From the article: A good trade to consider: welding. I recently visited Pioneer Pipe in the Utica and Marcellus shale area of Ohio and learned that last year the company paid 60 of its welders more than $150,000 and two of its welders over $200,000. The owner, Dave Archer, said he has had to turn down orders because he can't find enough skilled welders.
So in reality what you have are some welders putting in long hours in the oil fields and probably working 70 to 80 hours a week so they are getting paid lots of overtime. In the real world, that doesn't sound so good. It's no wonder Pioneer Pipe can't find people to fill positions.
If you are good, you will be assigned all the work. If you are real good, you will get out of it.