In order for you to play Oil Enterprise on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
OSX 10.8 or newer
Processor (CPU):
Intel Core i5-3210M (2 * 2500 MHz) or higher
Memory (RAM):
4 GB RAM
Graphics Card:
Intel HD Graphics 4000, GeForce GT 650M (512MB) or better
Storage:
900 MB available space