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公开(公告)号：US12105246B2
公开(公告)日：2024-10-01
申请号：US17429771
申请日：2020-02-11
发明人： Ping Zhang , Wael Abdallah , Dean Homan , Gong Li Wang , Tariq Alshaikh Mubarak , Anas Almarzooq
CPC分类号： G01V3/30 , G01N27/048 , G01V3/34 , G01V3/38
摘要： Methods and systems are provided that use resistivity log data to estimate water saturation of formation rock and/or other useful formation parameters (such as CEC) in a manner that accounts for one or more electrically conductive mineral components contained in the formation rock.
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2.发明公开公开(公告)号：US20230375739A1
公开(公告)日：2023-11-23
申请号：US18044622
申请日：2021-09-09
发明人： Gong Li Wang , Dean M. Homan , Ping Zhang , Wael Abdallah , Shouxiang Ma
摘要： A method for estimating resistivity and dielectric constant values of a multi-layer subterranean formation acquiring electromagnetic propagation measurements of the subterranean formation and processing the measurements via inversion to compute the resistivity and dielectric constant values. A one-dimensional formation model is utilized including a plurality of formation layers in which each of the formation layers includes a resistivity value and a dielectric constant value.
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3.发明公开公开(公告)号：US20240201414A1
公开(公告)日：2024-06-20
申请号：US18553628
申请日：2021-04-28
发明人： Ping Zhang , Gong Li Wang , Wael Abdallah , Dean Homan , Shouxiang Ma
CPC分类号： G01V3/38 , E21B44/00 , E21B49/00 , G01V3/30 , E21B2200/20
摘要： A method for characterizing a subterranean formation is provided that involves obtaining resistivity log data measured by a logging-while-drilling electromagnetic tool operated while drilling a wellbore that traverses the subterranean formation, and calculating at least one of a first data value representing water saturation of the subterranean formation and a second data value representing cation exchange capacity (CEC) of the subterranean formation from the resistivity log data. In embodiments, the method can further involve storing at least one of the first data value and the second data value in computer memory, and/or outputting at least one of the first data value and the second data value as part of a log for well placement, formation evaluation. geological modeling, or reservoir management. The first data value and/or the second data value can also be used for geo-steering the drilling of the wellbore.
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公开(公告)号：US20220128726A1
公开(公告)日：2022-04-28
申请号：US17429771
申请日：2020-02-11
发明人： Ping Zhang , Wael Abdallah , Dean Homan , Gong Li Wang , Tariq Alshaikh Mubarak , Anas Almarzooq
摘要： Methods and systems are provided that use resistivity log data to estimate water saturation of formation rock and/or other useful formation parameters (such as CEC) in a manner that accounts for one or more electrically conductive mineral components contained in the formation rock.
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5.发明申请Systems and Methods for Determining Dielectric Constant or Resistivity from Electromagnetic Propagation Measurement Using Contraction Mapping 审中-公开使用收缩映射从电磁传播测量确定介电常数或电阻率的系统和方法公开(公告)号：US20160170069A1
公开(公告)日：2016-06-16
申请号：US14957531
申请日：2015-12-02
发明人： Gong Li Wang , Tianxia Zhao , Keli Sun , Aria Abubakar
摘要： Identifying the dielectric constant and/or the electrical resistivity of part of a geological formation may reveal useful characteristics of the geological formation. This disclosure provides methods, systems, and machine-readable media to determine dielectric constant or electrical resistivity, or both, using contraction mapping. Specifically, contraction mapping may be used with a function of wavenumber k to iteratively solve for values of dielectric constant and electrical resistivity until convergence is achieved. This may allow for convergence to a solution without computing partial derivatives and/or with fewer iterations than previous techniques.
摘要翻译： 识别部分地质构造的介电常数和/或电阻率可能揭示出地质构造的有用特征。 本公开提供了使用收缩映射来确定介电常数或电阻率或两者的方法，系统和机器可读介质。 具体来说，收缩映射可以与波数k的函数一起使用，以迭代地求解介电常数和电阻率的值，直到达到收敛。 这可能允许收敛到解决方案，而不需要计算偏导数和/或比以前的技术更少的迭代。
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6.发明申请Multiaxial Well Logging Instrument Response in Dipping and Crossbedded Formations 审中-公开多轴测井仪器在浸渍和交叉组合中的响应公开(公告)号：US20150276966A1
公开(公告)日：2015-10-01
申请号：US14669683
申请日：2015-03-26
发明人： Gong Li Wang , Thomas Barber , Peter Wu , David F. Allen , Aria Abubakar
摘要： A method for determining resistivity of subsurface formations includes generating an initial model of the formations from multiaxial electromagnetic transimpedance measurements, the model comprising values of vertical resistivity, horizontal resistivity, crossbed dip, crossbed azimuth, and bedding dip and azimuth. Expected measurements generated from the initial model measurements are decomposed into ordinary and extraordinary components. The actual tool measurements are compared to the summation of the expected decomposed measurement components. The initial model is adjusted, the expected decomposed components are recalculated and the foregoing are repeated until the difference between the actual tool measurements and the summation of the expected decomposed components falls below a selected threshold.
