Chevron has sold nearly all its share of gas from the first phase of the $11 billion Gorgon gas project off WA's north west coast, worth about $30 billion over 25 years from 2010.

Chevron has sold nearly all its share of gas from the first phase of the $11 billion Gorgon gas project off WA's north west coast, worth about $30 billion over 25 years from 2010.