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Originally posted by seataka
Do you recall what we learned about the drilling mud? when it is heavy enough a column of it of sufficient length will stop the flow as it becomes hydrostatically balanced?
The same rule will apply to the well hole with or without a structurally sound pipe in it.. when the density of the column of stuff coming up exceeds the pressures down below it will end.
Today's loss of a line that has been collecting millions of gallons of leaking oil in the Gulf of Mexico hints at the shape of gusher glitches to come. This time, the line and a containment cap were taken off the wellhead because of a pressure hiccup, reportedly due to an accident involving a remotely operated vehicle.
Hours after the cap was detached, the BP oil company began the process of putting it back over the leak. But BP might well have to repeat the exercise as hurricane season continues.
For more than two weeks, the containment cap has served as the most successful collection point for the oil that has been leaking from BP's broken well since April 20's fatal oil-rig explosion and sinking. The cap system has saved more than 200,000 barrels (8.4 million gallons) of oil so far, at a rate of up to 16,000 barrels (672,000 gallons) a day. Another 10,000 barrels (420,000 gallons) are being captured and burned off every day by a different collection system hooked up to the well's broken blowout preventer.
The source of the problem
So when the cap containment system had to be detached today, that made quite a dent in the oil-sucking operation. Coast Guard Adm. Thad Allen, the point man for the federal oil-spill response, explained during today's news briefing that the cap was removed after workers "noticed there was some kind of a gas rising through the vent that carries the warm water down that prohibits hydrates from forming." Hydrate crystals, which form from water and methane at a certain pressure and temperature, are what foiled the very first efforts to contain the oil flow - so BP wanted to make sure that didn't happen again.
Allen said the glitch was apparently caused by "a remotely operated vehicle that ... bumped into one of those vents that allows the excess oil to come out." When the vent was closed, the pressure built up, causing gas to go the wrong way. As of this afternoon, BP double-checked the system to make sure it was safe to reattach the cap and return to capturing oil.
Was this a remotely operated screw-up? Actually, the way Allen looks at it, this sort of thing is to be expected as the operation proceeds. He pointed out that there's been only one other ROV misstep, made during the early stages of the response to the gulf disaster. "I think the fact that we've had two bumps that have had some kind of a consequence associated with them in the 60-plus days [of the] response is a pretty good record. It's never going to be risk-free out there, and we need to watch it very closely," he told journalists.
Originally posted by seataka
Do you recall what we learned about the drilling mud? when it is heavy enough a column of it of sufficient length will stop the flow as it becomes hydrostatically balanced?
The same rule will apply to the well hole with or without a structurally sound pipe in it.. when the density of the column of stuff coming up exceeds the pressures down below it will end.
Something is happening down there - and it's happening FAST