oilman

from WordNet (r) 3.0 (2006)

oilman
    n 1: a person who owns or operates oil wells
    2: a worker who produces or sells petroleum

from The Collaborative International Dictionary of English v.0.48

Oilman \Oil"man\, n.; pl. {Oilmen}.
   1. One who deals in oils; formerly, one who dealt in oils and
      pickles.
      [1913 Webster]

   2. A person working in the petroleum industry, esp. an oil
      company executive.
      [PJC]