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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：US20230069445A1
公开(公告)日：2023-03-02
申请号：US17463260
申请日：2021-08-31
Applicant: Chevron U.S.A. Inc.
Inventor： Sheng Luo , Dengen Zhou , Shihao Wang , Xundan Shi
IPC: E21B49/08 , E21B47/26 , G06F30/28 , G06F30/3308
Abstract: An equation state with a mixing rule that captures a multi-component layering within nanopores may be used to model (1) fluid mixture in the nanopores of the reservoir and (2) movement of fluid between the nanopores and large pores of the reservoir. Such modeling of fluid behavior in large pores and nanopores of the reservoir may enable more accurate simulation of the reservoir (e.g., for hydrocarbon recovery).
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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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