Exploration
Services and construction
| Country | Company |
| Japan | Chiyoda |
Development and operator
| Japan | United Petroleum Development Co Ltd (100% owner Bunduq) |
Service provider, data, research
| Function | Entity |
| Law | Thomson Reuters |
| Oil/Gas statistics | JODI |
| Inflation energy | www.InflationData.com |
| Oil/Gas prices | US Energy Information Administration |
| Research | Deloitte Mckinsey Chatham House |
State oil companies