| Answer | Crossword Clue |
|---|---|
| ETHANE | By-product of oil refining |
| raffinate | the refined fraction which results after removal of impurities by solvent extraction, spec. in oil refining |
| raffinates | RAFFINATE, the refined fraction which results after removal of impurities by solvent extraction, spec. in oil refining |
| upstream | At a stage in the process of gas or oil extraction and production before the raw material is ready for refining |
| downstream | At a stage in the process of gas or oil extraction and production after the raw material is ready for refining |
| CRUDE | Oil, before refining |
| ABADAN | Mideast oil-refining center |
| ARUBA | Isle famed for oil refining |
