Kazakhstan’s Tengiz oilfield will remain offline for at least another seven to ten days following the fire-related shutdown announced earlier this week, extending an outage at one of the world’s most important non-OPEC crude producers, Reuters reported. Production at Tengiz was halted after fires broke out at a power facility supplying the field, forcing operators to shut in output as a precaution. At the time, no timeline was provided for a restart, raising concerns about a potentially prolonged disruption at a field that produces…