Sunil Kokal

Principal Professional Saudi Aramco
  • Our industry has been the custodian of subterranean reservoirs. We are the experts in managing and developing them. Why not use that expertise to find solutions for climate change by capturing and removing carbon and being part of the solution?
  • What the industry needs at this stage is a willingness to work together, share best practices, conduct innovative research, and focus on disruptive technologies that lower cost of capture and make our operations more sustainable.
  • In recent years, some effort has been made to use EOR techniques, particularly CO2 injection, to extract additional oil and gas from unconventional resources. This has the potential to change the dynamics (again) of oil production from these tight and difficult reservoirs.
  • In my previous features, I discussed the challenges facing carbon dioxide (CO2), both technical and economic. By far the biggest use of CO2 is in enhanced oil recovery (EOR). In this feature, the focus is on overcoming the biggest challenges facing CO2 EOR—gravity override and mobility.
  • Global emissions of CO2 resulting from the use of fossil fuels amount to approximately 35 billion tons/yr. How much of this can we capture? How much can we store or sequester? And, perhaps the most important question: How much will it cost and who will pay?
  • There remain a number of challenges with CO2 EOR. These include gravity override, poor sweep efficiency, and economic factors.