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New leak volume report

Posted on 5/13/10 at 6:03 pm
Posted by BatonRougeRugby
Baton Rouge
Member since Jun 2009
169 posts
Posted on 5/13/10 at 6:03 pm
NPR just reported that the estimate amount of oil leaking is not the originally thought 5,000 barrels per day...instead they think it is 10x that much - 50,000 barrels per day.

Looking for link on website...
Posted by MC123
Baton Rouge
Member since Sep 2005
2029 posts
Posted on 5/13/10 at 6:05 pm to
I have been wondering how they measure one liquid under 5,000 feet of another liquid?
Posted by MoreOrLes
Member since Nov 2008
19472 posts
Posted on 5/13/10 at 6:07 pm to
I believe if the pressure on the pipe is known flow rate can be calculated.
Posted by BatonRougeRugby
Baton Rouge
Member since Jun 2009
169 posts
Posted on 5/13/10 at 6:08 pm to
on radio now...can't find it on web. According to a professor looking at the flow from the pipe.
Posted by MC123
Baton Rouge
Member since Sep 2005
2029 posts
Posted on 5/13/10 at 6:20 pm to
well if that is accurate:

50,000 barrels X 42 gal/barrel = 2.1 million gallons leaked per day

times roughly 20 days since the leak began = 42 MILLION GALLONS LEAKED so far

HOLY shite
Posted by BatonRougeRugby
Baton Rouge
Member since Jun 2009
169 posts
Posted on 5/13/10 at 6:26 pm to
Yeah, they said it is Valdez amount every few days.

Maybe that is why so much dispersant is being used - if it's not on the surface, it doesn't seem like it is as bad.
Posted by Sid in Lakeshore
Member since Oct 2008
41956 posts
Posted on 5/13/10 at 6:37 pm to
quote:

According to a professor looking at the flow from the pipe.
Posted by CootKilla
In a beer can/All dog's nightmares
Member since Jul 2007
5912 posts
Posted on 5/13/10 at 6:42 pm to
Do these peeps believe everything they read?


If so hey they just stopped the leak and actually reversed the polarity of oil and Its going back into the well it came from. Yeeeeeehaaaaaw
Posted by eye65
Member since Aug 2009
987 posts
Posted on 5/13/10 at 7:03 pm to
This may sound incredibly stupid...but at this point how much is actually leaking is moot. Stopping it is the only important issue. Whether it has been leaking 5000 bpd, or 50,000 bpd, we are already seeing the impact. It seems like assigning it a definitive number is just a huge waste of time. It is too much "fricking" oil...thats how much is leaking....(also skytruth has been asserting this number since day 2)....Now, who has the scoop on what went wrong with the top hat?
Posted by notiger1997
Metairie
Member since May 2009
58211 posts
Posted on 5/13/10 at 7:12 pm to
I really don't know what to believe, but NPR is not going to be my source if I am looking for facts.
Posted by tgrbaitn08
Member since Dec 2007
146214 posts
Posted on 5/13/10 at 8:02 pm to
I believe they take the weight/volume/density of the crude, the size of the pipe, the pressure of the resivior and the depth of 5000' and put into a formula and calculate the bbls.

that's how I would do it if I knew how.
Posted by wilceaux
Austin, TX
Member since Apr 2004
12406 posts
Posted on 5/13/10 at 8:14 pm to
quote:

but NPR is not going to be my source if I am looking for facts


So who would you believe, exactly?
Posted by wilceaux
Austin, TX
Member since Apr 2004
12406 posts
Posted on 5/13/10 at 8:18 pm to
quote:

also skytruth has been asserting this number since day 2


Actually, they have been estimating 26,500 barrels since May 1st.
This post was edited on 5/13/10 at 8:19 pm
Posted by baytiger
Boston
Member since Dec 2007
46978 posts
Posted on 5/13/10 at 8:25 pm to
quote:

