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    Systems and methods for determining liquid saturation from overlapping NMR distributions
    2.
    发明授权
    Systems and methods for determining liquid saturation from overlapping NMR distributions 有权

    公开(公告)号：US10852452B2

    公开(公告)日：2020-12-01

    申请号：US16246603

    申请日：2019-01-14

    Applicant: Schlumberger Technology Corporation

    Inventor： Chanh Cao Minh ,  Vikas Jain

    IPC: G01V3/32 ,  G01N24/08 ,  G01V3/14

    Abstract: A liquid saturation may be identified from nuclear magnetic resonance (NMR) data having overlapping peaks indicative of two liquids by, generally, identifying a first endpoint based at least in part on the T2 NMR data for the first liquid, and identifying a second endpoint based at least in part on the T2 NMR data for the second liquid. Then, the liquid saturation is identified by relating a composition of the first liquid for an overlapping distribution region based at least in part on the first endpoint and the second endpoint. In some embodiments, the liquid saturation is identified based on an interpolation between the first endpoint and the second endpoint.

    In-situ Characterization Of Formation Constituents
    4.
    发明申请
    In-situ Characterization Of Formation Constituents 审中-公开
    形成成分的原位表征

    公开(公告)号：US20150015250A1

    公开(公告)日：2015-01-15

    申请号：US14369634

    申请日：2012-12-21

    Applicant: Schlumberger Technology Corporation

    Inventor： Kais B.M. Gzara ,  Vikas Jain

    IPC: G01V3/32

    CPC classification number: G01V3/32 ,  G01N24/08 ,  G01V3/34

    Abstract: A well-logging method for a geological formation having a borehole therein may include collecting a plurality of nuclear magnetic resonance (NMR) snapshots from the borehole indicative of changes in the geological formation and defining NMR data. The method may further include identifying a plurality of fluids within the geological formation based upon the NMR data, determining respective NMR signatures for the identified fluids based upon the NMR data, determining apparent volumes for the identified fluids based upon the NMR signatures, and determining adjusted volumes for the identified fluids based upon the apparent volumes.

    Abstract translation: 用于其中具有钻孔的地质层的测井方法可包括从钻孔收集指示地质构造变化并确定NMR数据的多个核磁共振（NMR）快照。 该方法还可以包括基于NMR数据识别地质构造内的多个流体，基于NMR数据确定所识别的流体的相应NMR特征，基于NMR标记确定所识别的流体的表观体积，以及确定调整后的 基于表观体积确定的流体的体积。

    Methods to Characterize Formation Properties
    7.
    发明申请
    Methods to Characterize Formation Properties 审中-公开
    表征形成性质的方法

    公开(公告)号：US20160170065A1

    公开(公告)日：2016-06-16

    申请号：US14957481

    申请日：2015-12-02

    Applicant: Schlumberger Technology Corporation

    Inventor： Vikas Jain ,  Kais Gzara

    IPC: G01V3/14 ,  G01V3/38 ,  G01N24/08

    CPC classification number: G01V3/14 ,  G01N24/081 ,  G01R33/448 ,  G01R33/4633 ,  G01V1/42 ,  G01V3/24 ,  G01V3/30 ,  G01V3/38

    Abstract: A method for analyzing at least one characteristic of a geological formation may include obtaining measured data for the geological formation based upon a logging tool. Measured data may come from multiple passes or multiple depths of investigation. The method may further include generating a kernel describing a known linear mapping between the measured data and unknown data points representing at least one characteristic of the geological formation, and a redundant dictionary including a plurality of different basis functions expected to span the solution space of the unknown data points. The unknown data points representing the at least one characteristic of the geological formation may be determined from the measured data, the kernel and the redundant dictionary based upon an L1 minimization.

