Numerical modelling of forward in-situ combustion process in heavy oil reservoirs

Kumar, G. Suresh; Reddy, D. Srinivasa

doi:10.1504/ijogct.2017.10006351

Cited by 3 publications

(1 citation statement)

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“…Thermal methods use a heat source to increase the reservoir temperature and, as a result, oil viscosity decreases, thereby enhancing the heavy oil production uses [3]. Steam flood-ing and In-Situ Combustion (ISC) [4,5] are the widely used methods under this category.…”

Section: Introductionmentioning

confidence: 99%

Effects of Nanoparticles in Polymer-Based Enhanced Oil Recovery Technique

Dora¹,

Kumar²,

Chaudhary³

et al. 2022

J. Nano- Electron. Phys.

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Polymer-based chemical enhanced oil recovery methods, while overcoming the disadvantages of conventional waterflooding such as viscous fingering, have performance issues in saline and high temperature conditions that can be addressed through the application of nanotechnology. In the present work, a nanofluid prepared from copper oxide (PHPA) is explored in order to improve the oil recovery efficiency. The prepared nanofluid is analyzed for its rheological performance at various additive concentrations, salinities and for temperatures ranging from 25 to 100 C. The analysis predicts the nanofluid to exhibit a significant improvement in its rheological properties with resistance to saline and temperature conditions.

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Section: Introductionmentioning

confidence: 99%

Effects of Nanoparticles in Polymer-Based Enhanced Oil Recovery Technique

Dora¹,

Kumar²,

Chaudhary³

et al. 2022

J. Nano- Electron. Phys.

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Compositional numerical analysis of multiphase flow of crude oil in porous media under non-isothermal conditions

Devarapu

Dora²,

Kudapa

et al. 2023

International Journal of Chemical Reactor Engineering

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The present work details the development of a compositional model to replicate the heavy hydrocarbon flow in porous reservoir systems under non-isothermal conditions. The mathematical model considers mass and energy conservation equations describing the reactive of natural variables distributed in a multiphase hydrocarbon system. Such natural variable based compositional models better suit fully implicit numerical schemes with inexpensive Jacobian matrix computations. Further, the model accommodates a switch of primary variables for the disappearance and reappearance of a phase. The resulting nonlinear conservation equations are numerically discretized using a block-centered finite-difference scheme and solved with a quasi-Newton based implicit iterative solver. The present model is validated with the thermal profiles presented in the literature for the multiphase flow during the combustion of heavy crude oil in petroleum reservoir system with performance coefficient (R 2), mean absolute error (MBE), and maximum absolute percentage error (MAPE) of about 0.954, 0.37, and 0.01 respectively. The developed compositional model projected 26 and 72 % of light and heavy oil recoveries respectively in about 160 days with a maximum or peak temperature of about 798 K. Further, the thermal and production profiles projected by the sensitivity analysis on various operating parameters are presented. It is noteworthy that the present works aid in providing an economical numerical based tool in evaluating the flow and transport during underground or in-situ combustion process for efficient energy exploration.

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Numerical investigations on sc-CO₂ gas sequestration in layered heterogeneous deep saline aquifers

Venkata

Devarapu

Kudapa

et al. 2023

International Journal of Chemical Reactor Engineering

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Carbon capture and storage (CCS) technology is regarded as the feasible solution to mitigate CO2 emissions from the burning of fossil fuels in large-scale industries to meet energy demand. The storage of CCS requires the injection of CO2 gas captured from bulk sources into geological formations. Deep saline aquifers are the largest identified storage potential formations for injecting high volumes of gas. The safe storage of CO2 gas requires a better understanding of the gas migration and pore pressure buildup in the aquifer. In the present work, a numerical has been developed to study the various factors impacting the CO2 gas migration in the formation of both homogeneous and multi-layered deep saline aquifers. The numerical model has been history matched with an analytical solution and the plume thickness data reported by Nordbotten, J. M., M. A. Celia, and S. Bachu. (2005). “Injection and Storage of CO2 in Deep Saline Aquifers: Analytical Solution for CO2 Plume Evolution during Injection.” Transport in Porous Media 58 (3): 339–60. The saturation distribution and pressure buildup in the aquifer are different for each case. The relative permeability of gas increases in the homogeneous case. The drainage efficiency increases along with injection time in any formation. However, the drainage process is less in layered formation compared with homogeneous formation. The parameterized storage efficiency factor (Ɛ) is calculated to understand the storage capacity of the aquifer along the lateral direction near to injection well. The formations having low permeability in the top and below layers of the aquifer, the storage efficiency factor is high indicating more amount of gas is stored.

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Numerical modelling of forward in-situ combustion process in heavy oil reservoirs

Cited by 3 publications

References 0 publications

Effects of Nanoparticles in Polymer-Based Enhanced Oil Recovery Technique

Effects of Nanoparticles in Polymer-Based Enhanced Oil Recovery Technique

Compositional numerical analysis of multiphase flow of crude oil in porous media under non-isothermal conditions

Numerical investigations on sc-CO₂ gas sequestration in layered heterogeneous deep saline aquifers

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Numerical modelling of forward in-situ combustion process in heavy oil reservoirs

Cited by 3 publications

References 0 publications

Effects of Nanoparticles in Polymer-Based Enhanced Oil Recovery Technique

Effects of Nanoparticles in Polymer-Based Enhanced Oil Recovery Technique

Compositional numerical analysis of multiphase flow of crude oil in porous media under non-isothermal conditions

Numerical investigations on sc-CO2 gas sequestration in layered heterogeneous deep saline aquifers

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Numerical investigations on sc-CO₂ gas sequestration in layered heterogeneous deep saline aquifers