公开(公告)号：US20160370480A1

公开(公告)日：2016-12-22

申请号：US15122376

申请日：2015-02-27

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Sushil Shetty ,  John Rasmus ,  Christopher Edward Morriss ,  Koji Ito ,  Shahzad Asif ,  Vittorio Picco

IPC: G01V1/30 ,  G01V1/34

CPC classification number: G01V1/30 ,  G01V1/34 ,  G01V1/50 ,  G01V3/18 ,  G01V5/04

Abstract: A method for automatic interpretation of bulls-eye and sinusoidal features observed in LWD images is disclosed. In some embodiments, the method includes an automatic workflow for extracting smooth contours from images that demarcate boundaries of structural features, followed by projection of the contours to three-dimensional (3D) point clouds in the well coordinate system for structural interpretation. The method may characterize both sinusoidal features and bulls-eye features, taking into account variations of formation dip/azimuth, or well inclination/azimuth, on the topology of a structural feature. The disclosed method may be sufficiently fast for use in real-time analysis and interpretation, or to provide constraints for physics-based data inversion processing.

Abstract translation: 公开了一种用于自动解释LWD图像中观察到的多眼和正弦特征的方法。 在一些实施例中，该方法包括用于从划分结构特征的边界的图像提取平滑轮廓的自动工作流程，随后将轮廓投影到用于结构解释的井坐标系中的三维（3D）点云。 考虑到结构特征的拓扑结构的地层倾斜/方位角或井倾角/方位角的变化，该方法可以表征正弦特征和公牛眼特征。 所公开的方法可以足够快以用于实时分析和解释，或为基于物理的数据反演处理提供约束。

公开(公告)号：US20160187521A1

公开(公告)日：2016-06-30

申请号：US14827632

申请日：2015-08-17

Applicant: Schlumberger Technology Corporation

Inventor： Dean Homan ,  John Rasmus ,  Gerald Minerbo ,  Siddharth Misra ,  Aditya Gupta

IPC: G01V3/12 ,  G01V3/38 ,  G01V3/30

CPC classification number: G01V3/12 ,  G01N33/24 ,  G01V3/28 ,  G01V3/30 ,  G01V3/38

Abstract: An electromagnetic measurement tool for making multi-frequency, full tensor, complex, electromagnetic measurements includes a triaxial transmitter and a triaxial receiver deployed on a tubular member. An electronic module is configured to obtain electromagnetic measurements at four or more distinct frequencies. The measurement tool may be used for various applications including obtaining a resistivity of sand layers in an alternating shale-sand formation; computing a dielectric permittivity, a conductivity anisotropy, and/or a permittivity anisotropy of a formation sample; and/or identifying formation mineralization including discriminating between pyrite and graphite inclusions and/or computing weight percent graphite and/or pyrite in the formation sample.

Abstract translation: 用于制造多频，全张力，复杂的电磁测量的电磁测量工具包括三轴发射器和部署在管状构件上的三轴接收器。 电子模块被配置为以四个或更多个不同的频率获得电磁测量。 测量工具可用于各种应用，包括在交替的页岩砂层中获得砂层的电阻率; 计算形成样品的介电常数，导电率各向异性和/或介电常数各向异性; 和/或识别地层矿化，包括区分黄铁矿和石墨夹杂物和/或计算地层样品中石墨和/或黄铁矿的重量百分比。

公开(公告)号：US20160186556A1

公开(公告)日：2016-06-30

申请号：US14975710

申请日：2015-12-18

Applicant: Schlumberger Technology Corporation

Inventor： John Rasmus ,  Richard E. Lewis ,  David Handwerger ,  Jack LaVigne

IPC: E21B49/00 ,  E21B47/00 ,  G06F17/11

CPC classification number: G06F17/11 ,  G01V99/00

Abstract: A method and system for evaluation of a hydrocarbon-bearing shale formation employs a data processing system that defines a response model that relates first data representing measured petrophysical properties of the shale formation at a given location to second data representing volume fractions for a particular set of formation components at the given location. The first data includes hydrogen index at the given location, and the particular set of formation components of the second data include a number of mineral components and a number of hydrocarbon-bearing components. The hydrocarbon-bearing components include at least one kerogen component. A computation solver processes the response model along with the first data to solve for the second data. The solved second data representing the volume fraction of the at least one kerogen component is processed to derive at least one ratio that is indicative of kerogen maturity at the given location.

