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Recent content by udaveu

  1. udaveu

    Free flooding of subsea pipeline

    sorry, biginch, I am leaving the office untill Monday...than we continue...have a nice weekend and thanks
  2. udaveu

    Free flooding of subsea pipeline

    Hm, I don't think I would get a realistic timing for free flooding this way.Basically the water should fill the line and traped air pressure will be continually increased until it reaches ~7 bar and check valve on another side opens and air will start to discharge out of the pipeline. The flow...
  3. udaveu

    Free flooding of subsea pipeline

    Ok. First, the pressure inside pipeline is 1 barA and static pressure outside at the entering point is ~10 barG (at 100m water depth). It is definitely lower pressure inside pipeline before start of free flooding. Secondly, I agree your point for a profile but we can assume the continious...
  4. udaveu

    Free flooding of subsea pipeline

    Thanks For a quick reply :) So, at the begining, before opening, pipeline is full of air and closed so we can consider the pressure is 1 barA. The pipeline will be free flooded by opening a 4" ball valve with sea water. Temperature of water will not make a big impact but we can assume its about...
  5. udaveu

    Free flooding of subsea pipeline

    I have a problem to calculate a free flooding of offshore subsea pipeline. I would like to calculate it with as minimum aproximations as possible.The calculation is not so simple since the pressure in pipeline is changing as the pipeline is filled with water. The concept is to fill the pipeline...
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