A fracking site operated by Exxon in New Mexico. Crude output in the US, the world's largest producer of oil and gas will average 11.7m bpd in 2020. Reuters
A fracking site operated by Exxon in New Mexico. Crude output in the US, the world's largest producer of oil and gas will average 11.7m bpd in 2020. Reuters

The worst for the oil markets may be behind us: here's why