Somewhere in the expanses of the hot desert you discovered oil and immediately erected a tower to extract the valuable resource in the OIL RIG Driller. Develop a profitable business and first you need to pack the extracted oil into barrels and sell it. The trucks were already lined up waiting. But crude oil itself is cheap; it is much more profitable to sell its refined products: gasoline, kerosene, diesel, fuel oil, and so on. It is necessary to develop and build an oil refinery so that the business brings significant income to OIL RIG Driller.
