nlpm
Chemical
- Jun 17, 2005
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what the procedure i must follow to size slug catcher volume if i have liquid holdup,slug volume,slug length, slug frequency
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slug catcher design
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There are some two phase flow capable programs available. Schlumberger has one, Olga2000 is another. Olga used to be here, but apparently this group has bought them out. Unfortunately their website links to the Olga program don't appear to be working yet. Maybe their phone number works.
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nlpm
Chemical
- Jun 17, 2005
- 38
- 0
- 0
Ok, Schlumberger program only simulate the two phase and determine the type of flow,liquid holdup,slug volume,slug length and slug frequency but not determine Slug catcher size or design, i ask if there is program can help in slug catcher desgin or how can i use the output of pipesim to design slug catcher
Once you know the size and frequency of the slugs, its just a matter of knowing how many you will collect before you empty the slug catcher. That will depend on what you will do with them and how you will do it, pass them along to another holding tank, send them for processing, truck them off, etc. Determine a reasonable frequency (+ a time safety factor) of whatever downstream operation you need to perform and size the slug catcher for catching all slugs during the period of that downstream operation frequency.
For example if you will receive 1000 bbl slugs, say once every 4 or 5 days, and you can only schedule one 40,000 gal truck a week, you need to make a slug catcher with at least a 2000 bbl capacity + some volume for a safety factor for truck delays or a catching a little bigger slug than you planned on, so say a slug catcher of about 3000 bbls capacity should do.
For example if you will receive 1000 bbl slugs, say once every 4 or 5 days, and you can only schedule one 40,000 gal truck a week, you need to make a slug catcher with at least a 2000 bbl capacity + some volume for a safety factor for truck delays or a catching a little bigger slug than you planned on, so say a slug catcher of about 3000 bbls capacity should do.
In this ady and age slug catchers are a little more complicated. We have just fiquired out the size and duration of the slugs, but I've never seen a slug catcher used where a truck pulls up and carries it a way.
We typically drop the fluids into a tank first. This way the the you only need to design a slug catcher for one slug, then dump it a rate fast enough to empty it before the next slug. Your storage tank will now be a low pressure vessel and adjustable in size easily to compensate for liquid removal.
Here's the difficult part todat. EPA and VRU economics. All those liquids will empty from a slug catcher and flash off money and EPA noncompliance. Now you have to size a VRU. The VRU is a function of the rate you dump liquids from the slug cather to the storage tank. Now you will have to find the equalibrium balance between the VRU, Slug catcher and storage tank.
Simply put, you could put in the MOASC and have a 2HP VRU that runs 24/7 or you could put in a 10 BBL slug catcher witha 8" dump valve and a 100 HP VRU that runs 5 seconds and shuts down until the next slug comes in.
We typically drop the fluids into a tank first. This way the the you only need to design a slug catcher for one slug, then dump it a rate fast enough to empty it before the next slug. Your storage tank will now be a low pressure vessel and adjustable in size easily to compensate for liquid removal.
Here's the difficult part todat. EPA and VRU economics. All those liquids will empty from a slug catcher and flash off money and EPA noncompliance. Now you have to size a VRU. The VRU is a function of the rate you dump liquids from the slug cather to the storage tank. Now you will have to find the equalibrium balance between the VRU, Slug catcher and storage tank.
Simply put, you could put in the MOASC and have a 2HP VRU that runs 24/7 or you could put in a 10 BBL slug catcher witha 8" dump valve and a 100 HP VRU that runs 5 seconds and shuts down until the next slug comes in.
Haven't been out of the USA in awhile?
Trucking is still pretty common in a lot of the worlds oil fields, but no matter, it was simply an example of some type of a scheduled downstream processing event. Substitute dumping it to a VRU if you like.
Trucking is still pretty common in a lot of the worlds oil fields, but no matter, it was simply an example of some type of a scheduled downstream processing event. Substitute dumping it to a VRU if you like.
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