Element 04×Subsurface
Subsurface in Stakeholders
Stakeholders and Customers
What Subsurface owns here
This element holds subsurface interfaces — joint venture governance, regulator reporting, internal interfaces with wells and facilities, and external data providers.
Example documents, by tier
Process, procedure, work instruction 2
- Joint Venture Subsurface Governance ProcedureTypical exampleCompany-wideAlso in EI PSM · 10 Management of operational interfacesNot process safetyNot safety case critical
- External Data Provider Interface ManagementTypical exampleCompany-wideAlso in EI PSM · 07 Documentation, records and knowledge managementNot process safetyNot safety case critical
Why these belong here
"Subsurface is highly connected — and if it is wrong, everything built on top of it is wrong."
What does not live here
- →The internal procedures that deliver the interface — (Plans and Procedures)E07 Procedures
- →The risks at the interface — (Risk Assessment and Control)E05 Risk
- →The audit of interface effectiveness — (Assurance, Review and Improvement)E10 Assurance