Oil well firm starting 'colleges' for training By: CNBC.com News April 04, 2014 at 09:28 AM EDT Facing a constant shortage of workers, a Houston company launched a $50 million a year training program. The payoff has been worth the investment. Read More >> Related Stocks: Natl Oilwell Varco Navistar International Corp United Parcel Service iPath Dow Jones-Goldman Sachs Crude Oil Fund