Fracking well heads (C016/8130) Crewneck Sweatshirt

Fracking well heads. Well heads hooked up in preparation for a hydraulic fracturing operation at a drill pad. Fracking or hydraulic fracturing is a drilling technique used to extract gas from shale deposits. A mixture of sand, chemicals and water is pumped under high pressure from the surface to underground horizontal wells. The pressure forms fissures (fractures) in the shale. The sand keeps the fissures open, allowing gas to flow into the well and rise to the surface. This is part of exploratory drilling being carried out to assess the potential of the Fayetteville Shale in Arkansas, USA.