公开(公告)号：US20160245080A1

公开(公告)日：2016-08-25

申请号：US15026230

申请日：2014-09-30

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Keli Sun ,  Dzevat Omeragic ,  Steve F. Crary

IPC: E21B49/00 ,  E21B47/022 ,  G01V99/00 ,  G01V3/38 ,  G01V3/26

CPC classification number: E21B49/00 ,  E21B47/02216 ,  G01V3/18 ,  G01V3/26 ,  G01V3/38 ,  G01V99/005

Abstract: Techniques for log squaring using both directional and non-directional electromagnetic measurements are disclosed. The techniques described herein can be used for determining bed boundary locations and assigning resistivity values to each layer in a layered earth model, regardless of well deviation. Potential bed boundary locations can be derived from both directional and non-directional electromagnetic measurement data. The bed boundary locations from the directional and non-directional measurements can then be consolidated using a weighted averaging scheme, where weight can be dependent based on apparent formation dip. By combining the results from both directional and non-directional measurements, the log squaring techniques described herein can be used in most wells regardless of the well angle (the angle can be arbitrary). Once bed boundaries are selected, formation properties, such as horizontal resistivity (Rh) and vertical resistivity (Rv) can be assigned to the model layers.

Abstract translation: 公开了使用定向和非定向电磁测量的对数平方的技术。 本文描述的技术可以用于确定床边界位置并且在层状地球模型中为每个层分配电阻率值，而不管井偏差。 潜在的床边界位置可以从定向和非定向电磁测量数据中导出。 然后可以使用加权平均方案来巩固来自定向和非方向测量的床边界位置，其中权重可以基于表观地层倾角而依赖。 通过组合来自定向和非方向测量的结果，无论井角如何（角度可以是任意的），本文所述的对数平方技术可以在大多数井中使用。 一旦选择了床边界，就可以为模型层分配诸如水平电阻率（Rh）和垂直电阻率（Rv）的形成特性。

公开(公告)号：US20230041525A1

公开(公告)日：2023-02-09

申请号：US17758812

申请日：2021-01-22

Applicant: Schlumberger Technology Corporation

Inventor： Xiao Bo Hong ,  Keli Sun ,  Koji Ito ,  Xiaoyan Zhong

IPC: G01V99/00 ,  G06N20/20 ,  G01V1/46

Abstract: A method can include receiving data for a geologic region; based at least in part on the data, selecting a model from a plurality of models using a trained machine learning model, and inverting the data using the selected model to determine parameters of the selected model.

公开(公告)号：US20160237801A1

公开(公告)日：2016-08-18

申请号：US15026232

申请日：2014-10-01

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Keli Sun ,  Koji Ito ,  Christopher E. Morriss ,  Roger Griffiths ,  Steve F. Crary ,  Shahzad A. Asif

IPC: E21B44/00 ,  E21B7/06 ,  E21B47/12 ,  E21B49/00 ,  E21B47/02

CPC classification number: E21B44/00 ,  E21B7/06 ,  E21B44/005 ,  E21B47/02 ,  E21B47/12 ,  E21B49/00

Abstract: Methods, computer-readable media, and systems are disclosed for applying 1D processing in a non-1D formation. In some embodiments, a 3D model or curtain section of a subsurface earth formation may be obtained. A processing window within the 3D model or curtain that is suitable for 1D inversion processing is determined, and a local 1D model for the processing window is built. A 1D inversion is performed on the local 1D model, and inverted formation parameters are used to update the 3D model or curtain section.

