Companies covered: BP p.l.c. (NYSE:BP), Exxon Mobil Corporation (NYSE:XOM), Total SE (NYSE:TOT), Royal Dutch Shell PLC (NYSE:RDS/A), Chevron Corporation (NYSE:CVX), Diamondback Energy, Inc. (NASDAQ:FANG), Occidental Petroleum Corporation (NYSE:OXY), ConocoPhillips (NYSE:COP), Schlumberger N.V. (NYSE:SLB), Halliburton Company (NYSE:HAL), Baker Hughes (NYSE:BKR), Bristow Group Inc. (NYSE:VTOL), Helix Energy Solutions Group, Inc. (NYSE:HLX), Chart Industries, Inc. (NASDAQ:GTLS), TechnipFMC plc (NYSE:FTI), National Energy Services Reunited Corp. (NASDAQ:NESR), ChampionX Corp. (NASDAQ:CHX), Exterran Corp. (NYSE:EXTN), Transocean Ltd. (NYSE:RIG), Diamond Offshore Drilling, Inc. (OTCMKTS:DOFSQ), Noble Holding Corporation PLC (OTCMKTS:NEBLQ), Valaris PLC (OTCMKTS:VALPQ), Pioneer Natural Resources Company (NYSE:PXD), Hess Corporation (NYSE:HES), Apache Corporation (NASDAQ:APA), SilverBow Resources Inc. (NYSE:SBOW), QEP Resources, Inc. (NYSE:QEP), Ring Energy, Inc. (NYSEAMERICAN:REI), EOG Resources, Inc. (NYSE:EOG), Devon Energy Corporation (NYSE:DVN), Evolution Petroleum Corporation, Inc. (NYSEAMERICAN:EPM), Obsidian Energy Ltd. (OTCMKTS:OBELF), W&T Offshore, Inc. (NYSE:WTI), Vaalco Energy Inc (NYSE:EGY)