Reaching too Far, Delving too Deep: The Well from Hell
BP Knows it will get Worse, much Worse
It is a dangerous game drilling into high pressure oil and gas zones because you risk having a blowout if your mud weight is not heavy enough. If you weight up your mud with barium sulfate to a very high level, you risk BLOWING OUT THE FORMATION.
What does that mean? It means you crack the rock deep underground; as the mudweight is now denser than the rock, it escapes into the rock in the pore spaces and the fractures. The well empties of mud. If you have not hit high pressure oil or gas at this stage, you are lucky.
But if you have, the oil and gas come flying up the well and you have a blowout, because you have no mud in the well to suppress the oil and gas. You shut down the well with the blowout preventer. If you do not have a blowout preventer, you are in trouble as we have all seen and you can only hope that the oil and gas pressure will naturally fall off with time, otherwise you have to try and put a new blowout preventer in place with oil and gas coming out as you work.
Obviously, the oil and gas pressure hasn't fallen off
In fact... it's increased.
The problem is that BP may not only have hit the mother of high-pressure wells, but there is also a vast amount of methane down there that could come exploding out like an underwater volcano.
Link:
http://www.globalresearch.ca/index.php?context=va&aid=19925
No comments:
Post a Comment