Abstract: Embodiments of methods, systems, and computer-readable media for coupling two or more simulators to simulate a coupled multi-physics model of a subsurface formation are provided. A coupling framework loads one or more simulators as shared libraries into a common process and a common memory space with a first simulator to create the coupled multi-physics model of the subsurface formation. During simulation, the coupling framework controls data exchange between the first simulator and the other simulator(s) through the common memory space and controls execution of the first simulator and the other simulator(s) responsive to the common process. In the event of two-way coupling, the coupling framework can receive feedback from the other simulator(s) and alter execution of the first simulator. In the event of grid misalignment, the coupling framework can map data between the first simulator and the other simulator(s) such as in a globally conservative (e.g., mass, energy, etc.) manner.

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.

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.

Abstract: Embodiments of methods, systems, and computer-readable media for coupling two or more simulators to simulate a coupled multi-physics model of a subsurface formation are provided. A coupling framework loads one or more simulators as shared libraries into a common process and a common memory space with a first simulator to create the coupled multi-physics model of the subsurface formation. During simulation, the coupling framework controls data exchange between the first simulator and the other simulator(s) through the common memory space and controls execution of the first simulator and the other simulator(s) responsive to the common process. In the event of two-way coupling, the coupling framework can receive feedback from the other simulator(s) and alter execution of the first simulator. In the event of grid misalignment, the coupling framework can map data between the first simulator and the other simulator(s) such as in a globally conservative (e.g., mass, energy, etc.) manner.

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.

Abstract: A method of performing Field Management is disclosed, a Field Management system including a portable Field Management (FM) framework being initially decoupled from any simulators, one or more adaptors operatively connected to the FM framework, and one or more open interfaces associated, respectively, with the one or more adaptors, the open interfaces each having interface characteristics, the method comprising: modifying one or more of the simulators such that the simulators adhere to the interface characteristics of the open interfaces of the one or more adaptors which are operatively connected to the FM framework; subsequently coupling the one or more modified simulators to the one or more open interfaces of the one or more adaptors of the FM framework in response to the modifying step; and performing the Field Management on the condition that the one or more modified simulators are coupled to the one or more open interfaces of the one or more adaptors of the FM framework.

Abstract: To provide feedback control in a simulation framework, any one of plural output metrics from a simulator of a subterranean structure is selected. A value for the selected output metric is received from the simulator. In response to the received value of the selected output metric and a target value of the selected output metric, at least one setting of the simulator is adjusted by a feedback controller.

Abstract: To provide feedback control in a simulation framework, any one of plural output metrics from a simulator of a subterranean structure is selected. A value for the selected output metric is received from the simulator. In response to the received value of the selected output metric and a target value of the selected output metric, at least one setting of the simulator is adjusted by a feedback controller.

Abstract: To provide feedback control in a simulation framework, any one of plural output metrics from a simulator of a subterranean structure is selected. A value for the selected output metric is received from the simulator. In response to the received value of the selected output metric and a target value of the selected output metric, at least one setting of the simulator is adjusted by a feedback controller.

Abstract: A method for enhancing the allocation of fluid flow rates among a plurality of well bores in fluid communication with at least one subterranean reservoir is disclosed. An objective function and system equations are generated which utilize constraint violation penalties associated with soft constraints. The soft constraints are constraints which may be violated if necessary to arrive at a feasible solution to optimizing the objective function and the system equations. The fluid flow rates are then allocated among the well bores as determined by the optimizing of the objective function and system equations. Fluid flow rates among well bores, particularly those exhibiting similar fluid characteristics, may be related to one another. Initial flow rates of components (oil, gas, and water) and pressures in the well bores may be determined by an initial simulation run.

Abstract: A method of performing Field Management is disclosed, a Field Management system including a portable Field Management (FM) framework being initially decoupled from any simulators, one or more adaptors operatively connected to the FM framework, and one or more open interfaces associated, respectively, with the one or more adaptors, the open interfaces each having interface characteristics, the method comprising: modifying one or more of the simulators such that the simulators adhere to the interface characteristics of the open interfaces of the one or more adaptors which are operatively connected to the FM framework; subsequently coupling the one or more modified simulators to the one or more open interfaces of the one or more adaptors of the FM framework in response to the modifying step; and performing the Field Management on the condition that the one or more modified simulators are coupled to the one or more open interfaces of the one or more adaptors of the FM framework.

Abstract: A method for enhancing the allocation of fluid flow rates among a plurality of well bores in fluid communication with at least one subterranean reservoir is disclosed. An objective function and system equations are generated which utilize constraint violation penalties associated with soft constraints. The soft constraints are constraints which may be violated if necessary to arrive at a feasible solution to optimizing the objective function and the system equations. The fluid flow rates are then allocated among the well bores as determined by the optimizing of the objective function and system equations. Fluid flow rates among well bores, particularly those exhibiting similar fluid characteristics, may be related to one another. Initial flow rates of components (oil, gas, and water) and pressures in the well bores may be determined by an initial simulation run.