Platform Decommissioning in Asia

Decommissioning is an expensive and challenging activity that operators have successfully managed to push into the future for many years.  However, for a large part of Asia’s aging offshore infrastructure decommissioning is now becoming a reality.  
   
Statistics:

 

  • Asia has 380 offshore fields.

  • 2,600 platforms/pipelines with approximately 35,000 wells and subsea facilities.

 

Potential removal costs over a 50 year period are expected to approach $100 billion.

Decommissioning budget breakdown:
Structural components:     54%
Wells:                                46%

 

6 Steps to Decommissioning

•Permitting

•Removal of all Hydrocarbons

•Plug and Abandon Wells

•Topsides Decommissioning

•Removal of Steel

•Site Clean Up

What Can Be Decommissioned

  • Platform Topsides

  • Jackets

  • Wells 

  • Pipelines

  • Subsea Facilities

Platform Removal Options 

  • Remove/Re-Purpose/Re-Install

  • Partial Removal

  • Rigs-to-Reefs

  • Inshore Repurpose

  • Complete Removal

  • Leave in Place for Re-Purpose

Many factors come into play when choosing the ideal platform removal method.  The offshore industry has countless platform designs, each with a unique combination of factors that must be considered when selecting a decommissioning strategy. 

  • Platform Condition

  • Wells

  • Water Depth

  • Type of Platform

  • Weight

  • Laws

  • Weather

  • Ensure the objectives are clearly understood - What constitutes project conclusion and success? 

  • Plan the work holistically – consider all aspects of the work and include in a master plan with interfaces clearly identified and managed 

  • Review all elements on the critical path and engineer the work to remove items from the critical path or minimize the impact of them 

  • Establish the contracting policy clearly and early in the project

  • Appraise suppliers' abilities thoroughly before letting contracts – Assign risk to contractor only where he is able to assess and bear it 

  • Contracting policy firm but not immutable, encompassing management of change and risk with flexibility to react to unforeseen events 

  • Experienced project manager with maximum authority in overall charge 

  • Strong top management support

  • Adequate sized team, organized appropriately 

  • Commitment to making the contract work and the project a success 

  • Focus effort on opportunities within the plan at the earliest stage

  • Effective communications 

  • Accurate control information on the state of the project. 

  • Realistic cost control and forecasting including escalation and contingencies 

  • Effective and appropriate design, project management and control procedures

We offer the following Decommissioning support services:

  • Manage the entire process for the National Oil Companies, IOCs, etc.

  • Ensure Government Agencies procedures are followed.

  • Provide complete assessment of the 380 offshore fields.

  • Work with Governments to create Rigs to Reef sites.

  • Assemble top team to manage all aspects of Decommissioning activities and complete interface management.

  • Rank assets in order of urgency and assign priorities.

  • Create Work Breakdown Structure / Schedules / Budgets / etc.

  • Vet all sub-contractors to ensure competency. 

  • Some of the Services Needed:

  • Vessels: Derrick Barges, work boats, suppliers, subsea intervention, Dive/ROV, tug & barges, drilling rigs, crew boats.

  • TP&A Services: Engineering, Well management, NDE, structural assessment, cleaning, remediation, catering, mechanical cutting, cementing, pigging & testing, Safety, Inspection, etc.

  • Yards for platform storage, scraping, equipment, parking, crew change, supplies, fabrication of components, warehousing, mapping, positioning, etc.

  • Business processes: Payroll, AP/AR, subcontractor invoices, HR, materials, risk, banking, travel, etc. 

Decommissioning Champions with WWH:

Decommissioning Project planning best practices include: 

© 2019 by Wissmann & Associates LLC

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