公开(公告)号：US07565246B2

公开(公告)日：2009-07-21

申请号：US11689887

申请日：2007-03-22

申请人： Sheng Fang ,  Songhua Chen

发明人： Sheng Fang ,  Songhua Chen

IPC分类号： G01V5/04

CPC分类号： G01R33/5615 ,  G01N24/081 ,  G01R33/448 ,  G01V3/32

摘要： A method for determining fluid saturation in a formation at a plurality of radial depths near a wellbore, the method including: obtaining multi-frequency nuclear magnetic resonance (NMR) response data for the formation; and processing the data to determine simultaneously the fluid saturation at each radial depth. A computer program product is provided.

摘要翻译： 一种用于确定井眼附近的多个径向深度处的地层中的流体饱和度的方法，所述方法包括：获得用于地层的多频核磁共振（NMR）响应数据; 并处理数据以同时确定每个径向深度处的流体饱和度。 提供计算机程序产品。

公开(公告)号：US20080234937A1

公开(公告)日：2008-09-25

申请号：US11689887

申请日：2007-03-22

申请人： Sheng Fang ,  Songhua Chen

发明人： Sheng Fang ,  Songhua Chen

IPC分类号： G01V3/38 ,  G01V3/14

CPC分类号： G01R33/5615 ,  G01N24/081 ,  G01R33/448 ,  G01V3/32

摘要： A method for determining fluid saturation in a formation at a plurality of radial depths near a wellbore, the method including: obtaining multi-frequency nuclear magnetic resonance (NMR) response data for the formation; and processing the data to determine simultaneously the fluid saturation at each radial depth. A computer program product is provided.

摘要翻译： 一种用于确定井眼附近的多个径向深度处的地层中的流体饱和度的方法，所述方法包括：获得用于地层的多频核磁共振（NMR）响应数据; 并处理数据以同时确定每个径向深度处的流体饱和度。 提供计算机程序产品。

公开(公告)号：US07253617B1

公开(公告)日：2007-08-07

申请号：US11376046

申请日：2006-03-15

申请人： Songhua Chen ,  Sheng Fang ,  Mike Gillen ,  Mette Stengaard Munkholm ,  Wei Shao

发明人： Songhua Chen ,  Sheng Fang ,  Mike Gillen ,  Mette Stengaard Munkholm ,  Wei Shao

IPC分类号： G01V3/00

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/448

摘要： A method for obtaining a parameter of interest relating to a region investigated by a nuclear magnetic resonance (NMR) tool and a non-NMR tool is disclosed. Data arising from the NMR tool is acquired, and data arising from the non-NMR tool is acquired. A solution equation is utilized for NMR signal intensity, the solution equation being functionally related to the NMR data, and a solution constraint is utilized based at least partially on the non-NMR data. The solution equation is solved for the signal intensity subject to the solution constraint, wherein the solving provides information relating to the parameter of interest.

摘要翻译： 公开了一种获得与由核磁共振（NMR）工具和非NMR工具研究的区域相关的参数的方法。 获取由NMR工具产生的数据，并且获得由非NMR工具产生的数据。 解决方程用于NMR信号强度，溶液方程在功能上与NMR数据相关，并且至少部分地基于非NMR数据使用溶液约束。 求解方程式对于解决约束的信号强度，其中求解提供与感兴趣参数有关的信息。

公开(公告)号：US09658359B2

公开(公告)日：2017-05-23

申请号：US14131815

申请日：2011-07-12

申请人： Ron Dirksen ,  Songhua Chen

发明人： Ron Dirksen ,  Songhua Chen

IPC分类号： G01V3/00 ,  G01V3/32 ,  E21B43/26 ,  E21B49/00

CPC分类号： G01V3/32 ,  E21B43/26 ,  E21B49/008

摘要： Formation testing systems and methods may inject fluids into a formation to initiate fractures and facilitate measurements of various formation properties. In accordance with certain disclosed embodiments, the injection tools are further provided with nuclear magnetic resonance (NMR) sensors to monitor the injected fluids and provide measurements of near-borehole fracture orientations and volumes. Contrast agents and/or magnetic resonance imaging (MRI) techniques may be employed. The fluid injection may occur via an extendible isolation pad, via a fracturing jet, or via an injection port in an isolated region of the borehole. The systems may employ pressure monitoring in conjunction with the NMR sensors to further enhance estimates of formation and fracture properties.

