oilmen

/OY1 L M EH1 N/
noun
  1. 1

    Somebody involved in the production, refinement or delivery of oil; such as an oil field worker or executive, or the owner of an oil well.

  2. 2

    A retailer who sells vegetable oils, and food preserved in oil

Source: https://en.wiktionary.org/wiki/oilman, https://en.wiktionary.org/wiki/oilmen