| Symbol | Name | Country | Exchange |
|---|---|---|---|
| CGGYY | CGG | US | OTC |
| CGPVF | CGG | US | OTC |
| CHOLF | China Oilfield Svcs | US | OTC |
| TXLZF | Tesla Expl Ltd | US | OTC |
| 526397 | Alphageo (India) Limited | IN | BSE |
| 2883 | China Oilfield Services Ltd | HK | HK |
| 601808 | China Oilfield Services Ltd Class A | CN | SHG |