| Topics | Upstream Production | Environment | Transport -geopolitics | Refining on/offshore | Downstream | |||
| Pricing | Conservation | ships & pipelines | vertical integration | Pricing | ||||
| Multinational oil companies | ||||||||
| Exxon/Mobil | ||||||||
| Royal Dutch Shell | ||||||||
| BP | ||||||||
| Other | ||||||||
| National Oil Companies | ||||||||
| Saudi Aramco | ||||||||
| National Iranian Oil Company (NIOC) | ||||||||
| Sonatrach (Algeria) | ||||||||
| Kuwait Oil Company (KOC) | ||||||||
| Abu Dhabi National Oil Cpany (ADNOC) | ||||||||
| Qatar Petroleum | ||||||||
| Permex | ||||||||
| PDVSA | ||||||||
| Petrobras | ||||||||
| Sinopec | ||||||||
| National Nigerian Petroleum Corporation (NNPC) | ||||||||
| Other | ||||||||
| US policy makers | ||||||||
| Other consumer countries | ||||||||
| UK | ||||||||
| Japan | ||||||||
| France | ||||||||
| Germany | ||||||||
| India | ||||||||
| China | ||||||||