Imperial Initiates Coverage Of Oil & Oilfield Services Companies By: Benzinga via Benzinga August 18, 2017 at 10:51 AM EDT With energy prices range bound and constrained by the $50-a-barrel upper resistance, oil and oil services companies aren't having ... Read More >> Related Stocks: Approach Res. Inc Centennial Resource Development Inc Mammoth Energy Services Inc Pdc Energy Inc Solaris Oilfield Infrastructure Inc Cl A