Abstract translation: 用于评估含烃页岩层的方法和系统采用数据处理系统，其定义响应模型，其将表示在给定位置处的页岩层的测量的岩石物理性质的第一数据与表示特定组的页岩层的体积分数的第二数据相关联 在给定位置的地层构件。 第一数据包括在给定位置处的氢指数，并且第二数据的特定形成组分包括多个矿物组分和多个含烃组分。 含烃组分包括至少一种干酪根组分。 计算解算器将响应模型与第一数据一起处理以解决第二数据。 处理表示至少一种干酪根组分的体积分数的所解决的第二数据，以产生指示给定位置处的干酪根成熟度的至少一个比率。

公开(公告)号：US20140353037A1

公开(公告)日：2014-12-04

申请号：US14284668

申请日：2014-05-22

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： John Rasmus ,  George Bordakov

IPC: E21B44/00

CPC classification number: E21B47/04

Abstract: A method includes accepting as input to a processor measurements of a characteristic of a subsurface formation made at a plurality of spaced apart positions along a pipe string moved along a wellbore. Measurements are made of pipe string depth in the wellbore from the Earth's surface. The measurements of pipe string depth include measurements of apparent depth of each of the spaced apart locations. The subsurface formation is identified from the measurements of the characteristic. A true depth of the subsurface formation is made using the measurements of pipe string depth and apparent depth of the formation from each of the spaced apart positions. A record of measurements of the characteristic with respect to depth corrected for changes in length of the pipe string caused by axial forces along the pipe string is generated.

Abstract translation: 一种方法包括接受处理器沿沿着井眼移动的管柱的多个间隔位置处形成的地下地层的特性的输入的输入。 测量来自地球表面的井眼中的管柱深度。 管柱深度的测量包括每个间隔开的位置的表观深度的测量。 从特征的测量中识别地下地层。 使用从每个间隔开的位置的管柱深度和地层的表观深度的测量来进行地下地层的真实深度。 产生相对于沿着管柱的轴向力引起的管柱长度变化校正的特性的测量记录。

公开(公告)号：US11346833B2

公开(公告)日：2022-05-31

申请号：US16250307

申请日：2019-01-17

Applicant: Schlumberger Technology Corporation

Inventor： Vitor Villar De Andrade E Silva ,  John Rasmus

IPC: G01N33/28 ,  E21B43/34 ,  G01V5/00

Abstract: A method can include receiving measurements of a fluid mixture where the measurements are acquired by at least one downhole tool; performing a multiphysics inversion of the measurements to generate nuclear parameter values for the fluid mixture; performing a multivariate interpolation using the generated nuclear parameter values that accounts for intermolecular interactions in the fluid mixture; and determining a composition of the fluid mixture based on the multivariate interpolation.

公开(公告)号：US11340375B2

公开(公告)日：2022-05-24

申请号：US16120843

申请日：2018-09-04

Applicant: Schlumberger Technology Corporation

Inventor： Dean M. Homan ,  John Rasmus ,  Siddharth Misra

IPC: G01V3/12 ,  G01V3/28 ,  G01N33/24 ,  G01V3/30 ,  G01V3/38

Abstract: An electromagnetic measurement tool for making multi-frequency, full tensor, complex, electromagnetic measurements includes a triaxial transmitter and a triaxial receiver deployed on a tubular member. An electronic module is configured to obtain electromagnetic measurements at four or more distinct frequencies. The measurement tool may be used for various applications including obtaining a resistivity of sand layers in an alternating shale-sand formation; computing a dielectric permittivity, a conductivity anisotropy, and/or a permittivity anisotropy of a formation sample; and/or identifying formation mineralization including discriminating between pyrite and graphite inclusions and/or computing weight percent graphite and/or pyrite in the formation sample.

