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11. 发明授权

US06833698B2 Methods of decoupling diffusion effects from relaxation times to determine properties of porous media containing fluids 失效
标题翻译：将扩散效应与松弛时间分离的方法来确定含多孔介质的流体性质
公开(公告)号：US06833698B2
公开(公告)日：2004-12-21
申请号：US10150284
申请日：2002-05-15
申请人： Boqin Sun , Keh-Jim Dunn
发明人： Boqin Sun , Keh-Jim Dunn
IPC分类号： G01V300
CPC分类号： G01R33/44 , G01N24/081 , G01N24/082 , G01V3/32
摘要： Novel pulse sequences are used to probe the properties of porous media, such as are found in subterranean formations and core samples. This use allows diffusion effects to be uncoupled from the overall T2 relaxation time of the sample. Properties such as internal field gradient and distribution of diffusion coefficients may be determined. A series of pulse sequences are applied to the media to be evaluated. The series of pulse sequences include first and second windows. The first windows include pulse sequences have varying characteristics, such as increasing echo spacing, while the second windows preferably utilize similar pulse sequences which have very small echo spacing. Apparent internal field gradient distribution and apparent diffusion coefficient may be determined as a function of T2 relaxation time. These properties are readily visualized in a two-dimensional map with a first axis being the apparent internal field gradient or alternatively the diffusion coefficient of pore fluids, a second axis being the T2 relaxation times, and the vertical amplitudes being proportional to the proton population. Other properties which may be determined from use of this method include porosity, pore size distribution, oil and water saturation, oil viscosity, oil wettability, and permeability. Also, a method for determining and plotting a T1-MAS 2D spectrum is provided where T1 relaxation time and chemical shift are plotted on x,y axes while intensity of proton population is displayed along a third axis.
摘要翻译：使用新的脉冲序列来探测多孔介质的性质，例如在地下地层和核心样品中发现的。这种使用允许扩散效应与样品的整体T2弛豫时间分离。可以确定诸如内部场梯度和扩散系数的分布的属性。将一系列脉冲序列应用于要评估的介质。该脉冲序列包括第一和第二窗口。第一窗口包括具有不同特征的脉冲序列，例如增加回波间隔，而第二窗口优选地利用具有非常小的回波间隔的类似脉冲序列。可以将视觉内场梯度分布和表观扩散系数确定为T2弛豫时间的函数。这些性质在具有第一轴是表观内场梯度或备选地，孔隙流体的扩散系数，第二轴是T2弛豫时间，垂直幅度与质子群体成比例的二维图中容易地可视化。可以使用该方法确定的其它性质包括孔隙率，孔径分布，油和水饱和度，油粘度，油润湿性和渗透性。此外，提供了用于确定和绘制T1-MAS 2D光谱的方法，其中在x，y轴上绘制T1弛豫时间和化学位移，同时沿着第三轴显示质子群的强度。

12. 发明授权

US09482631B2 Formation core sample holder assembly and testing method for nuclear magnetic resonance measurements 有权
标题翻译：核磁共振测量的核心样品架组装和测试方法
公开(公告)号：US09482631B2
公开(公告)日：2016-11-01
申请号：US13894150
申请日：2013-05-14
申请人： Zheng Yang , Boqin Sun , John S. Zintsmaster , Gerald Latorraca , Ajit R. Pradhan
发明人： Zheng Yang , Boqin Sun , John S. Zintsmaster , Gerald Latorraca , Ajit R. Pradhan
IPC分类号： G01N24/08 , G01R33/30 , G01V3/14 , G01R33/44 , G01V3/32
CPC分类号： G01N24/081 , G01R33/305 , G01R33/448 , G01V3/14 , G01V3/32
摘要： A core sample holder assembly for performing a laboratory magnetic resonance measurement of a core sample taken from a hydrocarbon containing formation is provided. The assembly comprises a pressure chamber provided by a hull and one or more flanges are sealingly coupled with the hull. A flexible core sample holder sleeve is arranged within the pressure chamber and is sealingly coupled with at least one of the flanges. An overburden fluid injection port is in fluid communication with an annular space between the hull and the flexible sleeve and is configured to inject overburden fluid into an annular space between the hull and the flexible sleeve. A pressure regulator is configured to maintain the overburden fluid in the annular space at an elevated pressure. A radio-frequency antenna, within the pressure chamber and wrapped around the sample holder sleeve, is configured to receive an electromagnetic-signal from the core sample. In use, the core sample is arranged substantially within the sleeve.
摘要翻译：提供了一种用于对从含烃地层取出的核心样品进行实验室磁共振测量的核心样品架组件。组件包括由船体提供的压力室，并且一个或多个凸缘与船体密封地联接。柔性芯样品保持器套筒布置在压力室内并与至少一个凸缘密封连接。上覆层流体注入口与船体和柔性套管之间的环形空间流体连通，并且构造成将覆盖层流体注入到船体和柔性套筒之间的环形空间中。压力调节器构造成在环境空间中的上覆层流体在升高的压力下保持。在压力室内并缠绕在样品保持器套筒周围的射频天线被配置为从芯样品接收电磁信号。在使用中，芯样本基本上布置在套筒内。