公开(公告)号：US08610431B2

公开(公告)日：2013-12-17

申请号：US13012929

申请日：2011-01-25

申请人： Songhua Chen ,  Daniel Georgi

发明人： Songhua Chen ,  Daniel Georgi

IPC分类号： G01V3/00

CPC分类号： G01V3/32

摘要： An apparatus for estimating a property of an earth formation penetrated by a borehole, the apparatus includes: a carrier configured to be conveyed through the borehole; a nuclear magnetic resonance (NMR) instrument disposed at the carrier and configured to perform an NMR measurement on a volume sensitive to the NMR measurement; and a contrast agent disposed in the volume and comprising particles that form a suspension in a liquid, the suspension of particles being configured increase a magnetic field gradient of at least one earth formation material in the volume to change an NMR relaxation time constant of the at least one earth formation material; wherein the NMR measurement on the volume containing the at least one earth formation material and the contrast agent is used to estimate the property.

摘要翻译： 一种用于估计由钻孔穿透的地层的性质的装置，所述装置包括：构造成被输送通过所述钻孔的载体; 设置在载体上并被配置为对对NMR测量敏感的体积进行NMR测量的核磁共振（NMR）仪器; 以及设置在体积中并包含在液体中形成悬浮液的颗粒的造影剂，构造的颗粒悬浮液增加体积中的至少一种地球形成材料的磁场梯度，以改变在该体积中的NMR弛豫时间常数 至少一个地层材料; 其中使用包含至少一种地球形成材料和造影剂的体积上的NMR测量来估计该性质。

公开(公告)号：US08195399B2

公开(公告)日：2012-06-05

申请号：US12053988

申请日：2008-03-24

申请人： Mikhail N. Gladkikh ,  Songhua Chen ,  Jiansheng Chen

发明人： Mikhail N. Gladkikh ,  Songhua Chen ,  Jiansheng Chen

IPC分类号： G01V1/40 ,  G01V3/38

CPC分类号： G01V11/00 ,  G01V3/32 ,  G01V5/04

摘要： The grain size distribution of a pore-scale geometric model of a clastic earth formation are adjusted so that the NMR relaxation time distribution output of the model matches a measured NMR distribution, and an acoustic velocity output of the model matches a measured acoustic velocity (compressional and/or shear). Fluid drainage and imbibing can be simulated. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

摘要翻译： 调整碎屑岩地层的孔隙尺度几何模型的粒度分布，使得模型的NMR弛豫时间分布输出与测量的NMR分布相匹配，并且模型的声速输出与测得的声速匹配（压缩 和/或剪切）。 可以模拟流体排水和吸水。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。

公开(公告)号：US20120101732A1

公开(公告)日：2012-04-26

申请号：US13267140

申请日：2011-10-06

申请人： Chun Lan ,  Songhua Chen ,  Fabio Brambilla

发明人： Chun Lan ,  Songhua Chen ,  Fabio Brambilla

IPC分类号： G06F19/00

CPC分类号： G01N24/081

摘要： NMR porosity measurements made in a gas free-formation are used to calibrate acoustic measurements. The calibration parameters are then used in conjunction with estimates of shale content to provide improved estimates of formation porosity in shaly intervals which may include a gas.

