What was the impact of the drone attacks on Kazakhstan's Tengiz oilfield output, and how does that compare to its July average?

According to the news, output at the Chevron-led Tengiz field—Kazakhstan's largest oilfield—more than halved to around 406,000 barrels per day on Wednesday from an average of 925,000 bpd in July. This sharp decline is directly linked to the closure of the Black Sea terminal used for exporting Kazakh crude after drone attacks targeted tankers there.

How much did Kazakhstan's total oil and gas condensate production drop on Wednesday compared to its July average, and what caused this decline?

Overall oil and gas condensate output in Kazakhstan fell to 1.63 million barrels per day on Wednesday from a July average of 2.07 million bpd, a decrease of 440,000 bpd. This decline was caused by the suspension of loadings at the Caspian Pipeline Consortium’s (CPC) Black Sea terminal—through which over 80% of Kazakhstan’s oil exports flow—following drone attacks on oil tankers at the facility.