Let's see the numbers of rigs in operation before the "Boom".
Your linked article shows 899 rigs in operation in Oct. 2014 and this posted
article says the rig count is down to 766 this week.
Rig count Oct 2014:
http://texasalliance.org/wp-content/uploads/2014/12/85-12-Dec-2014-NewsLine-Petro-Index-FULL-pg-for-website1.pdf
Texas alone could lose more than 40,000 upstream oil and gas jobs as drilling activity turns sluggish, said Karr Ingham, the economist who compiles the monthly Texas Petro Index that tracks the industry’s economic indicators. All told, he said, this oil bust might cost Texas 200,000 jobs across all industries.