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1.发明申请公开(公告)号：US20190094199A1
公开(公告)日：2019-03-28
申请号：US16138625
申请日：2018-09-21
Applicant: Chevron U.S.A. Inc.
Inventor： Xundan Shi , Choongyong Han , Yih-Bor Chang , Christian Wolfsteiner , Baris Guyaguler
Abstract: A method for simulating a microemulsion system in a chemical enhanced oil recovery process is disclosed. The method includes receiving a geological model of a subsurface reservoir that defines a grid having a plurality of cells, determining a surfactant concentration for each cell based on a volume of surfactant and a volume of water within the cell and independently from a volume of oil in the cell, and simulating fluids flowing in the subsurface reservoir. Results from simulation can be used to optimize a chemical enhanced oil recovery process in a subsurface reservoir.
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公开(公告)号：US20240428899A1
公开(公告)日：2024-12-26
申请号：US18340492
申请日：2023-06-23
Inventor： Xundan Shi , Yih-Bor Chang , Christian Wolfsteiner , Choongyong Han , Baris Guyaguler
Abstract: Asphaltene simulation is performed by modeling asphaltene using physical changes. A pseudo-component framework is used to simulate asphaltene precipitation, asphaltene flocculation, and asphaltene deposition in a subsurface region. The pseudo-component framework for asphaltene simulation treats asphaltene precipitation, asphaltene flocculation, and asphaltene deposition as physical changes of a single component, rather than as chemical changes. Use of the pseudo-component framework for asphaltene simulation reduces complexity of asphaltene simulation. For example, use of the pseudo-component framework for asphaltene simulation enables tracking of asphaltene as it is found in different states (precipitated, flocculated, deposited). Use of the pseudo-component framework for asphaltene simulation enables chemical reactions to be replaced by a flash and adsorption framework. Asphaltene simulation using the pseudo-component framework exhibits stable and fast convergence.
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公开(公告)号：US11567058B2
公开(公告)日：2023-01-31
申请号：US16138625
申请日：2018-09-21
Applicant: Chevron U.S.A. Inc.
Inventor： Xundan Shi , Choongyong Han , Yih-Bor Chang , Christian Wolfsteiner , Baris Guyaguler
Abstract: A method for simulating a microemulsion system in a chemical enhanced oil recovery process is disclosed. The method includes receiving a geological model of a subsurface reservoir that defines a grid having a plurality of cells, determining a surfactant concentration for each cell based on a volume of surfactant and a volume of water within the cell and independently from a volume of oil in the cell, and simulating fluids flowing in the subsurface reservoir. Results from simulation can be used to optimize a chemical enhanced oil recovery process in a subsurface reservoir.
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