448 , G01V3/32
摘要： Disclosed herein is a formation evaluation method including estimating a total porosity of an earth formation as a function of bulk density and total nuclear magnetic resonance (NMR) porosity of the earth formation. The total porosity of the earth formation as estimated underrepresents bitumen content. A gas filled porosity of the earth formation is estimated as a function of the bulk density and the total NMR porosity. A kerogen volume of the earth formation is estimated as a function of the gas filled porosity and a total organic carbon content of the earth formation. A bitumen filled total porosity is determined as a function of the estimated kerogen volume and the estimated total porosity of the earth formation. A corrected kerogen volume of the earth formation is determined as a function of the estimated kerogen volume and the estimated total porosity of the earth formation.
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公开(公告)号：US09759832B1
公开(公告)日：2017-09-12
申请号：US15131185
申请日：2016-04-18
IPC分类号： G01V3/32 , G01V3/34 , G01N24/12 , G01N24/08 , G01R33/28 , G01R33/46 , G01R33/565 , G01R33/38
CPC分类号： G01V3/32 , G01N24/08 , G01N24/081 , G01N24/12 , G01R33/282 , G01R33/3664 , G01R33/3808 , G01R33/46 , G01R33/56563 , G01V3/34
摘要： An apparatus for NMR properties of subsurface formations includes a magnet, a transmitter antenna and at least one of a receiver section of the transmit antenna or a separate receiver antenna having a length along the longitudinal dimension of the apparatus which is shorter than a length of the transmitter antenna along the longitudinal dimension. The apparatus includes circuitry for applying radio frequency current pulses to the entire transmitter antenna and for receiving signals by the at least one of the receiver section of the transmitter antenna and the separate receiver antenna.
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公开(公告)号：US20140214324A1
公开(公告)日：2014-07-31
申请号：US13791931
申请日：2013-03-09
发明人： Robert Freedman , Vivek Anand , Susan Herron , Michael M. Herron
IPC分类号： G01V5/10
摘要： A method for predicting at least one property of a geological formation may include generating mapping function values relating a plurality of reference elemental compositions to corresponding reference properties thereof based upon at least one non-linear mapping function. The method may further include determining a sample elemental composition of at least one sample associated with the geological formation and performing, using a processor, an interpolation to map the sample elemental composition to at least one sample property based upon the mapping function values and the at least one non-linear function.
摘要翻译： 用于预测地质构造的至少一个属性的方法可以包括基于至少一个非线性映射函数来生成将多个参考元素组合物相关联到其对应参考属性的映射函数值。 该方法还可以包括确定与地质构造相关联的至少一个样本的样本元素组成，并使用处理器执行插值，以将样本元素组合映射到基于映射函数值和at 最少一个非线性函数。
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5.发明授权System and method for obtaining nuclear magnetic resonance measurements on reservoir fluids for prediction of fluid properties 有权用于获得储层流体核磁共振测量的系统和方法，用于预测流体性质公开(公告)号：US09459330B2
公开(公告)日：2016-10-04
申请号：US13827549
申请日：2013-03-14
发明人： Robert Freedman , Vivek Anand , Payam Tabrizi , Ricardo Y. Torres , Douglas W. Grant , Daniel Catina , Krishnamurthy Ganesan
CPC分类号： G01R33/30 , G01N24/081 , G01R33/305 , G01V3/32
摘要： A nuclear magnetic resonance (NMR) measurement system for high pressure and temperature measurements on fluids is disclosed. The system has a sensor assembly that includes a sample holder having a body formed from a non-magnetic metal and defining an interior cavity for receiving a fluid sample, a frame member disposed in the interior cavity of the sample holder, an antenna coil disposed in the interior cavity about the frame member, an inlet that allows the fluid sample to enter the interior cavity, an outlet that allows for the fluid sample to be flushed from the interior cavity, and a magnet assembly having a central bore in which the sample holder is disposed. Adjacent to the sample holder are pulsed field gradient coils for performing diffusion measurements. The system further includes pulse sequencer circuitry that supplies signals to the antenna coil. When the interior cavity of the sample holder is filled with the fluid sample, the antenna coil and the frame member are at least partially submerged in the fluid sample, and the antenna coil obtains NMR measurements of the fluid sample in response to the signals. Related methods and apparatuses are also disclosed herein.
