Gas Foam Test Stand (IMAGE) Southwest Research Institute Caption Southwest Research Institute has completed a pilot-scale facility to create and test natural gas foam as a safe and stable alternative to water for hydraulic fracturing, commonly known as "fracking." Credit SwRI Usage Restrictions Images/videos may be used by the media and the public for educational and informational purposes only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.