A while back I was told threading a SCH40 pipe "makes it SCH20 at the threads". During a conversation today with a friend I was contemplating this rule of thumb and wondering if it's true? Where would I look up information on how much metal is removed at the threads, what is the resulting wall...
When modeling pipelines, does one assume that your process simulator will provide an accurate (as accurate as your compositional input and operating parameters, of course) representation of gas breakout in the system, or does one use a rule-of-thumb or fudge factor to add vapor to determine the...
Working on a project to install two pipelines, freshwater and produced water, going 10 miles from one atmospheric pit to another. They don't mix if course. It has been determined that a booster pump station must be installed at a midpoint which also happens to be at the bottom of a...
I was wondering if y'all had any rules of thumb or metrics for tracking construction project on upstream/midstream type construction projects. Do you total up all the pipe weld inches and track completed vs total? Linear feet of pipe laid and completed? Vessels set? There's a lot of things...
What defines the capacity of a gun barrel? Is it simply a very large (for the most part) 2-phase liquid/liquid vertical separator?
Must the gun barrel be taller than the tanks it feeds into, or must the level simply be higher to avoid having to pump? I think this is pretty obvious but never...
Anyone have a step-by-step method for obtaining elevation data from a Google Earth .kmz file? I'm in the process of reviewing a pipeline route (probably going to be about 10 miles long) through some back-country in Texas. Elevation changes are on the order of +/- 200 feet at the most extreme...
(I apologize for the cross post, I posted in Gas Distribution but I thought after the fact this might be a better forum?)
Forgive my ignorance here. I got asked a question that I had not considered before so I don't have a good answer at the moment. Hope y'all can help.
Why is it we generally...
Forgive my ignorance here. I got asked a question that I had not considered before so I don't have a good answer at the moment. Hope y'all can help.
Why is it we generally don't see brass or ductile iron in oil and gas (upstream or midstream) service? My first answer was that ductile iron...
I have decline curves that I need to schedule into some sort of overall production rate over time. I was wondering if anyone had a spreadsheet they'd care to share that might accomplish this?
Other than the cost and the fact that API 12F doesn't have a 1000 bbl tank, what other considerations should be reviewed when considering a 1000 bbl vs 500 bbl tank for a new upstream central tank battery?
Talking with these vendors, they'll build the 1000 bbl tank "to API 12F" criteria, so I...
I've searched around but it's escaped me. What correlations exist for the estimation of carryover from a two or three phase gas/liquid separator?
I'm rating some spare 3ph vertical separators we have in our yard. The inlet nozzle is definitely too far up the side of the vessel, based on the...
I've lost all references to previous instances, and am trying to recall what the typical criteria is for vacuum rating for an oilfield tank corresponding to API-650. I want to say it's -4 inches of H2O, but I don't want to say that to an engineering certainty.
For that matter, what typically...
From Chopey (2nd and 3rd edition) I have this formula (reproduced on this web page in part two of the calculation procedure).
I'm trying to find an equivalent formula in a reference text (started with McCabe Smith & Harriott) but I can't find any support. My problem is knowing where the...
Where can I find, or calculate, this value? Looking for Btu/(hr ft2 °F).
Is there any other information I need to provide to help locate this value?
Thanks!!
-m
I'm sure this is an incredibly broad question, but I'll give it a go.
At what point does the design go from a stabilizer unit with mechanical refrigeration (propane loop) to a cryo unit?
I'm looking at a gas stream that simply won't pass muster on the sales gas side Btu limit (1050 Btu/scf)...
This is a cross post from another forum as I'm not sure I posted it in the right place.
Question has come up now and again and I don't have a really good answer for it. If this is the wrong forum, please direct me to the correct place to post this. Thanks.
Let's say I have a system that is...
Question has come up now and again and I don't have a really good answer for it. If this is the wrong forum, please direct me to the correct place to post this. Thanks.
Let's say I have a system that is designed for 300 psig maximum operating pressure. I ensure that all my instrumentation is...
I have a PSV that needs to be upsized from an E to an F orifice as the capacity needs to increase. The body is changing from a 1x1 to a 1.5x2. The orifice area is going from 0.212 in2 to 0.337 in2 as a result.
I'm hoping to avoid having to re-weld the inlet and outlet TOL's for the new PSVs...
I was tasked with identifying and testing all critical instruments within our facilities. The first issue I am having is whether or not there is a definition of what a critical instrument actually is.
Searching online did not result in anything I would call "official". I did find a couple...
Working through my understanding of the code, so there's a few random questions here. Thanks in advance for your help. (I'm using B31.3-2012.)
[ol 1]
Do you bother to calculate Y when t < D/6, or do you just use Table 304.1.1?
When solving for P using equation 3a or 3b, does that confirm that...