摘要翻译： 公开了用于对流体进行高压和温度测量的核磁共振（NMR）测量系统。 该系统具有传感器组件，其包括具有由非磁性金属形成的主体并且限定用于接收流体样品的内部空腔的样品保持器，设置在样品保持器的内部空腔中的框架构件，设置在 围绕框架构件的内部空腔，允许流体样品进入内部空腔的入口，允许流体样品从内部空腔冲洗的出口，以及具有中心孔的磁体组件，样品架 被处置。 与样品架相邻的是用于进行扩散测量的脉冲场梯度线圈。 该系统还包括向天线线圈提供信号的脉冲序列器电路。 当样品保持器的内腔填充有流体样品时，天线线圈和框架构件至少部分地浸没在流体样品中，并且天线线圈响应于信号获得流体样品的NMR测量值。 本文还公开了相关方法和装置。
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6.发明申请公开(公告)号：US20140253116A1
公开(公告)日：2014-09-11
申请号：US13827549
申请日：2013-03-14
发明人： Robert Freedman , Vivek Anand , Payam Tabrizi , Ricardo Y. Torres , Douglas W. Grant , Daniel Catina , Krishnamurthy Ganesan
CPC分类号： G01R33/30 , G01N24/081 , G01R33/305 , G01V3/32
摘要： A nuclear magnetic resonance (NMR) measurement system for high pressure and temperature measurements on fluids is disclosed. The system has a sensor assembly that includes a sample holder having a body formed from a non-magnetic metal and defining an interior cavity for receiving a fluid sample, a frame member disposed in the interior cavity of the sample holder, an antenna coil disposed in the interior cavity about the frame member, an inlet that allows the fluid sample to enter the interior cavity, an outlet that allows for the fluid sample to be flushed from the interior cavity, and a magnet assembly having a central bore in which the sample holder is disposed. Adjacent to the sample holder are pulsed field gradient coils for performing diffusion measurements. The system further includes pulse sequencer circuitry that supplies signals to the antenna coil. When the interior cavity of the sample holder is filled with the fluid sample, the antenna coil and the frame member are at least partially submerged in the fluid sample, and the antenna coil obtains NMR measurements of the fluid sample in response to the signals. Related methods and apparatuses are also disclosed herein.
摘要翻译： 公开了用于对流体进行高压和温度测量的核磁共振（NMR）测量系统。 该系统具有传感器组件，其包括具有由非磁性金属形成的主体并且限定用于接收流体样品的内部空腔的样品保持器，设置在样品保持器的内部空腔中的框架构件，设置在 围绕框架构件的内部空腔，允许流体样品进入内部空腔的入口，允许流体样品从内部空腔冲洗的出口，以及具有中心孔的磁体组件，样品架 被处置。 与样品架相邻的是用于进行扩散测量的脉冲场梯度线圈。 该系统还包括向天线线圈提供信号的脉冲序列器电路。 当样品保持器的内腔填充有流体样品时，天线线圈和框架构件至少部分地浸没在流体样品中，并且天线线圈响应于信号获得流体样品的NMR测量值。 本文还公开了相关方法和装置。
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公开(公告)号：US20140152301A1
公开(公告)日：2014-06-05
申请号：US14173405
申请日：2014-02-05
IPC分类号： G01V3/32
CPC分类号： G01V3/32 , G01R33/4625
摘要： The Larmor frequency for an in situ nuclear magnetic resonance (NMR) tool is determined and used to acquire NMR data. An NMR tool is provided and placed in situ, for example, in a wellbore. An initial estimate of the Larmor frequency for the in situ NMR tool is made and NMR data are acquired using the in situ NMR tool. A spectral analysis is performed on the NMR data, or optionally, the NMR data are digitized and a discrete Fourier transform (DFT) is performed on the digitized NMR data. The modal frequency of the spectral analysis or DFT is determined, and the Larmor frequency for the in situ NMR tool is determined using the modal frequency. The NMR tool is modified to transmit at the determined Larmor frequency and then used to acquire further NMR data.
