Derrick Removal Case Study

The Platform Operator are a long term client of DSL's where we regularly complete asset integrity and drilling structure scopes.

The removal scope came from the Projects Team who knew that DSL had a comprehensive Track Record in removing drilling structures utilizing the Floating Pole methodology, mitigating the need for costly HLVs.

CHALLENGES

• Completing a comprehensive Engineering analysis to ensure structure Integrity is maintained and proven throughout the dismantling Phase.
• Weather challenges and having enough fall-back work to complete during WAH downtime.
• Close Proximity of the Platform Flare to the drilling structure

Work-scope

• Install dedicated Tuggers on the Drill floor
• Remove Derrick Ancillary Equipment Using Tuggers
• Assemble and Install Floating Pole in the Derrick
• Load Test Floating Pole Assembly
• Remove gin pole utilising Floating Pole Assembly
• Commence removal of Derrick sections utilising Floating Pole Assembly from gin pole down to level 5 (top of derrick v-doors).
• Removal and disassembly of Floating Pole Assembly
• Removal of Derrick Stem from Level 5 to Drill Floor utilising Platform Crane.
• Removal of all Drilling Equipment from the Drill floor