API Well Number : A unique numeric identifier for a hole-in-the-ground. The identifier is assigned on the basis of surface location and extends from the surface to total depth. (Bul D12A)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}