Let us not forget that oil is traditionally paid for in US$. The value of the US$ is now less than it was. You don't expect the oil companies to receive less because the $ is worth less do you? Naturally they increase the price of oil so that their spending power remains the same.
Well Im sure they wont just sit there with dumb loos on their faces like they did when the congress asked them how they felt know that Americans cant feed their families yet they made 32 billion in profits in the first 3 months of this year.