Numerical Simulation of Heavy Crude Oil Combustion in Porous Combustion Tube

Reddy, D. Srinivasa; Kumar, G. Suresh

doi:10.1080/00102202.2015.1065822

Cited by 9 publications

(2 citation statements)

References 28 publications

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“…Therefore, the time step size at any time level in the present work is automatically calculated by maintaining the maximum changes in primary dependent variables ζ to be less than defined norm η as given in Equation 17. The choice of norm η and damping factor ω is made on the basis of numerical analysis experiences reported in ISC modelling (Grabowski et al, 1979;Srinivasa and Suresh, 2015). The typical norms of 400 kPa, 40 K and 0.2 respectively for pressure, temperature and saturation are used in the present work.…”

Section: Isc Modelmentioning

confidence: 99%

Comparative Analysis on Impact of Water Saturation on the Performance of in-Situ Combustion

Pavan

Devarapu

Govindarajan

2022

MGPB

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The amount of oil together with the water Originally in Place (OIP), makes up the liquid phase in heavy oil reservoir systems. This amount of liquid present in the pores of the reservoir system is known as liquid saturation, plays a vital role in improving oil recovery through In-Situ Combustion (ISC) process. The oil phase acts as fuel in generating thermal energy required for viscosity reduction and the water phase supports in the formation of an enlarged condensation zone that aids in higher mobility of the low viscous oil. A numerical investigation is carried out to study the role of water saturation on the performance of in-situ combustion in a heavy oil reservoir. A finite-difference based numerical model is developed and validated for water recovery. The model is then used to carry out the impact of liquid saturation on the performance of the ISC, as it plays a vital role in screening criteria for the selection of ISC. The numerical results projected a significant effect on the thermal and production profile during the process. A comparison between the effect of variation in water and oil saturations projected a significant increase in reservoir temperatures with increased water saturation than the oil saturation. The highest reservoir temperatures are observed at the maximum liquid (oil and water together) saturation. Further, the additional water drive provided by increased water saturation is observed to contribute to early production rates.

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Section: Isc Modelmentioning

confidence: 99%

Comparative Analysis on Impact of Water Saturation on the Performance of in-Situ Combustion

Pavan

Devarapu

Govindarajan

2022

MGPB

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“…At present, the experimental methods for calculating the kinetic parameters of crude oil oxidation include thermogravimetric analysis (TGA), derivative thermogravimetry (DTG), differential scanning calorimeter (DSC), accelerated rate calorimetry (ARC), etc. [9,10] Scholars usually use the TGA method to study the oxidation process of heavy oil under atmospheric pressure because of the low content of dissolved gas in heavy oil and the small difference in oil composition between surface condition and formation condition. The TGA method can measure the conversion rate of crude oil in each oxidation stage at different heating rates.…”

Section: Introductionmentioning

confidence: 99%

Oxidation Kinetics Analysis of Crude Oils with Different Viscosities

Luo,

Yu,

Chen

et al. 2023

Processes

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In order to compare the oxidation kinetics parameters of crude oils with different properties in the process of crude oil oxidation, six different crude oil samples were selected to analyze the oxidation characteristics of crude oils with different properties. In order to study the oxidation of crude oil, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) synchronous analyzer were used for crude oil in the oxygen environment between 25 °C and 900 °C at a heating rate of 20 °C/min. The experimental results were based on crude oil oxidation using TGA and DTG experimental data to evaluate the oxidation mechanism of different crude oils, so as to better understand the situation in the oxidation reaction process. At the same time, the oxidation stage of crude oil was divided according to DSC data. Arrhenius method was used to analyze the oxidation kinetic parameters of crude oils with different properties, and the activation energies and pre-exponential factors of different crude oils were calculated. The experimental results show that the oxidation stage of crude oil can be divided into three stages: low-temperature oxidation, fuel deposition, and high-temperature oxidation. The low-temperature oxidation reaction begins at 280 °C, and the high-temperature oxidation reaction occurs at 400 °C. The low-temperature oxidation activation energy of an oil sample is 39.73–77.74 kJ/mol. The activation energy of the high-temperature oxidation is in the range of 106.27–264.47 kJ/mol. The activation energy of crude oil in the low-temperature oxidation stage increases with the increase of crude oil viscosity and decreases with the increase of crude oil viscosity in the high-temperature oxidation stage. Therefore, during the high-temperature oxidation stage, high-viscosity crude oil is more prone to reactions.

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Experimental study on the ignition time of electric heaters with thermal insulation structure

Liu

et al. 2018

Energy

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Numerical Simulation of Heavy Crude Oil Combustion in Porous Combustion Tube

Cited by 9 publications

References 28 publications

Comparative Analysis on Impact of Water Saturation on the Performance of in-Situ Combustion

Comparative Analysis on Impact of Water Saturation on the Performance of in-Situ Combustion

Oxidation Kinetics Analysis of Crude Oils with Different Viscosities

Experimental study on the ignition time of electric heaters with thermal insulation structure

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