Other mineral exports included petroleum refinery products and alumina.

Although crude oils generally do not contain olefins, they are formed in many of the processes used in a petroleum refinery.

As of 2002, there were 130 petroleum refineries worldwide producing 172,000 tons per day of petroleum coke.

This crucial conversion process enables petroleum refineries to obtain gasoline, aviation fuel, and olefinic gases through the conversion of hydrocarbon fractions at high temperatures.

Petroleum refineries are being built in the area.

The years leading up to the 2008 financial crisis saw 'peak oil' theorists loudly claiming that we were fast approaching the end of the earth's reachable petroleum reserves.

The countrys proven petroleum reserves were estimated to be about.

Petroleum reserves are typically a vast distance from consumption but can be transferred at ambient temperatures.

The results show that the net price and transaction value methods overvalue the resource rent of petroleum reserves.

Sudden discoveries of large petroleum reserves created numerous boomtowns whose populations often multiplied tremendously in short periods.