Numerical Simulation of Asphaltene Precipitation and Deposition during Natural Gas and CO_(2) Injection

作     者：Shasha Feng Yi Liao Weixin Liu Jianwen Dai Mingying Xie Li Li 

作者机构：Nanhai East Petroleum Research InstituteShenzhen Branch of CNOOC Ltd.Shenzhen518000China 

出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)

年 卷 期：2024年第20卷第2期

页      面：275-292页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081702[工学-化学工艺] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0835[工学-软件工程] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：funded by CNOOC Production Research Project(CCL2022SZPS0076) 

主　　题：Reservoir simulation asphaltenes deposition natural gas injection CO_(2)injection 

摘      要：Asphaltene deposition is a significant problem during gas injection processes,as it can block the porous medium,the wellbore,and the involved facilities,significantly impacting reservoir productivity and ultimate oil *** a few studies have investigated the numerical modeling of this potential effect in porous *** study focuses on asphaltene deposition due to natural gas and CO_(2) *** of the effect of gas injection on asphaltene deposition behavior have been made using a 3D numerical simulation *** results indicate that the injection of natural gas exacerbates asphaltene deposition,leading to a significant reduction in permeability near the injection well and throughout the *** reduction in permeability strongly affects the ability of gas toflow through the reservoir,resulting in an improvement of the displacement *** displacement effi-ciency of the injection gas process increases by up to 1.40%when gas is injected at 5500 psi,compared to the scenario where the asphaltene model is not ***_(2) injection leads to a miscible process with crude oil,extracting light and intermediate components,which intensifies asphaltene precipitation and increases the viscosity of the remaining crude oil,ultimately reducing the recovery rate.