13. 发明申请

US20140035574A1 SYSTEM AND METHOD FOR ESTIMATING A NUCLEAR MAGNETIC RESONANCE RELAXATION TIME CUTOFF 有权
标题翻译：用于估计核磁共振松弛时间切割的系统和方法
公开(公告)号：US20140035574A1
公开(公告)日：2014-02-06
申请号：US13565994
申请日：2012-08-03
申请人： Boqin Sun , Emmanuel Toumelin
发明人： Boqin Sun , Emmanuel Toumelin
IPC分类号： G01V3/14
CPC分类号： G01V3/14 , Y02A90/344
摘要： A nuclear magnetic resonance relaxation time cutoff between results for a bound-water index of rock and a free-fluid index of the rock is determined. The determination is made based on measured and predicted values for permeability and/or wettability over a set of core plugs. The determination does not require a nuclear magnetic resonance operation performed on the core plugs under irreducible water saturation.
摘要翻译：确定岩石的结合水指数和岩石的自由流体指数的结果之间的核磁共振弛豫时间截断。基于在一组芯塞上的渗透性和/或润湿性的测量值和预测值进行测定。该测定不需要在不可约的水饱和度下对芯塞执行核磁共振操作。

14. 发明申请

US20090157350A1 OBTAINING A PROTON DENSITY DISTRIBUTION FROM NUCLEAR MAGNETIC RESONANCE DATA 审中-公开
标题翻译：从核磁共振数据获得原子密度分布
公开(公告)号：US20090157350A1
公开(公告)日：2009-06-18
申请号：US11954556
申请日：2007-12-12
申请人： Rafael Salazar-Tio , Boqin Sun
发明人： Rafael Salazar-Tio , Boqin Sun
IPC分类号： G06F17/18 , G01R33/20
CPC分类号： G01R33/5617 , G01N24/081 , G01R33/5608 , G01V3/32
摘要： A computer-implemented method enables a proton density distribution to be obtained. In one embodiment, the method comprises acquiring nuclear magnetic resonance data from porous media; inverting the nuclear magnetic resonance data via a global optimization algorithm to determine a proton density distribution within the porous media; and outputting the determined proton density distribution.
摘要翻译：计算机实现的方法能够获得质子密度分布。在一个实施例中，该方法包括从多孔介质获取核磁共振数据; 通过全局优化算法反转核磁共振数据，以确定多孔介质内的质子密度分布; 并输出确定的质子密度分布。

15. 发明申请

US20160169820A1 METHODS FOR QUANTITATIVE CHARACTERIZATION OF ASPHALTENES IN SOLUTIONS USING TWO-DIMENSIONAL LOW-FIELD NMR MEASUREMENT 有权
标题翻译：使用二维低场NMR测量法解决方案中定量表征的方法
公开(公告)号：US20160169820A1
公开(公告)日：2016-06-16
申请号：US14567364
申请日：2014-12-11
申请人： Zheng Yang , Boqin Sun , Ajit Ramchandra Pradhan , Hussein Alboudwarej , Dengen Zhou
发明人： Zheng Yang , Boqin Sun , Ajit Ramchandra Pradhan , Hussein Alboudwarej , Dengen Zhou
IPC分类号： G01N24/08 , G01N33/24 , G01V3/32 , G01R33/50
CPC分类号： G01N24/081 , G01N33/241 , G01R33/445 , G01R33/448 , G01V3/32
摘要： A method for determining the concentration of asphaltenes in a solution is described. A model is first established for estimating the concentration of asphaltenes in a solution based on multiple samples of solutions of asphaltenes in the solvent in which the concentrations are known. The multiple samples have varying concentrations of asphaltenes. The diffusivity and relaxation time are measured for each sample using two-dimensional NMR. The ratio of diffusivity to relaxation time for each sample is then calculated. A linear equation is determined to fit the relationship between the ratio of diffusivity to relaxation time and the asphaltene concentration by weight for the multiple samples, thus creating the model. For a given solution sample for which the concentration of asphaltenes is desired to be determined, diffusivity and relaxation time are determined using two-dimensional NMR, and the ratio of diffusivity to relaxation time is calculated. This ratio is then used with the model, so that the linear equation can be solved for the asphaltene concentration in the given solution sample.
摘要翻译：描述了确定溶液中沥青质浓度的方法。首先建立一种模型，用于根据浓度已知的溶剂中沥青质溶液的多个样品估算溶液中沥青质的浓度。多个样品具有不同浓度的沥青质。使用二维NMR测量每个样品的扩散率和弛豫时间。然后计算每个样品的扩散率与弛豫时间的比率。确定线性方程式，以适应多个样品的扩散系数与松弛时间的比值以及重量的沥青质浓度之间的关系，从而形成模型。对于希望确定沥青质浓度的给定溶液样品，使用二维NMR确定扩散性和弛豫时间，并计算扩散系数与弛豫时间的比率。然后将该比率与模型一起使用，以便可以求解给定溶液样品中沥青质浓度的线性方程。

