The conclusion: the worldwide oil and gas industry, including oilfield services companies, parts manufacturers and steel pipe makers, has laid off at least 75,000 so far.
Considering that about 600,000 work in the U.S. oil and gas sector, this is a big hit. http://www.forbes.com/sites/christopherhelman/2015/03/16/oil-layoffs-itemized-75000-and-counting/