The Haynesville Shale
The Haynesville Shale is a rock formation mainly composed of consolidated clay-sized particles deposited and buried in northwest Louisiana and East Texas. It’s characterized by ultra-low permeability but has a high porosity compared to other shales.
Most geological basins outside of Louisiana have productive wells at depth ranges about 8,500 feet. The Haynesville Shale however involves drilling below 10,000 feet and up to 13,000 feet deep. The formations get deeper as the field dips towards the Gulf of Mexico. The Haynesville Shale has recently been estimated to be the largest natural gas field in the 48 states with an estimated 250 trillion cubic feet of recoverable gas. Production has boomed since late March of 2008.