• 4 minutes Will We Ever See 100$+ OIL?
  • 8 minutes Iran downs US drone. No military response . . Just Destroy their economy. Can Senator Kerry be tried for aiding enemy ?
  • 11 minutes Energy Outlook for Renewables. Pie in the sky or real?
  • 6 mins Shale Oil will it self destruct?
  • 12 hours NYT: Mass Immigration Roundups in U.S. to Start Sunday
  • 7 hours White House insider who predicted Iran False Flag, David Goldberg found dead in his New York apartment
  • 17 mins South Korea imports No Oil From Iran in June - First-Half Imports Fall 37%
  • 24 hours U.S. Administration Moves To End Asylum Protections For Central Americans
  • 23 hours U.S.- Taiwan: China Says Will Freeze Out U.S. Companies That Sell Arms To Taiwan
  • 9 hours Germany exits coal: A model for Asia?
  • 4 hours Carrot And Stick: North Korea Suggests It Might Lift Weapons Test moratorium
  • 4 hours Migration From Eastern Europe Raises German Population To Record High
  • 4 hours Starlink Internet Courtesy of Tesla
  • 5 hours Trump vs. Xi Trade Battle, Running Commentary from Conservative Tree House
  • 2 days Oil Price Could Fall To $30 If Global Deal Not Extended
  • 2 days Rising air pollution and green house effect
Alt Text

Coal’s Long Goodbye

U.S. coal producers continue to…

Alt Text

Is This The Next Coal Megaproject?

A new Russo-Chinese megaproject could…

Alt Text

India’s Coal Reliance Deepens

Despite significant efforts to boost…

Darrell Delamaide

Darrell Delamaide

Darrell Delamaide is a writer, editor and journalist with more than 30 years' experience. He is the author of three books and has written for…

More Info

Premium Content

Flaw in CCS Theory May Puncture Clean Coal Dream, Study Says

Clean coal is likely to remain a chimera rather than a real solution to carbon emissions, a new study suggests, because the much-touted process of carbon capture and sequestration simply won’t prove to be feasible.

Proponents of coal have held out CCS as the key to a future use of coal in keeping with efforts to combat global warming, but the technology remains unproven and has long faced skepticism.

In theory, carbon dioxide given off during combustion would be captured and injected in either liquid or “supercritical” state into an underground rock formation so that it would not disperse into the atmosphere.

The new study on CCS by Michael Economides of the University of Houston and Christine Ehlig-Economides of Texas A&M University says that proponents of CCS have underestimated the amount of reservoir space that will be required because the volume of carbon dioxide to be stored cannot exceed more than 1% of pore space, and perhaps much less, rather than the 1-4% in most calculations.

“This will require from 5 to 20 times more underground reservoir volume than has been envisioned by many,” the authors write, “and it renders geologic sequestration of CO2 a profoundly non-feasible option for the management of CO2 emissions.”

Michael Economides himself is a self-declared skeptic of global warming and long has argued that traditional fossil fuels must continue to provide the bulk of our energy needs.

The mistaken calculations are due to the assumption that the CO2 can be injected into a reservoir formation at a constant pressure, the authors say. But in fact, pressure will vary, affecting the rate of injection. Excessive pressure could fracture the formation, says the study, published in the Journal of Petroleum Science and Engineering.

“In applying this to a commercial power plant, the findings suggest that for a small number of wells the areal extent of the reservoir would be enormous, the size of a small U.S. state,” the authors say.

Several government-sponsored experiments in CCS are under way in various countries, including the U.S.  The New York Times reported last week on a project in Germany that has been injecting carbon into a sandstone reservoir for the past 22 months and is attempting to monitor any leakage.

By. Darrell Delamaide




Download The Free Oilprice App Today

Back to homepage


Leave a comment

Leave a comment




Oilprice - The No. 1 Source for Oil & Energy News
Download on the App Store Get it on Google Play