Investigating the effects of rock porosity and permeability on the performance of nitrogen injection into a southern Iranian oil reservoirs through neural network

3rd International Conference on Mechanical, Manufacturing and Process Plant Engineering

机械制造;工业技术

Gheshmi, M.S.^1 ; Fatahiyan, S.M.^2 ; Khanesary, N.T.^2 ; Sia, C.W.^1 ; Momeni, M.S.^1

University Technology PETRONAS, Department of Petroleum Engineering, Malaysia^1

Petroleum University Technology of Ahwaz, Department of Gas Engineering, Malaysia^2

关键词: Comprehensive model;    Increase in pressure;    Iranian oil reservoirs;    Nitrogen injection;    Oil-production rates;    Permeability change;    Pressure build up;    Reservoir pressures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/328/1/012021/pdf
DOI  :  10.1088/1757-899X/328/1/012021

学科分类：工业工程学

来源: IOP

【 摘 要 】

In this work, a comprehensive model for Nitrogen injection into an oil reservoir (southern Iranian oil fields) was developed and used to investigate the effects of rock porosity and permeability on the oil production rate and the reservoir pressure decline. The model was simulated and developed by using ECLIPSE300 software, which involved two scenarios as porosity change and permeability changes in the horizontal direction. We found that the maximum pressure loss occurs at a porosity value of 0.07, which later on, goes to pressure buildup due to reservoir saturation with the gas. Also we found that minimum pressure loss is encountered at porosity 0.46. Increases in both pressure and permeability in the horizontal direction result in corresponding increase in the production rate, and the pressure drop speeds up at the beginning of production as it increases. However, afterwards, this pressure drop results in an increase in pressure because of reservoir saturation. Besides, we determined the regression values, R, for the correlation between pressure and total production, as well as for the correlation between permeability and the total production, using neural network discipline.