摘要翻译： 确定原位核磁共振（NMR）工具的拉莫尔频率并用于获得NMR数据。 提供NMR工具并放置在例如井眼中。 进行原位NMR工具的拉莫尔频率的初步估算，并使用原位NMR工具获得NMR数据。 对NMR数据进行光谱分析，或者可选地，NMR数据被数字化，并且对数字化NMR数据进行离散傅里叶变换（DFT）。 确定光谱分析或DFT的模态频率，并使用模态频率确定原位NMR工具的拉莫尔频率。 NMR工具被修改为以确定的拉莫尔频率发射，然后用于获取进一步的NMR数据。
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公开(公告)号：US20130204534A1
公开(公告)日：2013-08-08
申请号：US13749455
申请日：2013-01-24
发明人： Vivek Anand , Robert Freedman , Chanh Cao Minh
摘要： A method of analyzing a subterranean formation may include collecting a plurality of tool responses from different tools and generating a respective theoretical equation relating tool responses for each of the tools to properties of the subterranean formation. The method may also include generating a database having the tool responses stored therein based upon each respective theoretical equation and generating a non-linear mapping function relating at least one of the tool responses to at least one property of the subterranean formation. The method may also include estimating a value for the at least one property based upon the non-linear mapping function.
摘要翻译： 分析地下地层的方法可以包括从不同的工具收集多个工具响应并且产生相应的理论方程，其将每个工具的工具响应与地下地层的性质相关联。 该方法还可以包括基于每个相应的理论方程生成具有存储在其中的工具响应的数据库，并且生成将至少一个工具响应与地下地层的至少一个属性相关联的非线性映射函数。 该方法还可以包括基于非线性映射函数估计至少一个属性的值。
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公开(公告)号：US10024997B2
公开(公告)日：2018-07-17
申请号：US14173405
申请日：2014-02-05
摘要： The Larmor frequency for an in situ nuclear magnetic resonance (NMR) tool is determined and used to acquire NMR data. An NMR tool is provided and placed in situ, for example, in a wellbore. An initial estimate of the Larmor frequency for the in situ NMR tool is made and NMR data are acquired using the in situ NMR tool. A spectral analysis is performed on the NMR data, or optionally, the NMR data are digitized and a discrete Fourier transform (DFT) is performed on the digitized NMR data. The modal frequency of the spectral analysis or DFT is determined, and the Larmor frequency for the in situ NMR tool is determined using the modal frequency. The NMR tool is modified to transmit at the determined Larmor frequency and then used to acquire further NMR data.
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公开(公告)号：US11187825B2
公开(公告)日：2021-11-30
申请号：US15775317
申请日：2016-10-18
发明人： Robert Freedman
摘要： Disclosed herein is a formation evaluation method including estimating a total porosity of an earth formation as a function of bulk density and total nuclear magnetic resonance (NMR) porosity of the earth formation. The total porosity of the earth formation as estimated underrepresents bitumen content. A gas filled porosity of the earth formation is estimated as a function of the bulk density and the total NMR porosity. A kerogen volume of the earth formation is estimated as a function of the gas filled porosity and a total organic carbon content of the earth formation. A bitumen filled total porosity is determined as a function of the estimated kerogen volume and the estimated total porosity of the earth formation. A corrected kerogen volume of the earth formation is determined as a function of the estimated kerogen volume and the estimated total porosity of the earth formation.
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