sign in Glossary U Glossary Acronyms   A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z U UK Oil Portal The web portal under construction by the DTI. Unique Well Identifier An alpha numeric system for uniquely identifying wells. Within the UK this is the DTI well name. User Any person granted access to all or part of the System. An external user unless otherwise specified. Userid A short series of characters which identify a User to a computer. A Userid is usually associated with a password.