Shell warned the market on Monday that it would book up to $4.5 billion more in post-tax charges in the fourth quarter, which would take the supermajor’s combined write-downs to over $22 billion in the year in which Big Oil significantly cut the value of their oil and gas assets. Shell expects post-tax charges of between $3.5 billion and $4.5 billion in relation to impairments, asset restructuring, and onerous contracts in the fourth quarter, the company said in its Q4 2020 update note today. The charges will include partial impairment of the Appomattox asset in the U.S. Gulf of Mexico due to subsurface updates, charges in the oil products division, including such related to the announced transformation of the refinery portfolio, as well as charges from onerous contracts in the Integrated Gas division. Earlier this year, Shell warned it could take as much as a $22-billion post-tax impairment charge […]