Online Risk Register

Lack or loss of integrity of the well/subsurface equipment

Lack or loss of integrity of subsurface equipment can be due to integrity failures due to poor cementation practices, mechanical damage during well development, corrosion and scaling, geo-mechanical disturbances, thermal stress and material failure or degradation, and aging over the life cycle of operations (drilling, work-over, exploitation, abandonment). It can also be due to equipment deficiencies.

Informations

  • Category: Environmental risks
  • Id: F-7
  • Phases:
    • Drilling / Testing
    • Exploitation / Development
    • Post-closure
  • Consequences:
    • Economic / Performance / Acceptability
    • Health / Safety / Environment

Mitigation

  • Prevention:
    • Thorough cementing procedures -Thorough well design
    • Perform adequate evaluation of corrosion and scaling potential 
    • Adapt the material selection to the chemical/physical properties of the fluid
    • Temperature Maintenance
  • Monitoring:
    • New sampling and chemical analyses
  • Corrective measures:
    • Regular maintenance of the equipment, replacement or patch if needed

More information is available on the project deliverable (link), or navigate on the online version.