Tengizchevroil

Tengizchevroil is a joint venture between Chevron (50% share in the consortium), ExxonMobil (25% share), KazMunayGas (20% share) and Lukoil (5% share). The joint venture was formed in April 1993, when the government of Kazakhstan granted exclusive 40-year rights to Tengizchevroil LLP (TCO) to develop the Tengiz and oil fields located in the north-eastern reaches of the Caspian Sea in Kazakhstan.