关键词: 化学驱, 复合驱, 孔隙输运, 机理, 有效性, 持久性, 模型, 模拟

Abstract: Mathematical model of component transport in inter-miscible displacement of chemical flooding is built,in which the physical-chemistry parameters are modeled as chemical concentration dependent functions.Defining the parameter of "effective displacement zone size",the mechanism that many factors such as adsorption,diffusion-dispersion,slug size,displacement velocity influence on component transport processes and results are annualized and analyzed.The validity and durability of chemicals in Daqing ASP combination(Polymer HPAM,surfactant ORS-41,alkaline NaOH) are analyzed for the transport in porous media.The research achievements will not only be a guideline for engineering & technology project design and dynamic monitoring of combination,but also can replace partial flow displacement in laboratory and assisted mechanism investigation.The distinct feature of the developed simulator is the very skillful process of boundary conditions in the calculation of mathematical model in chemical slug projection,the results are more reliable and accurate by using finite differences solution of prediction and correction format.The reliability can be examined by corresponding physical simulation experiments(displacement).

Key words: chemical flooding, combination, transport in porous media, mechanism, validity, durability, model, simulation