See the article we are talking about here. First you spend energy to bring up carbon. Then you spend more energy to get it back down again. The math does not check out. Not bringing up the carbon in the first place would have been far more beneficial for atmospheric CO2 levels.
Worse, they plan to do more of the oil-digging: https://www.reuters.com/article/us-norway-oil-environment-id... (this is dated Dec 2020)
"Norway wants to lead on climate change. But first it must face its legacy of oil and gas." -- "An expert explains Norway’s climate change paradox." -- https://www.vox.com/22227063/norway-oil-gas-climate-change