    Abstract translation: 用于分析地质构造的至少一个特征的方法可以包括基于测井工具获得用于地质构造的测量数据。 测量数据可能来自多次通过或多个调查深度。 该方法还可以包括生成描述测量数据和表示地质构造的至少一个特征的未知数据点之间的已知线性映射的内核，以及包括预期跨越所述地质构造的解空间的多个不同基函数的冗余字典 未知数据点。 可以从测量数据，基于L1最小化的内核和冗余字典来确定表示地质构造的至少一个特征的未知数据点。

    FORMATION VOLUMETRIC EVALUATION USING NORMALIZED DIFFERENTIAL DATA
    8.
    发明申请
    FORMATION VOLUMETRIC EVALUATION USING NORMALIZED DIFFERENTIAL DATA 审中-公开
    使用正则化差分数据形成体积评估

    公开(公告)号：US20130338926A1

    公开(公告)日：2013-12-19

    申请号：US13837409

    申请日：2013-03-15

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Kais Gzara ,  Vikas Jain ,  Alan Patrick Hibler

    IPC: E21B47/00

    CPC classification number: E21B47/0003 ,  E21B43/00

    Abstract: A method for determining volumetric data for fluid within a geological formation is provided. The method includes collecting first and second dataset snapshots of the geological formation based upon measurements from the borehole at respective different first and second times and generating a differential dataset based upon the first and second dataset snapshots. Multiple points are determined within the differential dataset, including a first point representing a first displaced fluid, a second point representing a second displaced fluid, and an injected fluid point that corresponds to properties of the injected fluid. A further third point is determined based on at least one other property of the displaced fluid, and a volumetric composition of the displaced fluids is determined based upon the differential dataset, the first point, and second point, and third point.

    Abstract translation: 提供了一种用于确定地质层内流体的体积数据的方法。 该方法包括基于来自钻孔的测量在不同的第一和第二次收集地质地层的第一和第二数据集快照，并基于第一和第二数据集快照生成差异数据集。 在差分数据集内确定多个点，包括表示第一位移流体的第一点，表示第二位移流体的第二点和对应于注入流体的特性的注入流体点。 基于移位的流体的至少一个其他性质确定另外的第三点，并且基于差分数据集，第一点和第二点以及第三点来确定置换的流体的体积组成。

    Identifying formation, matrix and fluid related characteristics from subsurface data using factor analysis
    10.
    发明授权
    Identifying formation, matrix and fluid related characteristics from subsurface data using factor analysis 有权
    使用因子分析识别地下数据的形成，基质和流体相关特征

    公开(公告)号：US09223055B2

    公开(公告)日：2015-12-29

    申请号：US13658502

    申请日：2012-10-23

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Vikas Jain ,  Chanh Cao Minh ,  Denis Heliot ,  Nicholas Heaton ,  Kais Gzara

    IPC: G01V3/14 ,  G01V5/06 ,  G01V11/00 ,  G01V3/32

    CPC classification number: G01V11/00 ,  G01V3/32

    Abstract: A method of interpreting petrophysical measurement data include arranging measurements of at least one physical property of formations into a matrix representing the measurements and selecting a range of number of unobserved factors or latent variables for factor analysis. Factor analysis is performed on the measurement matrix and comprises performing factorization of measurements matrix into a number of factorsand performing rotation of the factorization results. Whether the factor loadings for each factor have achieved a “simple structure” is determined and either each of the selected number of factors is associated with a physical parameter of the formations, or one is added to the number of factors and factor analysis and rotation are repeated until factor loadings of all factors have achieved “simple structure” such that the each of the number of factors is associated with a physical property of the formations.

    Abstract translation: 解释岩石物理测量数据的方法，包括安排地层中的至少一个物理性质的测量结果为矩阵表示所述测量和选择的范围内未观察到的因素或进行因子分析隐变量的数量。 在测量矩阵上执行因子分析，并且包括将测量矩阵分解成多个因素并执行因式分解结果的旋转。 是否为每个因素的因素负荷量已经实现了“简单结构”被确定和任一各要素的选定数目的与所述地层的物理参数相关联，或者一个被添加到的因素的数量和因子分析和旋转 重复直到所有因素的因子加载已经达到“简单结构”，使得每个因素的数量与地层的物理性质相关联。

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