Well Name Type wellNameType extWellNameType refinedWellNameType refinedExtWellNameType POSC 1.0 DTI United Kingdom Department of Trade and Industry API American Petroleum Institute NPD Norwegian Petroleum Directorate Local Field A name assigned that is meaningful within the context of the field in which it is located. There are not specifications on how to form this name. Prospect A name assigned to a prospect - a well that has not yet been drilled.