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Carbon Dioxide Capture and Storage: Environmental Concerns in Petroleum Exploration and Exploitation

Shadab Raza

The point of "carbon capture and storage" (CCS) is to continue making CO2 gas but capture it, convert it into a liquid by pressurizing it to at least 1500 pounds per square inch, transport it to a suitable location (by pipeline or ship), and then inject it under pressure into the ground, hoping it will stay there forever. The International Energy Agency estimates that, to make a dent in the global warming problem, we will need 6000 CCS projects, each injecting a million tonnes of CO2 a year into the ground, to bury 10 trillion tonnes of CO2 during the next 150 years would require 67,000 projects each injecting into the ground a million tonnes of hazardous CO2 each year.CCS will eliminate incentives for renewable energy. CCS will create a perpetual threat of leakage Ten trillion tons of CO2 represents 10 times as much CO2 as was emitted worldwide during the entire 20th century ocean disposal of CO2 would be a catastrophic error because it would lower the pH of the oceans, severly disrupting the marine food web. CO2 underground may move in ways that are poorly understood Leakage through fractures or faults cannot be sealed off. Coal gasification with carbon capture increases the water requirements of coal plants by 90%. CO2 underground may move in ways that are poorly understood and thus gaps in knowledge needs to be filled up.

Presentation GEO India Expo XXI, Noida, New Delhi, India 2008©AAPG Search and Discovery