As much as I agree with the implication that O&G companies latch on to every potential carbon sink as a way to greenwash themselves, carbon capture does have merits.

However, the only ones who can currently utilize carbon capture on a significant scale are the ones who produce a lot of carbon to begin with. Technology will have to advance drastically for it to be a carbon sink effective enough to offset emission to the point where emission cuts can be scaled down.

Source: Last year I was involved in surveyon an area that was planned for huge-scale carbon storage after capture.