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Started By
Message
Well integrity test is a sham
Posted on 7/15/10 at 1:42 pm
Posted on 7/15/10 at 1:42 pm
LINK
I have no idea if this is true or not.
Seems interesting to me.
I have no idea if this is true or not.
quote:
We later received information that the Oil States FlexJoint actually in place is a Model 5, and therefore has a MWP (maximum working pressure) of 5000 psi. So now, the pressures Our Government has signed off on applying, are at least 2,000 psi differential pressure over the rating of the component!
quote:
But why take these risks? For what? The first relief well is SO close (now stopped)! They have the ability to capture and measure ALL the oil! We already KNOW there is damage downhole! Why would the Government of the United States of America sign off on, and take responsibility for this foolishness?
To avoid a single ... headline:
OBAMA TO BP: DON'T SHUT IN WELL!
quote:
I need to include here that I think this "test" is probably a good political and public relations bet for both the Obama administration and BP. It's really not a test at all and has no chance of actually testing anything about the well, except their ability to shut it in with no surface leaks. They want to shut in the well and get it off the nightly news.
Seems interesting to me.
6
Posted on 7/15/10 at 1:53 pm to Monkey
quote:
I have no idea if this is true or not.
And yet you chose to post it.
quote:
We later received information that the Oil States FlexJoint actually in place is a Model 5, and therefore has a MWP (maximum working pressure) of 5000 psi. So now, the pressures Our Government has signed off on applying, are at least 2,000 psi differential pressure over the rating of the component!
Common sense would tell you that they would not try a test expecting a pressure 2000 psi above the equipment's ability to handle it.
quote:
But why take these risks? For what? The first relief well is SO close (now stopped)! They have the ability to capture and measure ALL the oil! We already KNOW there is damage downhole! Why would the Government of the United States of America sign off on, and take responsibility for this foolishness?
The only thing foolish is this article. The relief well is a month away. Are we now saying that a month's worth of spillage is no big deal?
quote:
It's really not a test at all and has no chance of actually testing anything about the well, except their ability to shut it in with no surface leaks.
To paraphrase Ron White, that seems like a really important piece of information to have. If that's all they get out of the test, then it was a success.
quote:
Seems interesting to me.
Well that makes one of us.
Posted on 7/15/10 at 1:53 pm to Monkey
quote:
We already KNOW there is damage downhole!
Do we? Did I miss that?
Forgive me, I try to follow but may have missed it.
Posted on 7/15/10 at 2:06 pm to Monkey
quote:
MWP (maximum working pressure) of 5000 psi. So now, the pressures Our Government has signed off on applying, are at least 2,000 psi differential pressure over the rating of the component!
The MWP probably has a factor of safety of at least 3, after conservatives assumptions have been taken everywhere (like minimum tensile instead of actual, stress concentration factors instead of acatual or calculated stress...). I work pressure vessels and use similar terms such as MAWP. They are padded to the bajeebus (ETA: not that I've seen their calculations or inputs to them). Just so you know.
This post was edited on 7/15/10 at 2:10 pm
Posted on 7/15/10 at 2:17 pm to Monkey
quote:
Oil States FlexJoint 5000 psi actually in place is a Model 5, and therefore has a MWP (maximum working pressure) of 5000 psi
1st back before the oil patch bottomed out in the 1980s I did work on land rigs back home.
then it hit bottom and no nore oil work. I ended up being a welder/fitter, on pipe then move on to tanks, and then to pressure vessels.
on pressure vessels the hidro test pressure is
1 1/2X the working pressure.
so that 5000 psi FlexJoint should test at 7500psi eazy
Posted on 7/15/10 at 2:35 pm to jeff967
in addition to the factor of safety designed into the system, keep in mind that there is 2200 psi of pressure behind the lower flex joint exerted by the 5000' of water.
i'm not a subsea equipment expert, but i believe lower flex joint pressure ratings are based on full angle. so in this case it would be able to hold 5000 psi differential at 10 degrees of inclination. however, this flex joint has been shimmed to remain vertical and hold the weight of the capping stack on top.
i'm certain oil states was intimately involved in the design process of this capping stack, and they would not be attempting if they did not have confidance in the LFJ's ability to hold the pressure.
i'm not a subsea equipment expert, but i believe lower flex joint pressure ratings are based on full angle. so in this case it would be able to hold 5000 psi differential at 10 degrees of inclination. however, this flex joint has been shimmed to remain vertical and hold the weight of the capping stack on top.
i'm certain oil states was intimately involved in the design process of this capping stack, and they would not be attempting if they did not have confidance in the LFJ's ability to hold the pressure.
Posted on 7/15/10 at 3:04 pm to MountainTiger
quote:
Common sense would tell you that they would not try a test expecting a pressure 2000 psi above the equipment's ability to handle it.
Common sense tells me that they would have had a plan to clean up the oil or shut the will down in the event of catastrophic event. My engineering background is in software, not petroleum.
With that said, I don't trust BP or the gov't to tell the truth here. Both have proven to me that they have issues with the truth.
Posted on 7/15/10 at 3:13 pm to Monkey
And yet you choose to believe in a fear-mongering website run by someone with zero knowledge of the oil industry?
This post was edited on 7/15/10 at 3:14 pm
Posted on 7/15/10 at 3:17 pm to MountainTiger
quote:Retarded. It's pressure tested to at LEAST 1.5X the working pressure before it leaves the shop. If the guy had any shred of credibility, or working knowledge of oilfield equipment he'd know this.
We later received information that the Oil States FlexJoint actually in place is a Model 5, and therefore has a MWP (maximum working pressure) of 5000 psi. So now, the pressures Our Government has signed off on applying, are at least 2,000 psi differential pressure over the rating of the component!
Posted on 7/15/10 at 3:24 pm to Monkey
quote:
We already KNOW there is damage downhole!
really?
LINK?
Posted on 7/15/10 at 3:52 pm to ottothewise
Looks like the page has been taken down. 
Posted on 7/15/10 at 9:00 pm to Monkey
quote:
I have no idea if this is true or not.
It's fine to be uninformed about technical matters and ask honest questions, but brazen propaganda designed to suck in the gullible should be obvious.
Posted on 7/15/10 at 9:05 pm to Monkey
quote:
With that said, I don't trust BP or the gov't to tell the truth here. Both have proven to me that they have issues with the truth.
You should pay more attention to MountainTiger's sig:
Never attribute to malice that which can be adequately explained by incompetence.
In this case, obviously someone on Deep Horizon fricked up. That doesn't mean everyone at BP is involved in a vast conspiracy.
Big organizations are still made of individuals, you know, at least some of whom have a personal stake in shutting down this spill. Think about that for a minute at least.
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