Abstract translation: 公开了用于在非1D形式中应用1D处理的方法，计算机可读介质和系统。 在一些实施例中，可以获得地下地层的3D模型或窗帘部分。 确定适用于1D反演处理的3D模型或窗帘内的处理窗口，构建处理窗口的局部1D模型。 对本地1D模型进行1D反演，并使用反演形成参数来更新3D模型或窗帘部分。

公开(公告)号：US20140149040A1

公开(公告)日：2014-05-29

申请号：US13874275

申请日：2013-04-30

Applicant: Schlumberger Technology Corporation

Inventor： Dzevat Omeragic ,  Keli Sun ,  Qiming Li ,  Tarek M. Habashy

IPC: G01V3/20

CPC classification number: G01V3/20 ,  G01V3/28

Abstract: A multi-step electromagnetic inversion method is provided for determining formation resistivity, anisotropy and dip. An electromagnetic logging tool is used to obtain non-directional, anisotropy, and directional (including symmetrized and anti-symmetrized resistivity measurements) in a formation using an electromagnetic logging tool. Bed boundaries of the formation are first identified. A horizontal resistivity profile is obtained using the non-directional resistivity measurements, and a vertical resistivity profile is obtained using the anisotropy resistivity measurements. The vertical resistivity profile is improved using the directional resistivity measurements, while dip values are also obtained via an inversion using the directional resistivity measurements. Then, an inversion for each of vertical resistivity, horizontal resistivity, dip values, and bed boundaries is performed using all of the non-directional, anisotropy, and directional resistivity measurements to obtain a formation model.

Abstract translation: 提供了一种用于确定地层电阻率，各向异性和倾角的多步电磁反演方法。 电磁测井工具用于使用电磁测井仪在地层中获得无方向性，各向异性和方向性（包括对称和抗对称电阻率测量）。 首先确定地层的床边界。 使用非方向电阻率测量获得水平电阻率分布，并且使用各向异性电阻率测量获得垂直电阻率分布。 使用方向电阻率测量提高了垂直电阻率分布，而通过使用方向电阻率测量的反演也获得了倾角值。 然后，使用所有非方向性，各向异性和方向电阻率测量来执行垂直电阻率，水平电阻率，浸渍值和床边界中的每一个的倒置以获得形成模型。

公开(公告)号：US09945977B2

公开(公告)日：2018-04-17

申请号：US15026234

申请日：2014-10-02

Applicant: Schlumberger Technology Corporation

Inventor： Keli Sun ,  Roger Griffiths ,  Steve Crary ,  Christopher Morriss ,  Koji Ito

IPC: G01V3/00 ,  G01V3/28 ,  G01V3/30 ,  G01V3/38

CPC classification number: G01V3/28 ,  G01V3/30 ,  G01V3/38

Abstract: Embodiments set forth in this disclosure providing techniques for determining formation parameters, such as horizontal resistivity (Rh), vertical resistivity (Rv), and dip, in high angle and horizontal wells using non-directional resistivity measurements. For example, a method is provided that may include using an electromagnetic logging tool to acquire non-directional resistivity measurements in a wellbore of a high angle or horizontal well. The method may also include defining a processing window that corresponds to a measurement point of the electromagnetic logging tool along a well trajectory that intersects a at least one bed boundary between two layers of a subsurface formation. The method may also include defining a formation structure and defining an initial set of formation parameters for each layer in the formation structure. Furthermore, the method may include inverting the formation parameters for each layer.

公开(公告)号：US20160170069A1

公开(公告)日：2016-06-16

申请号：US14957531

申请日：2015-12-02

Applicant: Schlumberger Technology Corporation

Inventor： Gong Li Wang ,  Tianxia Zhao ,  Keli Sun ,  Aria Abubakar

IPC: G01V3/30 ,  E21B49/00 ,  G01V3/38

CPC classification number: E21B49/00 ,  G01V3/28 ,  G01V3/38

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20250110253A1

公开(公告)日：2025-04-03

申请号：US18905669

申请日：2024-10-03

Applicant: Schlumberger Technology Corporation

Inventor： Keli Sun ,  Hui Xie ,  Xiaoyan Zhong ,  Kong Hauw Sarwa Bakti Tan ,  Ettore Mirto ,  Kent David Harms ,  Xiao Bo Hong ,  Pontus Loviken ,  Gordana Draskovic ,  Thanh Nhan Nguyen ,  Josselin Kherroubi

IPC: G01V3/38 ,  G01V3/30

Abstract: A method for estimating EM measurement uncertainty includes evaluating EM logging measurements with a trained machine learning model to estimate the measurement uncertainties of the EM logging measurements. The trained machine learning model is trained using a training data set made up of modeled EM logging measurements and corresponding measurement uncertainties.

