steam soak — Oil & Gas Glossary

Crude oils with high viscosity (typically above 10 cP), and gravity lower than 22.3° API are classified as heavy oils. These crudes generally require special producing techniques to overcome their high viscosity. This special section in the Oilfield Glossary reflects the growing importance of heavy oil to the E&P Industry, and provides an evergreen, comprehensive listing for major heavy-oil terms.