It looks like Apache is looking to use natural gas instead of diesel to power the pumps used for hydraulic fracking:
Apache Corp., Houston, said it has partnered with Halliburton and Schlumberger to find ways to use natural gas to power hydraulic fracturing, one of the most energy-intensive processes employed by the industry.
Only 1% of drilling rigs and zero full frac spreads are powered by gas, Apache said. In 2012, the industry will have used more than 700 million gal of diesel to pump sand and water during fracture stimulation. That’s $2.38 billion spent on diesel at a recent average of $3.40/gal.
Converting the process to using field gas would reduce fuel costs by 70%, said Mike Bahorich, Apache’s executive vice-president of technology.
“When I approached Halliburton and told them Apache wanted to do this, they told me that the reason that frac spreads that moved every week did not run on natural gas was due to the complexity of the natural gas supply and support infrastructure,” Bahorich said. “I also contacted Schlumberger. It didn’t take long for both companies to call back and tell me it could be done.”A lot more detail at the link.