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BS&W calculation

BS&W calculation

BS&W calculation

(OP)
Hi all,

am developing a fairly complicated well clean up model and am trying to figure out how long it will take for the BS&W at topsides to be acceptable.

Now no one I have spoken to has been able to give me a direct answer of exactly how BS&W is calculated ... they generally say "Oh we take a sample, chuck it in a machine and it tells us" ... that doesnt really help me.

How is the BS&W calculared. Is it simple a volume ratio i.e. vol of Sediment and water vs. vol of HC fluids? or what?

Cheers

Read the Eng-Tips Site Policies at FAQ731-376: Eng-Tips.com Forum Policies  
 

RE: BS&W calculation

I think there is an Esso patented method out there somewhere which might give an explanation (this is for flowing crude and uses density measurements).

This is a link to a dictionary that desctibes what it is and how it is measured:
http://books.google.co.uk/books?id=E49NJEssz3kC&pg=PA34&lpg=PA34&dq=Base+sediment+and+water+crude+oil&source=web&ots=PXx-112r7a&sig=_npM3f7QfY9tqLWh1EOLgdP2uSA&hl=en&sa=X&oi=book_result&resnum=1&;ct=result
But I'm not sure how that may help.
 

JMW
www.ViscoAnalyser.com
 

RE: BS&W calculation

(OP)
Thank you JMW! I think that first link has answered my question ...

"It is measured by volume on a centrifuged sample of the oil ..."

Therefore I guess that a BS&W of 5% in a 100ml sample would indicate that there is 5ml of water and sand and 95ml of hydrocarbon ...

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RE: BS&W calculation

We do that on a daily basis, about 100 times a day. All we use is a sample spinner/centrifuge. Yes, it is a simple volume ratio. In our case the concerns are the thickness of the interphase emulsion between the oil and water (receipts) and the straight BS&W for pipelining the oil (product)

<<A good friend will bail you out of jail, but a true friend
will be sitting beside you saying " Damn that was fun!" - Unknown>>

RE: BS&W calculation

We sample on the 'waste' received (straight off the truck) and samples off the shipping tank prior to pipelining it.

<<A good friend will bail you out of jail, but a true friend
will be sitting beside you saying " Damn that was fun!" - Unknown>>

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