Tokyo — Production at the giant Kashagan oil field in Kazakhstan’s sector of the Caspian Sea restarted Sunday following the completion of scheduled maintenance, a source with a partner in the field’s development told S&P Global Platts Monday.  A source with an East Asian buyer of Kazakhstan’s light sweet CPC Blend crude welcomed the news of the restart amid tightening supply in global oil markets. “Amid tightening supplies, we are grateful for the increasing supply of CPC [Blend crude] as a supply candidate,” the source said. CPC Blend is a light grade produced in western Kazakhstan with a specific gravity of around 44-45 API and a sulfur content of 0.5%-0.6%. The grade is exported through the 1,580 km (980 mile) CPC pipeline to an export terminal near Novorossiysk on Russia’s Black Sea coast. Kashagan last year became […]