Woodside Energy Group Ltd (NYSE:WDS) shares are trading lower after disclosing an impairment charge related to assets acquired under the 2021 transaction with BHP Group Ltd (NYSE:BHP). In particular, the company expects to recognize non-cash post-tax asset impairments of about $1.500 billion in 2023, which includes around $1.200 billion ($1.400 billion pre-tax) related to the Shenzi asset. The charges are mainly related to goodwill and a portion of the purchase price assigned to Shenzi after completing the merger with BHP Petroleum. Woodside Energy also sees a non-cash post-tax impairment of a…