From oil services giants such as Halliburton (NYSE:HAL) and Schlumberger (NYSE:SLB) to smaller...

From oil services giants such as Halliburton (NYSE:HAL) and Schlumberger (NYSE:SLB) to smaller firms, companies are exploring ways to reuse water employed in the fracking process of coaxing oil and gas out of shale-rock formations, potentially saving the industry billions of dollars. At fracking sites today, companies must haul water hundreds of miles to the nearest injection wells.