Storing the Carbon in Fossil Fuels Where It Came from: Deep Underground: Scientific American

For more than a decade, Norwegian oil company Statoil Hydro has been stripping climate change–causing carbon dioxide (CO2) from natural gas in its Sleipner West field and burying it beneath the seabed rather than venting it into the atmosphere.

The company estimates that since 1996 it has stored more than 10 million-plus metric tons of CO2 some 3,300 feet (1,000 meters) down in the sandstone formation from which it came—and all of it has stayed put, which means storage may be the simplest part of the carbon capture and storage (CCS) challenge.
Storing the Carbon in Fossil Fuels Where It Came from: Deep Underground: Scientific American