公开(公告)号：US20210033746A1

公开(公告)日：2021-02-04

申请号：US16940492

申请日：2020-07-28

Applicant: Schlumberger Technology Corporation

Inventor： Siddharth Misra ,  Dean Homan ,  Yuteng Jin ,  John Rasmus

IPC: G01V3/38 ,  G01V3/12 ,  G01V3/30

Abstract: Aspects of the present disclosure relate to a method for determining a wettability of one or more types of solid particles within a geological formation. The method may include receiving a plurality of electromagnetic measurements within a frequency range from an electromagnetic well-logging tool. The method may also include determining a contact angle associated with at least one type of solid particles within the geological formation using the electromagnetic measurements.

公开(公告)号：US20190353819A1

公开(公告)日：2019-11-21

申请号：US16396324

申请日：2019-04-26

Applicant: Schlumberger Technology Corporation

Inventor： Gong Li Wang ,  John Rasmus ,  Dean Homan

IPC: G01V3/28

Abstract: The highly valuable properties of resistivity and dielectric constant of a geological formation may be determined using an induction measurement, even for a geological formation with bed boundary or dipping effects, using a one-dimensional (1D) formation model. Induction measurements may be obtained in a wellbore through the geological formation using one or more downhole tools. One or more processors may be used to perform an inversion to estimate resistivity and dielectric constant values of the geological formation. The inversion may be performed using the induction measurements and a one-dimensional model that includes a number of geological layers.

公开(公告)号：US10466375B2

公开(公告)日：2019-11-05

申请号：US15122376

申请日：2015-02-27

Applicant: Schlumberger Technology Corporation

Inventor： Sushil Shetty ,  John Rasmus ,  Christopher Edward Morriss ,  Koji Ito ,  Shahzad Asif ,  Vittorio Picco

IPC: G01V1/30 ,  G01V1/50 ,  G01V1/34 ,  G01V3/18 ,  G01V5/04

Abstract: A method for automatic interpretation of bulls-eye and sinusoidal features observed in LWD images is disclosed. In some embodiments, the method includes an automatic workflow for extracting smooth contours from images that demarcate boundaries of structural features, followed by projection of the contours to three-dimensional (3D) point clouds in the well coordinate system for structural interpretation. The method may characterize both sinusoidal features and bulls-eye features, taking into account variations of formation dip/azimuth, or well inclination/azimuth, on the topology of a structural feature. The disclosed method may be sufficiently fast for use in real-time analysis and interpretation, or to provide constraints for physics-based data inversion processing.

公开(公告)号：US10386529B2

公开(公告)日：2019-08-20

申请号：US14944312

申请日：2015-11-18

Applicant: Schlumberger Technology Corporation

Inventor： Siddharth Misra ,  John Rasmus ,  Dean Homan ,  Carlos Torres-Verdin

IPC: G01V3/38 ,  G01V11/00 ,  G01V3/30 ,  G01F1/74

Abstract: A method for determining a level of organic maturity of a shale gas formation includes inverting multifrequency complex conductivity data to estimate a volume fraction of graphite, turbostatic carbon nanostructures, and pyrite. The inversion is validated using estimates of the volume fraction of graphite, turbostatic carbon nanostructures, and pyrite. The volume fraction of graphite and turbostatic carbon nanostructures is correlated to a level of organic maturity log of the shale gas formation. The level of organic maturity log is validated using sulfur content obtained from pyrolysis or vitrinite reflectance. A variation of an electromagnetic response due to the volume fraction of graphite, turbostatic carbon nanostructures, and pyrite is quantified. The electromagnetic response is modified by removing the quantified variation to obtain resistivity and permittivity values.