| Symbol | Name | Country | Exchange |
|---|---|---|---|
| EXR | Elixir Petroleum Limited | AU | ASX |
| JPTXF | Japan Petroleum Exploration Co. Ltd | US | OTC |
| NFEI | New Frontier Energy | US | OTC |
| SKPI | Sky Petroleum Inc | US | OTC |
| TGRO | Tiger Oil and Energy Inc | US | OTC |
| NOG | Nostrum Oil & Gas Plc | UK | LSE |
| UKOG | UK Oil & Gas Investments | UK | LSE |
| 500186 | Hindustan Oil Exploration Company Limited | IN | BSE |
| OIL | OIL INDIA LTD. | IN | BSE |