Element 06×Subsurface
Subsurface in Integrity
Asset Design and Integrity
What Subsurface owns here
This element holds the subsurface systems and models — the technical asset of the subsurface function, where data integrity, model governance and traceability live.
Example documents, by tier
Standard 5
- Petroleum Resource Classification and Conversion FactorsIn 1 of 3 operator registersCompany-wideAlso in EI PSM · 11 Standards and practicesNot process safetyNot safety case critical
- Subsurface Data Management StandardIn 1 of 3 operator registersCompany-wideAlso in EI PSM · 07 Documentation, records and knowledge managementNot process safetyNot safety case critical
- Well and Formation Integrity Aspects of InjectionIn 1 of 3 operator registersCompany-wideAlso in EI PSM · 15 Inspection, maintenance and asset integrityAlso in Process Safety · Asset integrityNot safety case critical
- Rock Mechanics Data CollectionIn 1 of 3 operator registersCompany-wideAlso in EI PSM · 11 Standards and practicesNot process safetyNot safety case critical
- Pore Pressure, Stresses and Shear Failure in Well PlanningTypical exampleCompany-wideAlso in EI PSM · 06 Hazard identification and risk assessmentAlso in Process Safety · Design integrityNot safety case critical
Process, procedure, work instruction 1
- Well Surveillance and OptimisationIn 1 of 3 operator registersAsset · addsAlso in EI PSM · 09 Process and operational status monitoring, and handoverNot process safetyNot safety case critical
Supporting documents 1
- Subsurface Statement of Requirement TemplateIn 1 of 3 operator registersCompany-wideAlso in EI PSM · 07 Documentation, records and knowledge managementNot process safetyNot safety case critical
Guidance · outside the system 1
Informative, not a “shall”. These belong in the knowledge base, not the management system. How this works →
- Exploration Data Ownership GuidelineIn 1 of 3 operator registersCompany-wideAlso in EI PSM · 07 Documentation, records and knowledge managementNot process safetyNot safety case critical
Why these belong here
"This is about ensuring data is reliable, models are traceable and decisions can be audited."
What does not live here
- →The standards for what good data looks like — (Policies and Standards)E02 Policies
- →The procedures for using the systems — (Plans and Procedures)E07 Procedures
- →The independent verification of the models — (Assurance, Review and Improvement)E10 Assurance