ConocoPhillips Green Canyon Platform Decommissioning

InterAct developed the strategy and concepts to safely decommission the deep-water offshore production facilities in the Jolliet and Marquette fields in the Gulf of Mexico. The Jolliet facilities include a tension-leg well platform (TLWP), 20 wells, foundation and drilling templates, risers and flowlines in 1760 feet of water. This is the deepest TLWP to be abandoned in the U.S.

InterAct obtained all major agency approvals necessary for decommissioning and removal of the facilities, including those from the MMS, Louisiana Department of Wildlife & Fisheries, U.S. Coast Guard, and Army Corps of Engineers. The workscope included: developing the preliminary philosophy and plans, permitting deliverables, planning, cost estimate and schedule, economic and project risk identification and analysis, and defining resource requirements. Follow-on work included refining the cost estimate to obtain corporate funding, developing a cross-functional integrated schedule, permitting, identifying HSE issues, preparing final Execution Plans, issuing contracts, procurement and logistics to achieve the optimum dismantlement timing and cost.

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