16. 发明申请

US20130342201A1 SYSTEM AND METHOD FOR DETERMINING MOLECULAR STRUCTURES IN GEOLOGICAL FORMATIONS 有权
标题翻译：用于确定地质构造中分子结构的系统和方法
公开(公告)号：US20130342201A1
公开(公告)日：2013-12-26
申请号：US13530766
申请日：2012-06-22
申请人： Marcus Oliver Wigand , Boqin Sun
发明人： Marcus Oliver Wigand , Boqin Sun
IPC分类号： G01R33/44
CPC分类号： G01R33/4633 , A45C11/20 , A47J47/14 , G01N24/081
摘要： Molecular structures of organic molecules in a geological formation are determined. The organic molecules may include kerogen, coal, and/or other organic molecules. In particular, the technique implmented may operate to convert nuclear magnetic resonance data into a multi-dimensional space that permits identification of molecular structures through comparisons of intensity information across the multi-dimensional space with a cutoff map of the space. This may not only simplify the identification of molecular structures of the organic molecules, but also use exact mathematical model for mixture samples to derive both structural and dynamic parameters plus their variation.
摘要翻译：确定地质构造中有机分子的分子结构。有机分子可以包括油母质，煤和/或其它有机分子。特别地，所涉及的技术可以操作以将核磁共振数据转换成多维空间，其允许通过多维空间中的强度信息与空间的截止图比较来识别分子结构。这可能不仅简化了有机分子的分子结构的鉴定，而且还使用混合样品的精确数学模型来导出结构和动态参数加上它们的变化。

17. 发明申请

US20110066404A1 METHOD FOR CREATING A 3D ROCK REPRESENTATION USING PETROPHYSICAL DATA 有权
标题翻译：使用PETROPHYSICAL数据创建3D岩石表示的方法
公开(公告)号：US20110066404A1
公开(公告)日：2011-03-17
申请号：US12561083
申请日：2009-09-16
申请人： Rafael Salazar-Tio , Boqin Sun
发明人： Rafael Salazar-Tio , Boqin Sun
IPC分类号： G06F17/50 , G06F17/14
CPC分类号： G01V11/00
摘要： The present invention enables the use of a global optimization method for performing joint-inversion of multiple petrophysical data sets, using forward models based on first principle of physics, to generate a 3D rock representation of a subsurface rock structure. The resulting 3D rock representation captures the internal structure, and honors the measured petrophysical properties, of the subsurface rock structure. The 3D rock representation can then be used to predict additional properties not considered in the inversion, to further characterize the subsurface rock structure.
摘要翻译：本发明能够使用全局优化方法来使用基于物理学的第一原理的前向模型来执行多个岩石物理数据集的联合反演，以产生地下岩石结构的3D岩石表示。所得到的3D岩石表征捕获了地下岩石结构的内部结构，并且证明了测量的岩石物理性质。然后可以使用3D岩石表示来预测反演中未考虑的附加属性，以进一步表征地下岩石结构。

18. 发明授权

US08818778B2 Method for creating a 3D rock representation using petrophysical data 有权
标题翻译：使用岩石物理数据创建3D岩石表征的方法
公开(公告)号：US08818778B2
公开(公告)日：2014-08-26
申请号：US12561083
申请日：2009-09-16
申请人： Rafael Salazar-Tio , Boqin Sun
发明人： Rafael Salazar-Tio , Boqin Sun
IPC分类号： G06G7/48 , G01V11/00
CPC分类号： G01V11/00
摘要： The present invention enables the use of a global optimization method for performing joint-inversion of multiple petrophysical data sets, using forward models based on first principle of physics, to generate a 3D rock representation of a subsurface rock structure. The resulting 3D rock representation captures the internal structure, and honors the measured petrophysical properties, of the subsurface rock structure. The 3D rock representation can then be used to predict additional properties not considered in the inversion, to further characterize the subsurface rock structure.
摘要翻译：本发明能够使用全局优化方法来使用基于物理学的第一原理的前向模型来执行多个岩石物理数据集的联合反演，以产生地下岩石结构的3D岩石表示。所得到的3D岩石表征捕获了地下岩石结构的内部结构，并且证明了测量的岩石物理性质。然后可以使用3D岩石表示来预测反演中未考虑的附加属性，以进一步表征地下岩石结构。

