I have an oil-flooded rotary screw compressor. This specific machine is female driven - motor shaft is connected to the female. This is one of the Leroi HG series.
Female has 6 lobes. Male has 4 lobes.
Assume gear ratio between female:male is 1. Assume female has 1000 RPM. This means female...
Is there any standards or charts that can help decide good operating temperature of a heater treater? A bit of studies I've done tells me that recommended heater T depends on the following:
1) API gravity of oil
2) viscosity of oil
3) operating pressure of heater
4) Field experience of your...
I've been reading through ISO 15156-2. There's two options for choosing corrosion-resistant materials in ISO:
1) Selecting from Annex A.2's Table A.2, which includes A106
2) More detailed selection guide based on the pH vs. H2S partial pressure plot
Since I'm interested in A106 already, it...
I'm planning to install 4x 500 BBLD oil storage tanks with API12F standards. It will be 12'(diamter) x 25' (height) storage tanks. My colleague tells me that there's a rule of thumb of maintaining 75' from the fire tube of a heater treater to storage tanks.
Three questions
1) Where's the 75'...
All of the atmospheric tanks I've seen at wellsite are rated at 16oz = 1 psig. Usually they have one safety valve and a thief hatch. PSV opens at 8~12oz. Enardo950 PRV is the most common that I've seen. This valve has both over-pressure and vacuum safety features. The tanks also have a thief...
@georgeverghese
I checked the hydrate temperature, it seems to be well above the hydrate temp (-34F) at 30 psig. Two follow up questions:
(Most likely I don't need pre-heating but still would like to learn for future applications.)
1) Are you suggesting to preheat before I drop pressure due to...
@georgeverghese
The HP source is the discharge side of a 3-stage recip. Also I mentioned 30 psig for the stripping gas, but this may be misleading. I'm just choosing to first reduce from +1000 psig HP pressure to 30 psig with one big regulator (may be two), and have an option to use that 30 psig...
I'm trying to design a small (1.2 MMSCFD) glycol dehydration unit for an upstream facility. My client wants me to run the worst case scenario, which is 130F gas inlet with 2% water. I ran extensive simulations, and concluded that I must have a stripping gas going into the reboiler to achieve 7...
@1503-44
wow you are awesome, literally saved 4~6 hrs of struggle that I would've had if I were to look these up on my own with no experience on regulations. Very informative, thank you!
@1503-44
Thanks for the very detailed answer. I've always heard that such regulations exist, but this is my first time actually checking the details.
On the other hand, is there any website or publications that list the detailed upstream wellsite regulations when it comes to venting and...
@LittleInch
Not sure where exactly its coming from but it's a gas supply (not air). There's a pressure reducing regulator set at 110 psig for the supply gas line so I'm assuming the supply gas for the pump is coming from a pressurized source operating higher than that.
It's 1" gas lines and 3"...
@georgeverghese
"A large gas cloud will appear around the tank relief valves"
Kind of late reply to this, but I've found a P&ID of of a pretty advanced upstream facility that has horizontal atmospheric separator rated at 100psig @200F, with operating condition @8oz. This atm separator has...
Hi, I'm seeing two kinds of P&IDs for primary separators from wellhead:
1) PSV venting to air
----> Safer, because it's always guaranteed to work (almost always). But its "dirtier"
2) PSV relieving to flare line
----> Cleaner, but if something goes wrong with flare line, HP shutdown will have...
@all
The tanks are probably API650 tanks rated at 2.5 psig. The upstream operators usually try to maintain 16oz or below pressure on atm tanks. Thief hatches are usually set at 10~14 oz, and PRVs slightly lower than thief hatch. I understand that there isn't much operating margin to ensure...
