| 摘要 |
A method for simulating fluid flows in a petroleum reservoir, in which the fluid is split in physical phases comprising a gas phase, an oil phase, a water phase and a microemulsion phase. The fluid comprises water, hydrocarbon, and surfactant components. The method comprises a flash step for calculating compositions via two stages. A first stage comprises a first flash to determine first compositions of the water, oil and gas phases and is performed by omitting the surfactant component in the fluid. A second stage comprises a second flash to determine a microemulsion composition of the microemulsion phase. |
| 主权项 |
1. A method implemented by a computer for simulating fluid flows in a petroleum reservoir,
wherein the method uses a model of said petroleum reservoir in which the fluid can split in a plurality of physical phases, said plurality of physical phases comprising a gas phase, an oil phase, a water phase and a microemulsion phase, each physical phase comprising a plurality of components, the plurality of components comprising at least water, a hydrocarbon, and a surfactant, wherein the method comprises performing a flash step for calculating at least compositions of each physical phase by evaluating a concentration and a quantity of each component in said physical phases, and wherein the flash step comprises:
a first stage comprising at least a first flash to determine compositions of a group of phases, said group of phases being the water phase, the oil phase and the gas phase, and said first flash being performed by omitting the surfactant component in the fluid,a second stage wherein, in case the water phase and the oil phase are simultaneously present in the group of phases determined at the first stage, said second stage comprises at least a second flash to determine a microemulsion composition of the microemulsion phase. |
