High-quality: WTI Is considered a "light-weight sweet" crude oil, which can be much easier to refine, though Brent is actually a mixture of crude oils, like both "gentle sweet" and "heavy bitter" grades. The full number of active drilling rigs for oil and fuel in the United States came crashing https://maps.app.goo.gl/VhAGTRCDGTuVhHJa8