Much of the increase comes from the introduction of the Thunder Horse field in the Gulf of Mexico in 2009, which is now pumping around 300,000 barrels of oil equivalent a day.

The number was slightly ahead of Goldman Sach’s estimate of BP’s first quarter production of 3.95 million boe per day, but the investment bank still said the company is its least preferred of the European oil firms.

BP Chief Executive, Tony Hayward confirmed the company’s goal of rising production by 1-2% a year between now and 2013. Based on existing projects and have the potential to continue the growth out to 2020.