Word is that the proportion of gas to oil is increasing. This is positive, since it means that the localized pressure in the reservoir around the bore is falling below the bubble point. Natural gas is no longer bubbling out of the crude as it rises up the casing, but is instead forming a gas "cap" in the reservoir. If BP and the Gulf environment is lucky, this gas will continue to displace crude in the flow, and at some point we'll see a relatively benign methane leak while the relief well is being drilled.