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  1. 4nmike

    Subsea Free-Flooding Calculation

    With a 7" ID, with a seabed pressure of approximately 3000 psi, and a 4" hose going through a 2" hot stab flooding cap. The flowrate was a consistent 1500 Liters/minute. Sorry for the mixup in units, but it was all measured in that.
  2. 4nmike

    Subsea Free-Flooding Calculation

    The subsea flooding equipment was something I have done in the past, and it is not used for this project. I was stating the fact that when I was able to have a flowmeter it was a constant flow. I guess disregard that statement. My current setup is I have a 5.25" pipe x 10 feet, a 5.125" gate...
  3. 4nmike

    Subsea Free-Flooding Calculation

    We are free-flooding through a temporary structure so we are not in danger of damaging any critical equipment. We have free flooded many times in the past as well. Now when I use subsea flooding equipment and have a flow meter attached, it shows (more or less) a constant flow through the unit...
  4. 4nmike

    Subsea Free-Flooding Calculation

    Thanks for the response! So basically if I calculate the various pressures throughout various stages (5% filled, 10% filled, etc), adding in friction loss, I can find out the average flowrate of the entire pipeline? I don't have access to a transient simulation software (nor I would know how...
  5. 4nmike

    Subsea Free-Flooding Calculation

    Hello all, I have a question that is really bugging me - I cannot calculate the flowrate (in gpm) if you open a valve to an empty pipeline subsea! Here are my parameters: Length of pipe: 30000 feet Inner Diameter: 5 inches Inner Pressure prior to flooding: 1 Bar Seabed pressure: 40 bar I...

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