Kazakhstan’s largest oilfield has been forced into a temporary shutdown after fires damaged a critical power generation and distribution facility at the Chevron-operated Tengiz oilfield, extending a run of supply interruptions in Kazakhstan. Production and exports were halted following damage to site power systems serving the field and the adjacent Korolev oilfield, media cited Kazakh officials as stating on Monday. The shutdown was confirmed by Upstream Online and Energy Intelligence, both citing official statements from operator Tengizchevroil…