appraisal — Oil & Gas Glossary
The phase of petroleum operations that immediately follows successful exploratory drilling. During appraisal, delineation wells might be drilled to determine the size of the oil or gas field and how to develop it most efficiently.
In the News
Occidental, Chevron and Woodside Confirm Bandit Oil Discovery at Green Canyon 680; Petrobras and BP Strike Pre-Salt Hydrocarbons 201 km Off Rio de Janeiro
Exploration & ProductionApr 15, 2026
Eni and BP Announce 2 Tcf Gas Discovery at Temsah Concession Offshore Egypt
Exploration & ProductionApr 11, 2026
TPAO Drillship Cagir Bey Begins Somalia Curad-1 Well, Horn of Africa Debut Targets 30 to 40 Billion Barrels in Frontier Offshore Basin
Exploration & ProductionApr 9, 2026