摘要翻译： 使用无气体形成的NMR孔隙度测量来校准声学测量。 然后将校准参数与页岩含量的估计结合使用，以提供可能包括气体的泥质间隔中的地层孔隙度的改进估计。

公开(公告)号：US20120092007A1

公开(公告)日：2012-04-19

申请号：US12971740

申请日：2010-12-17

申请人： Lilong Li ,  Songhua Chen ,  Carl M. Edwards

发明人： Lilong Li ,  Songhua Chen ,  Carl M. Edwards

IPC分类号： G01R33/44 ,  G01F1/56

CPC分类号： G01N24/081 ,  G01F1/716 ,  G01F1/74 ,  G01N24/082 ,  G01R33/445

摘要： A method and apparatus for estimating a flow rate of a phase of a multiphase fluid is disclosed. In the first method, nuclei in the fluid are polarized over two distances and a measured magnetization gives the relative fraction of two components of the fluid for a selected velocity. In the second method, nuclei in the fluid are polarized over a specified distance and measurements of the decay of spin echo signals is used to give the relative fraction of two components of the fluid for the selected velocity.

摘要翻译： 公开了一种用于估计多相流体的相的流量的方法和装置。 在第一种方法中，流体中的核在两个距离上被极化，并且测量的磁化给出了所选流速的流体的两个分量的相对分数。 在第二种方法中，流体中的核在一定距离上被极化，并且使用自旋回波信号衰减的测量值来给出所选速度的流体的两个分量的相对分数。

公开(公告)号：US08131469B2

公开(公告)日：2012-03-06

申请号：US12245121

申请日：2008-10-03

申请人： Songhua Chen ,  Wei Shao

发明人： Songhua Chen ,  Wei Shao

IPC分类号： G01V1/40

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/50

摘要： A method for obtaining a parameter of interest related to an earth formation, the method including: obtaining nuclear magnetic resonance (NMR) data from an NMR tool investigating the earth formation with a plurality of pulse sequences of radio frequency energy, each pulse sequence having a unique frequency, a first train of pulses having a first interecho time (TE1) and a second train of pulses having a second interecho time (TE2) different from the first interecho time; relating the NMR data to a partial porosity at points to establish an NMR response model; solving the NMR response model to calculate the partial porosity at each of the points in the earth formation; summing the partial porosity for each of the points corresponding to each depth of investigation to provide a pore volume; and associating each pore volume with the corresponding depth of investigation to provide the parameter of interest.

摘要翻译： 一种用于获得与地球相关的感兴趣参数的方法，所述方法包括：利用多个射频能量的脉冲序列从研究地层的NMR工具获得核磁共振（NMR）数据，每个脉冲序列具有 唯一频率，具有第一相互作用时间（TE1）和第二脉冲序列的第一脉冲序列具有不同于第一相互间隔时间的第二相互作用时间（TE2）; 将NMR数据与点处的部分孔隙度相关联，以建立NMR响应模型; 解决NMR响应模型，计算地层中每个点的部分孔隙度; 将与每个调查深度相对应的每个点的部分孔隙率相加以提供孔体积; 并将每个孔体积与相应的调查深度相关联以提供感兴趣的参数。

公开(公告)号：US08115481B2

公开(公告)日：2012-02-14

申请号：US12177246

申请日：2008-07-22

申请人： Songhua Chen

发明人： Songhua Chen

IPC分类号： G01V3/00 ,  G01R33/20

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3808 ,  Y02A90/344

摘要： A method for analytically separating properties of hydrocarbon materials from other materials in a downhole environment, the method including: performing nuclear magnetic resonance (NMR) measurements downhole; determining a signal for sodium-23 (23Na) from the NMR measurements; and associating the 23Na signal with the other materials. A computer program product, an apparatus and additional methods are provided.

摘要翻译： 一种用于在井下环境中分析烃物质与其他材料的性质的方法，所述方法包括：在井下进行核磁共振（NMR）测量; 从NMR测量确定钠-23（23Na）的信号; 并将23Na信号与其他材料相关联。 提供了一种计算机程序产品，装置和附加方法。