Abstract
With the development of numerical reservoir simulation technology, numerical simulation has been widely applied to studies on the mechanics of all chemical flooding and injection approaches. In this study, a mathematical model for three-dimensional two-phase sixcomponent deep profile control with weak gel is established based on the mechanics of deep profile control with weak gel. The established model takes diffusion, crosslinking reaction, adsorption, degradation and other physical or chemical phenomena into consideration. A numerical simulation software for deep profile control with gel was created with FOR99 programming language. Using this software, we performed optimization on the slug combination and slug size for the intra-flooding deep profile control with gel in ASP flooding for Xingbei development zone of Daqing oil field. The analysis on the mechanics of deep profile control with gel demonstrated that the addition of the profile control system could strengthen the profile adjustment effect. After the crosslinking system is injected into oil layer, less displacing fluid could enter the high-permeability layers, stimulating more displacing fluid to enter moderate or low-permeability layers, thereby the oil displacement effect is improved.
Published Version
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