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Speaker at Oil and Gas Conferences - Vishal Dhar
Vishal Dhar
Indian Institute of Technology Guwahati , India
Title : A compositional model for CO2 foam-based enhanced oil recovery for Northeast Indian oil fields

Abstract:

Carbon dioxide (CO2) flooding is one of the proven Enhanced Oil Recovery (EOR) techniques used to keep up with the ever-growing global energy demand with the added benefit of CO2 storage in depleted oil reservoirs. But gravity override and viscous fingering decrease the potential of gas flooding for improving hydrocarbon production. However, foam flooding on the other hand results in better mobility control, enhanced sweep, and greatly improved oil recovery in comparison to sole-gas flooding. Surface-active agents such as surfactants are often used for foam generation and CO2 bubbles stabilization. CO2-based foams have inherent properties of smaller bubble size, larger expansion area, and better fluidity.

The objective of this study is to evaluate the application of CO2 foam injection as an enhanced oil recovery technique in sandstone reservoir of Northeast India and exploring possible improvements of oil production. For this purpose, a foam-based CO2 injection model is generated using the CMG software. A generic reservoir model was build based on the reservoir and crude oil properties of Northeast Indian oil fields. Compositional reservoir simulation studies were performed to investigate the effect of uncertain reservoir parameters, flood design variables, and economic factors. The effectiveness of the process was evaluated through a sensitivity analysis, and by observing its effect on oil recovery factor and ultimate oil recovery.

By integrating experimental data with reservoir simulation, the study demonstrates a detail analysis of CO2-foam EOR techniques, highlighting its advantages and limitations. Overall, this research provides valuable insights into the applicability and effectiveness of CO2-foam based EOR in mature oilfields of Northeast India, contributing to the optimization of hydrocarbon recovery strategies in the region while addressing environmental concerns through CO2 sequestration.

Audience Take Away Notes:

  • The study focuses on the utilization of carbon dioxide for Enhanced Oil Recovery as a method to combat climate change.
  • The study will enable the audience to understand the effects of reservoir and fluid properties on the implementation of CO2 EOR.
  • Through this study an idea of how reservoir simulator (CMG) works is provided.

Biography:

Mr. Vishal Dhar has completed his graduation in Petroleum Engineering from Dibrugarh University, Dibrugarh, India and his master's in Petroleum Engineering and Geo-engineering from Rajiv Gandhi Institute of Petroleum Technology, Rae Bareli, India. He is currently working as a Research Scholar at the Department of Chemical Engineering at the Indian Institute of Technology, Guwahati, India under the supervision of Prof. Pankaj Tiwari and Prof. Subrata Majumder. He was awarded the prestigious Prime Minister Research Fellowship in 2022. His PhD research is particularly focused on the utilization of CO2 for Enhanced Oil Recovery in Northeast Indian Oilfields.

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