Top Deck – Hydraulic Workover Unit (HWU) layout schematic.

Project specific challenges included:

• Requirement for large top deck to accommodate a large hydraulic workover spread; and
• Platform crane design - Needed to be located to enable access to all well locations in addition to supply boat operations.

The ICON scope of work included the following deliverables:

• Platform Basis of Design and Functional Specification;
• Process and Utilities Definition, and Equipment List;
• Platform Layout – Topsides and Substructure.
• Platform Weights - Topsides and Substructure; 
• Basic Workover Equipment Layout and Interfaces;
• Installation Methodology; and
• Platform Cost Estimate and Schedule.

Following the completion of this Concept Study the major features of the Platform were:

• Minimum facilities WHP topsides that incorporates all required interfaces including FPSO and well workover;
• Slim, vertical four-legged jacket that can be readily installed by the Jackup drill rig;
• Vertical drilled and grouted piles/well conductors– one inside each jacket leg, installed using the Jackup drill rig; and
• Large top deck and platform crane to accommodate the portable Hydraulic Workover Unit (HWU).

Platform Schematic for 400mT unmanned wellhead platform.