Gradual increase to normal levels after protests at remote site Tengiz is largest contributor of CPC export blend CPC, a light, relatively low-sulfur crude, is Kazakhstan’s main export blend Kazakhstan’s Tengiz oil field, the country’s highest-producing crude source, is gradually returning to normal production levels after protests at the site disrupted operations, the Chevron-led operating consortium, Tengizchevroil, said Jan. 9. Receive daily email alerts, subscriber notes & personalize your experience. Register Now Tengizchevroil (TCO) said Jan. 6 it was making an “adjustment” to production levels at Tengiz — the largest contributor to CPC crude blend — after contract workers mounted a protest in support of demonstrations elsewhere in the west of the country linked to fuel price increases. In a Jan. 9 update, a TCO spokesperson told S&P Global Platts the consortium “continues to focus on ensuring the health and safety of its workforce,” and “all production facilities […]