Aberdeen South MP Callum McCaig has called on the chancellor to show that all industries have his “full confidence” in this week’s Budget.
The SNP’s energy spokesman also urged Philip Hammond to bring forward measures to safeguard the future of the oil and gas sector.
And he said George Osborne’s decision to axe a £1billion competition for carbon capture and storage development money should be reversed.
Plans to build a ground-breaking plant at Peterhead came to a halt following the 11th-hour news in 2015.
Mr McCaig told the Press and Journal that Mr Hammond must not prioritise some sectors over others or “ferret away” a £27billion pot to deal with “the bombshell of his party’s hard Tory Brexit”.
He added: “Shamefully, the future of Peterhead Power Station has been left hanging in the balance, but the chancellor can and must act now to reverse his predecessor’s decision to scrap the £1billion CCS project.”
He said it was “absolutely appalling” that the UK Government would prioritise some industries over others during Brexit negotiations.
And he stressed his belief that classing the oil and gas sector as “low priority” was an “incredible betrayal”.
Last month, a leaked memo reportedly showed ministers had ranked industries in terms of the level of support they would need during the Brexit process.
Oil, steel and business services were given a low standing, while pharmaceuticals, automotive and textiles were at the upper end of the scale. Fishing was given only a medium priority.
Mr McCaig continued: “Philip Hammond must show his commitment to the oil and gas sector in the north-east and the jobs it supports across Scotland by announcing a full review of tax rates and investment incentives.
“The UK Government, once again, has an opportunity to be truly ambitious and really make a difference to the future of the UK’s energy sector and, on Wednesday, all eyes will be on the chancellor to see that he does not use the Budget as a distraction from the Tory party’s Brexit shambles.”
The UK Government never comments on Budget speculation or demands in advance.
But in an interview with the P&J last week, Theresa May said she wanted to see the oil and gas industry succeed.
The UK Government insists it is fully committed to the sector, pointing to the £2.3billion package of tax measures and £40million for new seismic studies to help uncover more opportunities.