Promising only in the sense that they are able to attract funding from
suckers who will inevitably lose their shirts on such investments.
It can be done but at such a high cost that it wasn't even economic when
crude was >$120/barrel. The spot price today is nearer $30.
Even taking CO2 from the relatively high concentration in power station
flue gases is proving uneconomic and everything has been put on hold now
since the oil price fell by a factor of nearly 4. Even fracking and the
remaining North Sea oil has become uneconomic in this environment.
Watch them all go bust as the Saudis keep on pumping...
(Iran coming onstream again makes things even worse)
--
Regards,
Martin Brown