Laser Technology used for P&A in the UK 

  • ConocoPhillips has been using laser cutting tools, developed in partnership with Foro Energy, for offshore multi-string conductor cutting and surface boring and sectioning.
  • Technology advantages include efficient deployment of conductor severing and surface sectioning platforms and the potential for rigless conductor cutting in the future.
  • Rig time reductions of 20 - 40%, with associated cost savings, have been achieved in comparison to traditional mechanical / abrasive cutting methods.  

Key Findings

  • Comprehensive QA/QC auditing with COP hold points prior to deployment is a vital part of deployment and execution procedures and has resulted in trouble free operations.
  • Future deployment in the UK Southern North Sea will be run in offline configuration, increasing cost savings potential.
  • Down-hole conductor cutting during recent Viscount deployment has resulted in 8 of 9 cuts confirmed and 100% success rate with surface cutting advancing the technology into a commercial ready state  

Viscount Deployment (UK SNS) 

  • Trouble-free operation
  • Down-hole conductor cutting: 8 of 9 cuts confirmed
  • 100% Success Rate with Surface Cutting
  • Estimated Rig Time savings 20 to 40%

Viscount Platform – Southern North Sea
Viscount Platform – Southern North Sea

W2Z cut made at 270.6ft depth
W2Z cut made at 270.6ft depth

Sectioning and Pinning Tool
Sectioning and Pinning Tool

W1Z cut made at 267ft depth 2.5ft below mud-line
W1Z cut made at 267ft depth 2.5ft below mud-line

For More Information:
Matthew Pritchard
Manager, Technology Value Optimization
ConocoPhillips
Houston, Texas
Matthew.J.Pritchard@conocophillips.com