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1. 发明授权

US11156742B2 Reservoir simulation using an adaptive deflated multiscale solver 有权
公开(公告)号：US11156742B2
公开(公告)日：2021-10-26
申请号：US15762096
申请日：2016-10-06
申请人： Schlumberger Technology Corporation , Chevron U.S.A. Inc. , Total SA
发明人： Kyrre Bratvedt , Alexander Lukyanov , Hadi Hajibeygi , Kees Vuik
IPC分类号： G01V99/00 , G06F30/23 , E21B49/00 , G06F17/18 , G06F111/10
摘要： Systems, computer-readable media, and methods are described for performing a reservoir simulation by obtaining reservoir data, obtaining simulation parameters, determining partial differential equations based on the simulation parameters, and performing a timestep of the reservoir simulation based on the reservoir data and the partial differential equations by removing an effect of long coherent structures with high contrasts, such as fractures, faults, high and low permeability channels, or shale layers, from the partial differential equations to generate adapted partial differential equations, and performing an algebraic multiscale method on the adapted partial differential equations to generate an approximated solution. The approximated solution can be used in a subsequent timestep of the reservoir simulation.

2. 发明申请

US20210110088A1 METHODS AND SYSTEMS FOR RESERVOIR SIMULATION 有权
公开(公告)号：US20210110088A1
公开(公告)日：2021-04-15
申请号：US16948279
申请日：2020-09-11
申请人： Schlumberger Technology Corporation
发明人： Zhuoyi Li , Antonina Kozlova , Shingo Watanabe , Kyrre Bratvedt , Jostein Natvig , Matei Tene
IPC分类号： G06F30/20 , G01V99/00
摘要： Improved reservoir simulation methods and systems are provided that employ a new velocity model in conjunction with a sequential implicit (SI) formulation or Sequential Fully Implicit (SF) formulation for solving the discrete form of the system of nonlinear partial differential equations. In embodiments, the new velocity model employs a fluid transport equation part based on calculation of phase velocity for a number of fluid phases that involves capillary pressure and a modification coefficient. In embodiments, the modification coefficient can be based on a derivative of capillary pressure with respect to saturation. In another aspect, the new velocity model can employ an estimate of the phase velocity of the water phase νw_est that is based on one or more derivatives of capillary pressure of the water phase as a function of water saturation.

3. 发明授权

US10914864B2 Multiscale method for reservoir models 有权
公开(公告)号：US10914864B2
公开(公告)日：2021-02-09
申请号：US14636319
申请日：2015-03-03
申请人： Schlumberger Technology Corporation
发明人： Kyrre Bratvedt , Carlos Boneti , Jostein Natvig , Zhuoyi Li
IPC分类号： G01V99/00 , G06F17/16
摘要： Methods, computing systems, and computer-readable media for multi-scale modeling. The method includes determining a first matrix for a plurality of fine cells of a model based at least in part on a physical property value represented by respective fine cells, identifying one or more overlapped cells of the plurality of fine cells that are part of at least two of the plurality of subdomains, and determining a second matrix. Determining the second matrix includes determining an intermediate product by multiplying the first matrix by a prolongation matrix, which includes predicting a row of zeros in the intermediate product for the plurality of fine cells that are not the one or more overlapped cells and are not part of the at least two of the plurality of subdomains that include the one or more overlapped cells. Determining the second matrix also includes multiplying the intermediate product by a restriction matrix.

4. 发明申请

US20160162612A1 MULTILEVEL MONOTONE CONSTRAINED PRESSURE RESIDUAL MULTISCALE TECHNIQUES 审中-公开
标题翻译：多单元约束压力残差多尺度技术
公开(公告)号：US20160162612A1
公开(公告)日：2016-06-09
申请号：US14751736
申请日：2015-06-26
申请人： Schlumberger Technology Corporation , Chevron Corporation , Total Reserche & Development SAS
发明人： Alexander Lukyanov , Hadi Hajibeygi , Jostein Natvig , Kyrre Bratvedt
IPC分类号： G06F17/50 , G06F17/10
CPC分类号： G06F17/5009 , E21B47/06 , G06F17/10
摘要： Computing systems, methods, and computer-readable media for modeling behavior of at least one fluid in a reservoir are disclosed. More particularly, the techniques provide consistent and robust numerical formulations for solutions to linear system of equations arising from the linearization of coupled nonlinear hyperbolic/parabolic (elliptic) partial differential equations (PDEs) of fluid flow in heterogeneous anisotropic porous media.
摘要翻译：公开了用于建模储层中至少一种流体的行为的计算系统，方法和计算机可读介质。更具体地说，这些技术为非均质各向异性多孔介质中流体流动的耦合非线性双曲线/抛物线（椭圆）偏微分方程（PDE）的线性化产生的线性方程组解决方案提供了一致和鲁棒的数值公式。

