| 1 | | 111 Hengyuan Road Linyi County | Dezhou |  CN | | Oil & Gas | 86-534-4233-715 |
| 2 | | 3 Allen Center 333 Clay Street Suite 4620 | Houston |  US | | Oil & Gas | 1-713-652-0582 |
| 3 | | 1333 8th Street Southwest Suite 800 | Calgary |  CA | | Oil & Gas | 1-403-263-1623 |
| 4 | | 26/1, Sofiyskaya Embankment | Moscow |  RU | | Oil & Gas | 7-499-517-88-99 |
| 5 | | Carel van Bylandtlaan 30 | The Hague |  NL | | Oil & Gas | 31-70-377-9111 |
| 6 | | Sveavagen 155 PO Box 23 900 | Stockholm |  SE | | Oil & Gas | 46-8-506-80-000 |
| 7 | | 550 Burrard Street Suite 328 | Vancouver | CA | | Oil & Gas | 1-604-630-0300 |
| 8 | | Mukhina 22 Region | Khabarovsk | RU | | Oil & Gas | 7-4212-79-38-12 |
| 9 | | 4 Afribank Street Victoria Island | Lagos |  NG | | Oil & Gas | 234-1-262-1781 |
| 10 | | Av Republica do Chile 65 Centro | Rio De Janeiro |  BR | | Oil & Gas | 55-21-3224-2040 |
| 11 | | Moskovsky Street 130 GKP | Yaroslavl | RU | | Oil & Gas | 7-485-149-8100 |
| 12 | | 2780 Waterfront Parkway E Drive Suite 200 | Indianapolis | US | | Oil & Gas | 1-317-328-5660 |
| 13 | | 11, Sretensky Boulevard | Moscow | RU | | Oil & Gas | 7-495-627-4444 |
| 14 | | Jalan Medan Merdeka Timur 1A | Jakarta |  ID | | Oil & Gas | 62-1-500-000 |
| 15 | | 595 Howe Street Suite 303 | Vancouver | CA | | Oil & Gas | 1-604-718-2800 |
| 16 | | 333 Clay Street Suite 1600 | Houston | US | | Oil & Gas | 1-713-646-4160 |
| 17 | | Ulica Chemikow 7 | Plock |  PL | | Oil & Gas | 48-24-365-0000 |
| 18 | | Praia Do Flamengo 66 - 14 Andar Parte | Rio De Janeiro | BR | | Oil & Gas | 55-21-2555-5500 |
| 19 | | 370 ₣ 1/64 5/16 17th Street Suite 1700 | Denver | US | | Oil & Gas | 1-403-645-2000 |
| 20 | | 370 ₣ 1/64 5/16 17th Street Suite 1700 | Denver | US | | Oil & Gas | 1-403-645-2000 |
