首页|Acid-rock reaction kinetics in a two-scale model based on reaction order correction

Acid-rock reaction kinetics in a two-scale model based on reaction order correction

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The reaction order plays a crucial role in evaluating the response rate of acid-rock.However,the con-ventional two-scale model typically assumes that the reaction order is constant as one,which can lead to significant deviations from reality.To address this issue,this study proposes a novel multi-order dynamic model for acid-rock reaction by combining rotating disk experimental data with theoretical derivation.Through numerical simulations,this model allows for the investigation of the impact of acidification conditions on different orders of reaction,thereby providing valuable insights for on-site construction.The analysis reveals that higher response orders require higher optimal acid liquid flow rates,and lower optimal H+diffusion coefficients,and demonstrate no significant correlation with acid concentration.Consequently,it is recommended to increase the displacement and use high-viscosity acid for reservoirs with high calcite content,while reducing the displacement and using low-viscosity acid for reservoirs with high dolomite content.

Reaction orderTwo-scale modelWormhole propagationCarbonate rocksNumerical simulation

Xue-Song Li、Ning Qi、Ze-Hui Zhang、Lian Liu、Xia-Qing Li、Xu-Hang Su

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School of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China

School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,266580,Shandong,China

Key Lab of Unconventional Oil & Gas Development,Ministry of Education,China University of Petroleum(East China),Qingdao,266580,Shandong,China

SINOPEC Northwest Oilfield Branch Company,Urumqi,830011,Xinjiang,China

Petroleum Engineering Technology Research Institute,SINOPEC Shengli Oilfield Company,Dongying 257000,Shandong,China

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National Natural Science Foundation of ChinaNational Key Technologies Research and Development Program of China during the 13th Five-Year Plan Period

Project 51874336Project 2017ZX005030005

2024

10.1016/j.petsci.2023.11.023

石油科学(英文版)
中国石油大学（北京）

石油科学(英文版)

EI
影响因子：0.88
ISSN：1672-5107
年,卷(期)：2024.21(3)