Oil prices fell on Monday, extending a slump from Friday that ended weeks of rallying, after President Donald Trump demanded that producer club OPEC raise output to soften the impact of U.S. sanctions against Iran.

Poland, Germany, Ukraine and some other countries suspended imports of Russian oil via the Druzhba pipeline this week due to the contamination. Russia said it plans to restore the pipeline to Europe to stability in two weeks.

China's crude oil imports from Iran, the March volume rose 6.2% from February on a barrels-per-day basis, despite dropping by a quarter from the same month of last year.

"Not extending the oil waivers of some countries is another side of the US measures against Iran. But if Iran's oil is fully sanctioned, oil price will go higher than $100 per barrel,"

“Markets remained volatile with Brent averaging $63/b in the first quarter, down 6% from last year, while natural gas prices were down 11% in Europe and 30% in Asia. Adjusted net income was $2.8 billion this quarter, down 4%, and return on equity held steady at 12% this quarter.

Exxon Mobil Corporation today announced estimated first quarter 2019 earnings of $2.4 billion, or $0.55 per share assuming dilution, compared with $4.7 billion a year earlier.

Oil prices dipped on Friday on expectations that producer club OPEC will soon raise output to make up for a decline in exports from Iran following a hardening of sanctions on Tehran by the United States.

Crude oil prices are expected to average $66 a barrel in 2019 and $65 a barrel in 2020,

In March 2019, Venezuela's crude oil production (excluding condensate) averaged 840,000 barrels per day (b/d), down from 1.1 million b/d in February,

Occidental Petroleum made a new $57 billion offer for Anadarko

Anadarko Petroleum Corporation (NYSE: APC) announced 2019 first‑quarter results, reporting a net loss attributable to common stockholders of $15 million, or $0.03 per share (diluted).

ExxonMobil said that it signed a sales and purchase agreement with Zhejiang Provincial Energy Group for liquefied natural gas (LNG) supply. Under the agreement, Zhejiang Energy is expected to receive 1 million metric tons per annum of LNG over 20 years.

Crude oil prices for spot delivery rose to 2019 highs earlier in the week after the United States said on Monday it would end all exemptions for sanctions against Iran, demanding countries halt oil imports from Tehran from May or face punitive action from Washington.

The International Energy Agency is monitoring developments in global oil markets, and notes that markets are now adequately supplied, and that global spare production capacity remains at comfortable levels.

OPEC is due to meet in June, where the Iran question will no doubt be raised. But oil and gas leaders are taking a cautious approach, with Kuwait's oil minister Khaled Al Fadhel noting that a decision would be taken only after a review of oil prices.