19. 发明申请

US20100138157A1 METHOD FOR PROCESSING BOREHOLE LOGS TO ENHANCE THE CONTINUITY OF PHYSICAL PROPERTY MEASUREMENTS OF A SUBSURFACE REGION 审中-公开
标题翻译：处理井眼日志的方法，以提高地表区域的物理性质测量的连续性
公开(公告)号：US20100138157A1
公开(公告)日：2010-06-03
申请号：US12325639
申请日：2008-12-01
申请人： Boqin Sun , Keh-Jim Dunn
发明人： Boqin Sun , Keh-Jim Dunn
IPC分类号： G01V3/32 , G06F19/00
CPC分类号： G01V3/32
摘要： A computer-implemented method and system for processing subsurface logs to enhance the continuity of physical property measurements. The method includes obtaining a set of measurement signals along a spatial or time domain from at least one sensor tool moving through a borehole which has traversed through a subsurface region. The method additionally includes performing a global inversion of the set of measurement signals along the spatial or time domain to determine a set of physical properties of the subsurface region having a smooth variation along the spatial or time domain, wherein the set of physical properties can be utilized to determine characteristics of the subsurface region.
摘要翻译：用于处理地下测井的计算机实现的方法和系统，以增强物理性能测量的连续性。该方法包括从穿过穿过地下区域的钻孔的至少一个传感器工具获得沿着空间或时域的一组测量信号。该方法还包括沿着空间或时域执行该组测量信号的全局反演，以确定具有沿空间或时域的平滑变化的地下区域的一组物理特性，其中物理属性集可以是用于确定地下区域的特征。

20. 发明授权

US06937014B2 Method for obtaining multi-dimensional proton density distributions from a system of nuclear spins 失效
标题翻译：从核自旋系统获得多维质子密度分布的方法
公开(公告)号：US06937014B2
公开(公告)日：2005-08-30
申请号：US10396941
申请日：2003-03-24
申请人： Boqin Sun , Keh-Jim Dunn
发明人： Boqin Sun , Keh-Jim Dunn
IPC分类号： G01R33/44 , G01V3/32 , G01V3/00 , G01R33/20
CPC分类号： G01N24/081 , G01V3/32
摘要： The present invention provides a method for obtaining a multi-dimensional proton density distribution from a system of nuclear spins. A plurality of nuclear magnetic resonance (NMR) data is acquired from a fluid containing porous medium having a system of nuclear spins. A multi-dimensional inversion is performed on the plurality of nuclear magnetic resonance data using an inversion algorithm to solve a mathematical problem employing a single composite kernel to arrive at a multi-dimensional proton density distribution. Ideally, the mathematical problem can be cast in the form of a Fredholm integral of the first kind wherein a two or more kernels can be reduced to a single composite kernel for ease of solution. Preferably, a series of conventional CPMG pulse sequences, using a conventional NMR tool, can be used to excite the system of nuclear spins. The present invention further includes a regression method which reduces computational efforts by retaining only those grid points, and preferably their neighboring grid points, which have non-zero values, during subsequent iterations of solving for the multi-dimensional proton density distribution. This regression process can be repeated until the density distribution is satisfactorily smooth.
摘要翻译：本发明提供从核自旋系统获得多维质子密度分布的方法。从具有核自旋系统的流体容纳多孔介质获取多个核磁共振（NMR）数据。使用反演算法对多个核磁共振数据进行多维反演，以解决使用单个复合核来达到多维质子密度分布的数学问题。理想情况下，数学问题可以以第一种Fredholm积分的形式投射，其中两个或多个内核可以简化为单个复合核，以方便解决。优选地，使用常规NMR工具的一系列常规CPMG脉冲序列可用于激发核自旋系统。本发明还包括一种回归方法，该方法通过在后续迭代求解多维质子密度分布的过程中仅保留具有非零值的那些网格点，最好是其相邻网格点来减少计算努力。可以重复该回归过程，直到密度分布令人满意地平滑。

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