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Isolation Valve Installation Readiness

Addressing the challenges in capping the well with the dual ram or isolation valve assembly in deep waters, proposing onshore and offshore trials to enhance success probability. Explore issues, trial objectives, site suitability, and schedule planning.

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Isolation Valve Installation Readiness

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  1. MC 252 Incident Response Isolation Valve Installation Readiness Trevor Smith/Mark Nichols 11 May 2010

  2. Problem Statement Capping of the well with the dual ram or isolation valve assembly will require: • stabbing into a flange opening which may be obstructed by debris and flowing oil and gas • aligning and bolting up a flange connection which is designed for make-up on the drill floor • and performing this for the first time at 5000ft water depth, suspended from a drill rig Proposal: perform onshore and/or onshore trials to maximize probability of success

  3. MC 252 Site Overview

  4. Top of BOP Stack

  5. Mule Shoe Detail

  6. Readiness Summary

  7. Trial Objectives & Site Suitability

  8. Schedule DRAFT

  9. Other Issues • Decide if trials are necessary, if so which & when • Define Accountabilities • Confirm ROV vessel for flange unbolting • Confirm ROVs for flange make-up (DD2 or other support vessel)

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