Flow Assurance Technical Section

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  • 1.  In-House Integrated Flow Assurance Real-Time Modeling

    Posted 02-24-2016 09:51 AM

    Several Operators have published papers on the integration of Flow Assurance Models in real-time data from subsea and topsides to be used a predictive tools for hydrates, scale, asphaltenes, wax, slugging, etc. The 2 I’ve read so far are:

    1. OTC-25740-MS - Online Transient Simulation in Deepwater Operations: Practical Experiences (BP Angola)
    2. SPE-124535-MS - Flow Assurance Design and Initial Operating Experience From Blind Faith in Deepwater Gulf of Mexico (Chevron – Blind Faith)

    While excellent in showing how integrating models into real-time data helps Operations with What-If scenarios, transient data, predictive tools, etc, they both rely on 3rd-party licensing for ongoing Operations and Support. I’m not at all against this, but in the current price environment I know that this can get very expensive, very quickly.

    Most (if not all) deepwater operations have access to real-time data (both subsea and topsides), engineering documents (e.g. flowline layouts, insulation details, etc), and plenty of fluid characterization, so all the “inputs” into a flow-assurance model are already there. The only issue I see is building the model and integrating it within a GUI for Operators to use, then tuning it based on historical data and live data.

    1. Does anyone have experience of trying to do this in-house but then using other 3rd-party for validation and calibration?
    2. If so, what timeline did this take?
    3. What would you do differently (i.e. is it worth it in the end, or would you just go back to relying on other 3rd party software to manage it all?)
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    Bryan Arciero, PE
    Staff Process Engineer
    Murphy Exploration and Production
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  • 2.  RE: In-House Integrated Flow Assurance Real-Time Modeling

    Posted 02-15-2022 04:59 AM
    Bryan,
    Very good point. An integrated digital solution was developed in-house few years back, providing real-time analysis of hydraulics, thermal conditions, hydrate inhibitor requirements and tracking in the whole system (onshore plant+offshore platforms).
    Took an estimated 600 man-hours to develop one from scratch, and 300 hours a pop to replicate to other fields.
    Operations love the excellent match of liquid holdup, arrival temperatures and the upstream pressure.
    Very much worth it, generated humongous nine-digit extra revenue and some OpEx savings. Unpublished.
    Best regards,
    Taras

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    Taras Makogon
    Dhahran
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  • 3.  RE: In-House Integrated Flow Assurance Real-Time Modeling

    Posted 02-16-2022 03:22 AM
    hi taras,

    75 mandays for onshore+offshore system? pretty impressive. May I ask the dimension; for how many trunklines?

    Thanks
    Afiqah