Upstream Lifecycle · 01
Exploration is where the upstream asset begins: understanding the subsurface, identifying petroleum-system elements, imaging geological structures and determining where an exploration well should be drilled.
Exploration workflow
Exploration brings multiple disciplines together. Geological interpretation provides the framework; geophysical and seismic data help constrain the subsurface; prospect evaluation then determines whether an opportunity justifies further investment and drilling.
Establish the geological setting of the basin and understand the elements that may support a working petroleum system.
Key activities
Use geophysical data to image the subsurface, understand structure and identify potential closures and drilling targets.
Key activities
Integrate geological and geophysical evidence to rank prospects and assess the uncertainty and potential of each opportunity.
Key activities
Translate the subsurface interpretation into an exploration well objective, prognosis and drilling concept.
Key activities
Integrated disciplines
The disciplines are not isolated subjects. They contribute evidence to a common subsurface interpretation and ultimately support an exploration decision.
Exploration decision
A prospect must be evaluated as an integrated petroleum-system opportunity. Source, reservoir, seal, trap, charge, timing and data uncertainty all contribute to the decision to progress, mature or drill an opportunity.
Next stage
Once a prospect is selected, the exploration well provides the subsurface evidence needed to determine whether a discovery has been made and whether it warrants appraisal.