Six weeks after oil began gushing into the Gulf of Mexico, BP engineers are still trying to come up with a way to stop the flow.

Their so-called "top-kill: method failed over the weekend, now crews are gearing up for another procedure.

The oil spill could get worse before it gets better.

BP's latest fix involves cutting a broken pipe and attaching a containment dome over the ruptured well. but the procedure could increase the oil flow

temporarily.

"Our experts are telling us it may be as much as 20 percent more oil," said Carol Browner, Assistant to the President for Energy and Climate Change.

The operation began Saturday and is expected to take four to seven days to complete but Gulf Coast residents are tired of waiting.

In New Orleans Sunday, hundreds protested against BP. Demonstrators including the owner of a seafood business called on the company and the government to

do more to save the Gulf Coast from the worst oil spill in US history.

"They did this to me. I didn't do it to myself and I hold Obama responsible for not making BP stand up and look at the people in the face and fix it," said Seafood Inc. Owner Dean Blanchard.

Officials from the Obama administration will head back to the gulf coast this week to survey the damage. The white house is also tripling clean up resources

in areas affected by the spill.

BP admitted Sunday the battle against the gushing well could last until at least August -- when crews are set to complete a relief well.

"There's no doubt that the ultimate solution is the relief well," said BP CEO Tony Hayward.

"We cannot afford to have something go wrong with the relief well. We know that this catastrophe has come to and end," said Sen. Edward Markey.

But even when B-P caps the leak the clean up will have only just begun.