5. 发明申请

US20160018562A1 MULTISCALE METHOD FOR RESERVOIR MODELS 审中-公开
标题翻译：储层模型的多尺度方法
公开(公告)号：US20160018562A1
公开(公告)日：2016-01-21
申请号：US14636319
申请日：2015-03-03
申请人： Schlumberger Technology Corporation
发明人： Kyrre Bratvedt , Carlos Boneti , Jostein Natvig , Zhuoyi Li
IPC分类号： G01V99/00 , G06F17/10
CPC分类号： G01V99/005 , G06F17/16
摘要： Methods, computing systems, and computer-readable media for multi-scale modeling. The method includes determining a first matrix for a plurality of fine cells of a model based at least in part on a physical property value represented by respective fine cells, identifying one or more overlapped cells of the plurality of fine cells that are part of at least two of the plurality of subdomains, and determining a second matrix. Determining the second matrix includes determining an intermediate product by multiplying the first matrix by a prolongation matrix, which includes predicting a row of zeros in the intermediate product for the plurality of fine cells that are not the one or more overlapped cells and are not part of the at least two of the plurality of subdomains that include the one or more overlapped cells. Determining the second matrix also includes multiplying the intermediate product by a restriction matrix.
摘要翻译：用于多尺度建模的方法，计算系统和计算机可读介质。该方法包括至少部分地基于由相应的细小区表示的物理属性值来确定模型的多个细小区的第一矩阵，识别作为至少一部分的多个细小区的一个或多个重叠小区多个子域中的两个，并且确定第二矩阵。确定第二矩阵包括通过将第一矩阵乘以延长矩阵来确定中间乘积，其包括预测不是一个或多个重叠小区的多个细小区的中间乘积中的零行，并且不是所述多个子域中的至少两个子域包括所述一个或多个重叠小区。确定第二矩阵还包括将中间乘积乘以限制矩阵。

6. 发明公开

US20230214554A1 METHODS AND SYSTEMS FOR RESERVOIR SIMULATION 审中-公开
公开(公告)号：US20230214554A1
公开(公告)日：2023-07-06
申请号：US18174058
申请日：2023-02-24
申请人： Schlumberger Technology Corporation
发明人： Zhuoyi Li , Antonina Kozlova , Shingo Watanabe , Kyrre Bratvedt , Jostein Natvig , Matei Tene
IPC分类号： E21B49/00 , E21B44/00
CPC分类号： E21B49/008 , E21B44/00 , E21B2200/20 , E21B2200/22
摘要： Improved reservoir simulation methods and systems are provided that employ a new velocity model in conjunction with a sequential implicit (SI) formulation or Sequential Fully Implicit (SF) formulation for solving the discrete form of the system of nonlinear partial differential equations. In embodiments, the new velocity model employs a fluid transport equation part based on calculation of phase velocity for a number of fluid phases that involves capillary pressure and a modification coefficient. In embodiments, the modification coefficient can be based on a derivative of capillary pressure with respect to saturation. In another aspect, the new velocity model can employ an estimate of the phase velocity of the water phase vw_est that is based on one or more derivatives of capillary pressure of the water phase as a function of water saturation.

7. 发明授权

US11474858B2 Parallel multiscale reservoir simulation 有权
公开(公告)号：US11474858B2
公开(公告)日：2022-10-18
申请号：US16306894
申请日：2017-06-22
申请人： Schlumberger Technology Corporation
发明人： Antonina Kozlova , Jostein Natvig , Dominic Walsh , Kyrre Bratvedt , Sindhu Chittireddy , Zhuoyi Li , Shingo Watanabe
IPC分类号： G06F3/00 , G06F9/48 , G06F9/38
摘要： Systems, computer-readable media, and methods for performing a reservoir simulation by obtaining reservoir data; translating the reservoir data into grid properties to create a grid; dividing the grid into domains; generating coarse grids corresponding to each domain; processing the domains, where processing a domain includes: calculating pressure for the domain using a coarse grid corresponding to the domain, calculating flux for the domain using a coarse grid corresponding to the domain, and calculating transport of fluids for the domain using a coarse grid corresponding to the domain; and generating a reservoir simulation corresponding to the grid based on processing each domain. The domains can be processed in parallel on different computer systems, different processors, or different cores.

8. 发明申请

US20200241167A1 Reservoir Simulation Using An Adaptive Deflated Multiscale Solver 审中-公开
公开(公告)号：US20200241167A1
公开(公告)日：2020-07-30
申请号：US15762096
申请日：2016-10-06
申请人： Schlumberger Technology Corporation , Chevron U.S.A. Inc. , Total SA
发明人： Kyrre Bratvedt , Alexander Lukyanov , Hadi Hajibeygi , Kees Vuik
IPC分类号： G01V99/00 , E21B49/00 , G06F17/18 , G06F30/23
摘要： Systems, computer-readable media, and methods are described for performing a reservoir simulation by obtaining reservoir data, obtaining simulation parameters, determining partial differential equations based on the simulation parameters, and performing a timestep of the reservoir simulation based on the reservoir data and the partial differential equations by removing an effect of long coherent structures with high contrasts, such as fractures, faults, high and low permeability channels, or shale layers, from the partial differential equations to generate adapted partial differential equations, and performing an algebraic multiscale method on the adapted partial differential equations to generate an approximated solution. The approximated solution can be used in a subsequent timestep of the reservoir simulation.

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