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Politics : President Barack Obama -- Ignore unavailable to you. Want to Upgrade?

To: tejek who wrote (77853)	6/8/2010 10:57:38 PM
From: Wharf Rat	Read Replies (2) \| Respond to of 149317

Oil is oil. Found this, on mud and ocean water...not quite the quote I was looking for, but enuf to get the idea... Thus it’s safe to assume the company man was satisfied with the pressure test on the cement. If not then displacing the [drilling mud in the] riser would be equivalent to playing Russian roulette. The cement testing is often more a matter of experience than black and white numbers. But playing against such experience is the time (i.e. money) factor. With operations running at $35,000 per hour there is always stress to move along quickly. As mentioned yesterday you want to displace the drilling mud from the casing before the well is temporarily abandoned. If you don’t then re-entering the well later could be difficult and time consuming…that money issue again. Before moving off the well head it is required to set addition[al] plugs/cement in the shallow section of the casing as one more safe guard. Had the mud not been displaced first it would have been trapped below the top plug. Removing hydrostatic head away by displacing the casing mud would be a safe procedure only if you were confident in the cement and down hole plugs holding. It appears, for the moment, this calculation was wrong. - ROCKMAN