Oil companies Total and Eni have both blamed profit falls on the conflict in Libya disrupting their production in the north African country.
France's Total saw its net profit decline 12% to 2.73bn euros ($3.89bn; £2.4bn) in the three months to 30 June.
Also affected by maintenance work reducing output at its oil rigs in the North Sea, this compares with a profit of 3.1bn euros a year earlier.
France's Total saw its net profit decline 12% to 2.73bn euros ($3.89bn; £2.4bn) in the three months to 30 June.
Also affected by maintenance work reducing output at its oil rigs in the North Sea, this compares with a profit of 3.1bn euros a year earlier.