This may sound incredibly stupid...but at this point how much is actually leaking is moot. Stopping it is the only important issue. Whether it has been leaking 5000 bpd, or 50,000 bpd, we are already seeing the impact. It seems like assigning it a definitive number is just a huge waste of time.
actually it could be very important if they want to attempt a fix by physically plugging the pipe... if it's 50,000 bbl/day I'd assume that the pressure involved with a plug would greatly alter their gameplan.
Posted by oilfieldtiger
Pittsburgh, PA
Member since Dec 2003
2904 posts
Posted on 5/13/10 at 8:29 pm to
quote:

I believe they take the weight/volume/density of the crude, the size of the pipe, the pressure of the resivior and the depth of 5000' and put into a formula and calculate the bbls.

yes, i'm sure that's part of it. this information is used to perform a nodal analysis of the flow and predict the anticipated flowrate. however, this is not conventional flow (up the ID of a single string of pipe). instead, what BP suspects is that that the well is flowing up the backside of the casing - so it is annular flow.

additionally, when nodal analysis is performed there's typically measured flow data to compare it to in order to validate the model. they don't have this here.

also, we're talking about unrestricted flow at the wellhead - wide arse open. that is an ultra-extreme case, and would it would be very difficult for the nodal software to handle it.

think of it this way -- watch the water flow out of a firehose and make a guess as to what the flowrate is.
Posted by NewGuy01
Internet
Member since Nov 2008
4243 posts
Posted on 5/13/10 at 8:31 pm to
quote:

I really don't know what to believe, but NPR is not going to be my source if I am looking for facts.


I would like to know whose stats you would trust as well. NPR can be liberal as frick, but they aren't exactly known for making things up.
Posted by notiger1997
Metairie
Member since May 2009
58211 posts
Posted on 5/13/10 at 8:40 pm to
quote:

but they aren't exactly known for making things up.


Maybe I was wrong to say that, but there have been quite a few articles that seem to have been full of shite.
I admit to not really knowing all that much in this, so lets just hope that a partial fix takes place soon.
Posted by oilfieldtiger
Pittsburgh, PA
Member since Dec 2003
2904 posts
Posted on 5/13/10 at 8:50 pm to
i don't believe NPR is making anything up; however, i heard the report this evening as well. it sounded to me like they had an academic view the tape and make an estimate -- so what exactly was this expert's qualifications? what school does he teach at? what department does he teach in? no specifics were offered.

this event involves a subject that i know a great deal about, and i have found most of the media reporting simplistic and slanted against the industry in general. not explicity by misstating facts, but more often by trying to relay a complex concept in simplistic terms, and phrased in such a way as to say "well, can you believe this stupidity! how can we allow such a thing?"

all i'm trying to say is that while most of the world thinks the oilfield is "just a bunch of idiots poking a hole in the ground and praying for goo" (mr. burns quote), this is actually an unbelievably complex operation and there's almost nothing simple about it. to paint it as such is a disservice to both the industry and the general public.
Posted by beaver
The 755 Club
Member since Sep 2009
46861 posts
Posted on 5/13/10 at 9:05 pm to
they're talking bout this on CNN right now...thats an exxon valdez every four days
Posted by wilceaux
Austin, TX
Member since Apr 2004
12406 posts
Posted on 5/13/10 at 9:05 pm to
quote:

so what exactly was this expert's qualifications? what school does he teach at? what department does he teach in? no specifics were offered.


"The analysis was conducted by Steve Wereley, an associate professor at Purdue University, using a technique called particle image velocimetry. Harris tells Michele Norris that the method is accurate to a degree of plus or minus 20 percent. That means the flow could range between 56,000 barrels a day and 84,000 barrels a day.

Another analysis by Eugene Chiang, a professor of astrophysics at the University of California, Berkeley, calculated the rate of flow to be between 20,000 barrels a day and 100,000 barrels a day."

LINK
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