[BITList] dnv farce

[COLIN TAYLOR]

hugh

I worked with dnv many times; they will do tests, audits, statistical analysis, computer modelling and analysis ,etc – as well as the more mundane hands-on survey work.
a leading posibility in the cause of the bop failing to stem the flow was the 2 drill pipes in the bop. dnv does not mention this!
dave harvey knows about drilling, drill pipes, bops, etc – I know next to nothing about it. 
be that as it may, I have not heard of bent/buckled drill pipes that after being bent straighten themselves out ‘naturally’. Mr. Thompson, of dnv said the pipe was found straight when the BOP was lifted to the surface in September because it was elastic and returned to its natural position some time after the event.     dave harvey may care to comment on this
unfortunately the enquiry proceedings are not being televised this time round.

colin

ps   - why the small ‘n’?

From: HUGH 
Sent: Tuesday, April 05, 2011 3:26 AM
To: BitList 
Subject: Re: [BITList] dnv farce

Colin,

Det norske Veritas (small "n") are the Norwegian equivalent of Lloyds, they are not some firm who do tests.  I can't judge anything from such a mishmash of evidence about pipes that are/are not bent.  Theoretically, if I applied static pressure to a straight pipe it would tend to stay straight, and if I applied similar to a bent pipe, the opposite.  In practice, however, much would depend on the end conditions - how it's secured to other things and what happens to these other things.  We read nothing about anything other than this mysterious pipe.

Hugh.


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