摘要翻译： 用于确定地下地层电阻率的方法包括从多轴电磁互阻测量产生地层的初始模型，该模型包括垂直电阻率，水平电阻率，交叉倾角，交叉方位角以及铺垫倾角和方位角的值。 从初始模型测量产生的预期测量值被分解为普通和非凡的组件。 将实际的刀具测量与预期分解的测量组件的总和进行比较。 调整初始模型，重新计算预期的分解组分，并重复上述内容，直到实际工具测量值与预期分解组分的总和之间的差值低于选定的阈值。
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公开(公告)号：US11048012B2
公开(公告)日：2021-06-29
申请号：US16173245
申请日：2018-10-29
摘要： A formation characterization system can include a processor; memory accessibly by the processor; instructions stored in the memory and executable by the processor to instruct the system to: acquire induction measurements in a borehole in a formation using an induction tool; determine dielectric properties of the formation using the induction measurements; and generate a log that characterizes particles in the formation based on the dielectric properties.
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8.发明申请Extended 1D Inversion Of Electromagnetic Measurements For Formation Evaluation 审中-公开电磁测量的扩展1D反演用于形成评估公开(公告)号：US20160047934A1
公开(公告)日：2016-02-18
申请号：US14782149
申请日：2014-04-02
发明人： Gong Li Wang , Thomas D. Barber
摘要： A method to determine at least one formation property of a subterranean formation includes providing a downhole electromagnetic logging tool having at least one transmitter array and one receiver array and acquiring measurements in the formation using the transmitter and receiver arrays of the downhole electromagnetic logging tool. The method further includes performing a first inversion in response to the measurements, wherein at least one of dip or dip azimuth are assumed constant in an inversion zone within the formation to obtain an inverted formation model that comprises at least one of horizontal resistivity (Rh), vertical resistivity (Rv), dip, and dip azimuth. The method includes determining an n-th order partial derivative matrix of at least one of dip or dip azimuth, wherein n is greater than or equal to 1. The method includes performing a second inversion using the determined n-th order partial derivative matrix, wherein at least one of dip and dip azimuth are allowed to vary in the inversion zone, to obtain an updated formation model. The method includes determining the at least one formation property of the formation using the up-dated formation model.
摘要翻译： 确定地下地层的至少一个地层特性的方法包括提供具有至少一个发射器阵列和一个接收器阵列的井下电磁测井工具，并使用井下电磁测井工具的发射器和接收器阵列获取地层中的测量结果。 该方法还包括响应于测量执行第一反演，其中在地层内的反转区域中假定浸入或倾角方位角中的至少一个是恒定的，以获得反向地层模型，其包括水平电阻率（Rh） ，垂直电阻率（Rv），倾角和倾角方位。 该方法包括确定浸入或倾角方位中的至少一个的n阶偏导数矩阵，其中n大于或等于1.该方法包括使用所确定的n阶偏导数矩阵来执行第二反演， 其中允许在反转区域中倾斜和倾斜方位角中的至少一个变化，以获得更新的形成模型。 该方法包括使用更新的地层模型确定地层的至少一个地层性质。
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公开(公告)号：US20190353819A1
公开(公告)日：2019-11-21
申请号：US16396324
申请日：2019-04-26
发明人： Gong Li Wang , John Rasmus , Dean Homan
IPC分类号： G01V3/28
摘要： 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.
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公开(公告)号：US20230184987A1
公开(公告)日：2023-06-15
申请号：US17995209
申请日：2021-03-30
发明人： Gong Li Wang , Dean Homan
摘要： Properties of a geological formation, such as dielectric constant and conductivity, may be determined by a propagation well log data acquired by a propagation well logging tool based at least in part on a relative longitudinal position of two or more receivers of the propagation well logging tool. In some embodiments, the relative longitudinal position of the at least two receivers is based at least in part on a first distance between a first receiver of the at least two receivers and a transmitter of the propagation well logging tool and a second distance between a second receiver of the at least two receivers and the transmitter.
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