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NESSE SBM#6 IWC - Intelligent Well Completions Installation & Well Control Challenges

NESSE SBM#6 IWC - Intelligent Well Completions Installation & Well Control Challenges. Benni Toldo - Completions Engineer Woodside - Perth, Australia. P swab < P res risk of well influx. Well Control during IWC installation.

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NESSE SBM#6 IWC - Intelligent Well Completions Installation & Well Control Challenges

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  1. NESSE SBM#6IWC - Intelligent Well Completions Installation & Well Control Challenges Benni Toldo - Completions Engineer Woodside - Perth, Australia

  2. Pswab < Pres risk of well influx Well Control during IWC installation • IWCs are typically installed without a reservoir isolation barrier (eg FIV) • String motion generated from rig heave can induce to a well influx • Main parameters affecting the swabbing effect: • - Rig motion (heave and amplitude) • - Completion design: Flow paths across the completion • - Clearances: flow areas open to fluid movement • - Wellbore Fluid viscosity Looking for other Operator’s experience

  3. Wellbore Influx Well Killing Kill fluid Annulus isolation with control lines across could be problematic Can we kill all the zones effectively and proceed landing the completion? gas gas Well Control during IWC installation Run In hole Upward string movement can swab the formation gas

  4. Well Control during IWC installation • Swabbing effect is greater for 3+ zone completions • Risk is higher for gas wells • Risk Mitigations: • Running Speed • Increase overbalance • Packer Clearance • Control fluid viscosity • Impose rig heave restrictions Questions How do we model this? Any experience good/bad to share?

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