公开(公告)号：US07088639B2

公开(公告)日：2006-08-08

申请号：US11098010

申请日：2005-04-02

申请人： Joel Walls ,  M. Turhan Taner ,  Jack Dvorkin

发明人： Joel Walls ,  M. Turhan Taner ,  Jack Dvorkin

IPC分类号： G01V1/28 ,  G01V1/00

CPC分类号： G01V1/30

摘要： A method for seismic characterization of subsurface Earth formations includes determining at least one of compressional velocity and shear velocity, and determining reservoir parameters of subsurface Earth formations, at least including density, from data obtained from a wellbore penetrating the formations. A quality factor for the subsurface formations is calculated from the velocity, the density and the water saturation. A synthetic seismogram is calculated from the calculated quality factor and from the velocity and density. The synthetic seismogram is compared to a seismic survey made in the vicinity of the wellbore. At least one parameter is adjusted. The synthetic seismogram is recalculated using the adjusted parameter, and the adjusting, recalculating and comparing are repeated until a difference between the synthetic seismogram and the seismic survey falls below a selected threshold.

公开(公告)号：US20130182819A1

公开(公告)日：2013-07-18

申请号：US13738106

申请日：2013-01-10

申请人： Jack Dvorkin ,  Naum Derzhi ,  Elizabeth Diaz ,  Joel Walls

发明人： Jack Dvorkin ,  Naum Derzhi ,  Elizabeth Diaz ,  Joel Walls

IPC分类号： G01N23/04

CPC分类号： G01N23/046 ,  G01N2223/419

摘要： A method of evaluating a reservoir includes a multi-energy X-ray CT scan of a sample, obtaining bulk density and photoelectric effect index effect for the sample, estimation of at least mineral property using data obtained from at least one of a core gamma scan, a spectral gamma ray scan, an X-ray fluorescence (XRF) analysis, or an X-ray diffraction (XRD) analysis of the sample, and determination of at least one sample property by combining the bulk density, photoelectric effect index, and the at least one mineral property (e.g., total clay content). Reservoir properties, such as one or more of formation brittleness, porosity, organic material content, and permeability, can be determined by the method without need of detailed lab physical measurements or destruction of the sample. A system for evaluating a reservoir also is provided.

摘要翻译： 评估储层的方法包括样品的多能X射线CT扫描，获得样品的体积密度和光电效应指数效应，使用从核心γ扫描中的至少一个获得的至少矿物性质的估计 ，X射线荧光（XRF）分析或X射线衍射（XRD）分析，以及通过将体积密度，光电效应指数和 至少一种矿物性质（例如，总粘土含量）。 通过该方法可以确定储层性质，例如形成脆性，孔隙率，有机材料含量和渗透性中的一种或多种，​​而不需要详细的实验室物理测量或样品的破坏。 还提供了一种用于评估储存器的系统。

公开(公告)号：US08155377B2

公开(公告)日：2012-04-10

申请号：US12276430

申请日：2008-11-24

申请人： Jack Dvorkin ,  Naum Derzhi ,  Meghan Armbruster ,  Qian Fang ,  Zbigniew Wojcik

发明人： Jack Dvorkin ,  Naum Derzhi ,  Meghan Armbruster ,  Qian Fang ,  Zbigniew Wojcik

IPC分类号： G06K9/00 ,  E21B10/02

CPC分类号： G01N23/046 ,  E21B47/00 ,  E21B49/005 ,  G01N2223/419

摘要： A method for estimating a relationship between physical properties of a porous material from a sample thereof includes making a three dimensional tomographic image of the sample of the material. The image is segmented into pixels each representing pore space or rock grains. The image is divided into sub-volumes. A porosity is estimated for each sub-volume. At least one petrophysical parameter is modeled from the image of each sub-volume. A relationship between the porosity and the at least one modeled petrophysical parameter is determined by, e.g., a best-fit statistical method. The relationship and the modeled petrophysical parameter for each sub-volume are stored in a computer or displayed.

