"The economic impact of the COVID-19 pandemic coupled with pre-existing supply and demand factors have resulted in an exceptionally challenged commodity environment," BP said, having reported profit after tax of $2.9 billion in the first-quarter of 2019. BP said it planned to reduce cash costs by $2.5 billion by the end of 2021 relative to 2019.
"Some of these cost savings may have associated restructuring charges," the company added.
Looney later told the Financial Times that "there will be job cuts globally towards the end of this year".
It expects also to produce less oil in the second quarter, with companies unable to store the excess crude.
BP's first-quarter output dropped 2.8 percent to 3.7 million barrels per day.
BP's share price rallied 1.2 percent to 317.7 pence in midday deals on the rising London stock market.
BP on Tuesday added that its underlying replacement cost profit - a widely-watched measure stripping out exceptional items and changes in the value of oil inventories - stood at $800 million in the first quarter, compared with $2.4 billion for the same period a year earlier. "The result reflected lower prices, demand destruction in the downstream particularly in March, a lower estimated result from (Russian partner) Rosneft and a lower contribution from oil trading."
BP on Monday said that crashing oil prices had prompted it to tweak the terms of a gigantic deal to sell off its Alaska operations.
Hilcorp Alaska in August agreed to purchase the assets, including operations in the mammoth Prudhoe Bay oilfield, for $5.6 billion in a move that sees BP exit the US state after a 60-year presence.
The overall price tag remains the same but the structuring and phasing of payments has been modified. The first quarter meanwhile saw the departure of long-time chief executive Bob Dudley, with the American leaving after a decade at the helm.