Q2. What is the basis for any LCA?
Since fossilfuel use causes the largest anthropogenic material flows and energy is essential inthe production of every product, assessments of energy are the basis for any LCA.
Q3. What is the effect of electrification of the platform?
An electrification of the platform would cause substantial benefits in terms of reducing both greenhouse gas and acidifying emissions.
Q4. What is the life-cycle of the platform?
4. Power supply: Due to the CO2 breakthrough and the increased power requirementof the CO2 injection, the produced gas can no longer be used to supply the power on the platform.
Q5. How many MW of power is modeled?
The power plant and CO2 capture facility: A combined cycle power plant with agross power output of 832 MW is modeled to be running at full load.
Q6. What is the promising environmental benefit of the study?
Khoo et al. (17) concluded that enhanced resource recovery methods, both with potential to sequester CO2, results in significant environmental benefits.
Q7. What are the important uncertainties in this work?
The most important uncertainties in this work are connected to the performance characteristics and impacts associated with the carbon capture plants, the reservoir characteristics which influence the amount of recoverable oil and time at which the CO2 breaks through, and uncertainties about the design and operations of the CO2 injection and re-injection at the platform.
Q8. What is the impact of the CCS system on the environment?
5. Table 4 indicates that, on a life-cycle basis, the CCS reduces greenhouse gas emissions by 80%, but it substantially increases acidification potential due to the NH3 emitted from the capture plant.
Q9. What is the definition of a life cycle assessment?
GeneralDeveloped from a number of roots in chemical engineering and energy analysis, Life-Cycle Assessment (LCA) is a method to account for the environmental impacts associated with a product or service.
Q10. Why do the authors only model global warming and acidification impacts?
The authors only model global warming and acidification impacts, because there is toolittle information available on emissions causing human or ecological toxicity.
Q11. What is the effect of CCS on the environment?
Viebahn et al. (31) showed that CCS technologies emit per kWh more than generally assumed in clean-coal concepts and much more if compared with renewable electricity.
Q12. What is the impact of the enhanced oil recovery on the environment?
More surprisingly, the enhanced oil recovery using CO2 from the power plant would reduce the greenhouse gas emissions per unit of oil produced.
Q13. What is the solution to the financial risk issues of the CCS-EOR system?
Bellona (16) has been proposed a solution for resolving the financial risk issues, proposing government-backed firms that would capture the CO2, transport it to the platform, and sell it to the oil companies.
Q14. What are the requirements for the use of CO2 handling?
The introduction of CO2 handling and its use for enhanced oil recovery require substantial changes to the operations on platform.