摘要翻译： 从样品估计多孔材料的物理性质之间的关系的方法包括制作材料样品的三维断层图像。 图像被分割成像素，分别表示孔隙或岩石颗粒。 图像分为子卷。 估计每个子体积的孔隙率。 至少一个岩石物理参数是从每个子体积的图像建模的。 通过例如最佳拟合统计方法确定孔隙率与至少一个建模的岩石物理参数之间的关系。 每个子体积的关系和建模的岩石物理参数存储在计算机中或显示。

公开(公告)号：US20100131204A1

公开(公告)日：2010-05-27

申请号：US12276431

申请日：2008-11-24

申请人： Jack Dvorkin ,  Naum Derzhi ,  Meghan Armbruster ,  Qian Fang ,  Zbigniew Wojcik

发明人： Jack Dvorkin ,  Naum Derzhi ,  Meghan Armbruster ,  Qian Fang ,  Zbigniew Wojcik

IPC分类号： G01V1/40 ,  G01N15/08

CPC分类号： G01V1/30 ,  G06T7/0004

摘要： A method for determining in-situ relationships between physical properties of a porous medium from a sample thereof includes acquiring a three-dimensional image of the sample and segmenting the image into pixels representing pore space and pixels representing rock grain. A plurality of sub-volumes are selected from the segmented image, and a porosity is calculated for each of the sub-volumes. A digital simulation is conducted on each of the sub-volumes to obtain a selected physical property for the sub-volume. A relationship is determined between porosity and the selected physical property using relationship data comprising the calculated porosity and the simulated physical property for each of the sub-volumes. The method includes at least one of storing and displaying the relationship.

摘要翻译： 一种用于从其样品确定多孔介质的物理性质之间的原位关系的方法包括获取样品的三维图像并将图像分割成表示孔隙的像素和表示岩石颗粒的像素。 从分割图像中选择多个子体积，并且为每个子体积计算孔隙率。 对每个子卷进行数字模拟，以获得子卷的所选物理属性。 使用包括计算的孔隙度和每个子体积的模拟物理性质的关系数据来确定孔隙率和所选物理性质之间的关系。 该方法包括存储和显示关系中的至少一个。

公开(公告)号：US20100128982A1

公开(公告)日：2010-05-27

申请号：US12276952

申请日：2008-11-24

申请人： Jack Dvorkin ,  Naum Derzhi ,  Zbigniew Wojcik

发明人： Jack Dvorkin ,  Naum Derzhi ,  Zbigniew Wojcik

IPC分类号： G06K9/34 ,  G06K9/46

CPC分类号： G06T7/0004 ,  G06T7/11 ,  G06T2207/10081 ,  G06T2207/30108

摘要： A method for estimating at least one elastic-wave-related property of a porous material from a sample thereof includes making a three dimensional tomographic image of the sample of the material. The image is segmented into pixels each representing pore space or rock grain. Bulk modulus and shear modulus of the porous material are determined from the segmented image at a frequency corresponding to mobile fluid. Bulk modulus and shear modulus of the porous material are determined from the segmented image at a frequency corresponding to immobile fluid. The at least one elastic-wave-related property is determined from the mobile fluid and immobile fluid moduli. The method includes at least one of storing and displaying the at least one elastic-wave-related property so determined.

摘要翻译： 从样品估计多孔材料的至少一种弹性波相关性的方法包括制作材料样品的三维断层图像。 图像被分割成像素，分别代表孔隙或岩石颗粒。 多孔材料的体积弹性模量和剪切模量由对应于移动流体的频率的分割图像确定。 多孔材料的体积模量和剪切模量由对应于不动流体的频率的分割图像确定。 从移动流体和固定流体模量确定至少一个弹性波相关性质。 该方法包括存储和显示如此确定的至少一个弹性波相关属性中的至少一个。