Author Topic: Subsea Production Choke Modeling in OLGA  (Read 4489 times)

skywalker09

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Subsea Production Choke Modeling in OLGA
« on: May 23, 2008, 07:30:44 PM »
I am trying to simulate the J-T cooling at Choke valve during Subsea tree startup using OLGA. I am not a petroleum engineer, so please be kind. I have a few questions:

1. Is OLGA the right tool to perform a transient simulation of Choke opening operation?

2. What is critical flow in the context of a Choke Valve? Does criticality of flow affect J-T cooling (or heating)? Is it related to the inversion temperature?

3. I am trying to find typical values of parameters so my calculations will be fairly representative of the different field conditions. Will the black oil model be a good approximation?

4. Generally speaking, are production fluids with high proportion of oil are more susceptible to J-T cooling? Or, the ones with higher gas percentage?

5. During a well startup, what might be "maximum ΔP" across the Choke? I imagine the maximum ΔP is experienced immediately after the Choke is cracked open.

6. During full blown production, what may the ΔP across the Choke?

Thank you.

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Subsea Production Choke Modeling in OLGA
« on: May 23, 2008, 07:30:44 PM »

SysEng

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Re: Subsea Production Choke Modeling in OLGA
« Reply #1 on: July 13, 2010, 11:27:26 PM »
Not sure if this will help, but there is a webinar later this week on pipeline modeling and transient analysis. Maybe it would help:

http://www.flowmaster.com/webinars/piping_process_series_2010.html?utm_source=LinkedIn_OE&utm_medium=email&utm_campaign=FMUSA_P&P%20_Part3_Webinar_Q310