شماره ركورد كنفرانس :
4619
عنوان مقاله :
Simultaneous Modeling of Homogeneous and Heterogeneous Reactions to Estimate Porosity Refinement during Carbonate Acidizing
پديدآورندگان :
Younesian-Farid Hossein hosseinunesian@modares.ac.ir Department of Petroleum Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran , Sadeghnejad Saeid sadeghnejad@modares.ac.ir Department of Petroleum Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran , Faramarzi Nader Department of Petroleum Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
كليدواژه :
Porosity refinement , Mathematical model , Acidizing , Geochemical reaction , Organic acid , Multicomponent flow
عنوان كنفرانس :
دومين كنفرانس بين المللي دو سالانه نفت، گاز و پتروشيمي
چكيده فارسي :
Acidizing is a well-known method to improve the porosity and permeability of porous media. Therefore, having a comprehensive mathematical model in order to prognosticate porosity and permeability changes is of great importance for the success of this method. Most of the modeling approaches of acidizing consider one main acid-rock reaction and ignore the presence of homogeneous reactions in porous media. We develop a precise mathematical model, which is based on a local equilibrium assumption, and considers all homogeneous and heterogeneous reactions in carbonate rocks. This model is applied on several organic acid injections to evaluate their performance on porosity alteration alongside precision in the system. In addition, an alteration of the reactive surface area during the acid injection with different injection rates is investigated. Our simulations indicate that acids with a lower dissociation constant dissociate more gradually and they proceed further into the porous medium