公开(公告)号：US20230393299A1

公开(公告)日：2023-12-07

申请号：US18248880

申请日：2021-11-10

Applicant: Schlumberger Technology Corporation

Inventor： Keli Sun ,  Xiaoyan Zhong ,  Ettore Mirto ,  Kong Hauw Sarwa Bakti Tan

IPC: G01V3/30 ,  G01V3/34

CPC classification number: G01V3/30 ,  G01V3/34

Abstract: A method for making electromagnetic directional resistivity measurements includes rotating an electromagnetic logging tool in a subterranean wellbore penetrating the formation. The logging tool includes a transmitting antenna and a receiving antenna spaced along a tool body with at least one of the transmitting antenna and the receiving antenna being a tiltted antenna. The electromagnectic logging tool is used to make a plurality of electromagnetic measurements at a corresponding plurality of frequencies while rotating in the wellbore. The plurality of measurements made at the corresponding plurality of frequencies is processed to compute a combined apparent resistivity of the subterranean formation. The processing includes minimizing a difference between a plurality of modeled measurements and the plurality of wellbore measurements in which the modeled measurements are computed using a model assuming a homogenous formation.

公开(公告)号：US10323498B2

公开(公告)日：2019-06-18

申请号：US15026232

申请日：2014-10-01

Applicant: Schlumberger Technology Corporation

Inventor： Keli Sun ,  Koji Ito ,  Christopher E. Morriss ,  Roger Griffiths ,  Steve F. Crary ,  Shahzad A. Asif

IPC: E21B44/00 ,  E21B7/06 ,  E21B47/02 ,  E21B47/12 ,  E21B49/00

Abstract: Methods, computer-readable media, and systems are disclosed for applying 1D processing in a non-1D formation. In some embodiments, a 3D model or curtain section of a subsurface earth formation may be obtained. A processing window within the 3D model or curtain that is suitable for 1D inversion processing is determined, and a local 1D model for the processing window is built. A 1D inversion is performed on the local 1D model, and inverted formation parameters are used to update the 3D model or curtain section.

公开(公告)号：US20160230511A1

公开(公告)日：2016-08-11

申请号：US14975620

申请日：2015-12-18

Applicant: Schlumberger Technology Corporation

Inventor： Gong Li Wang ,  Keli Sun ,  Aria Abubakar ,  Thomas D. Barber

IPC: E21B41/00 ,  E21B49/00 ,  E21B47/12 ,  G06F17/16 ,  E21B49/08 ,  G01V99/00 ,  G01V3/10 ,  E21B43/26 ,  E21B25/00

CPC classification number: G06F17/16 ,  E21B43/26 ,  G01V3/28 ,  G01V3/38 ,  G01V99/005

Abstract: A system and method of performing a fracture operation at a wellsite about a subterranean formation is disclosed. The method involves, obtaining wellsite measurements by placing a downhole tool in a wellbore and using the downhole tool to acquire measurements of the subterranean formation, simulating the obtained wellsite measurements to determine formation parameters comprising conductivity tensors based on a formation model of the measured subterranean formation, validating the formation model by comparing the obtained wellsite measurements with the simulated wellsite measurements, generating fracture parameters and triaxiality indicators based on the validated formation model, and fracturing the subterranean formation based on the generated fracture parameters and triaxiality indicators.

Abstract translation: 公开了一种在围绕地层的井场进行断裂操作的系统和方法。 该方法涉及通过将井下工具放置在井眼中并使用井下工具来获取地下地层的测量值来模拟所获得的井场测量值，以基于所测量的地下地层的地层模型来确定包括导电张量的地层参数 通过将获得的井场测量与模拟井场测量值进行比较，基于验证的地层模型生成断裂参数和三轴度指标，并根据产生的断裂参数和三轴度指标对地下岩层进行压裂，验证地层模型。