The Eagle Ford Shale geological formation in south Texas has been a boom to oil and gas producers in the area. Literally a “boom town” scenario for many of the small towns in the region. The Arrow S Ranch lies in the Eagle Ford area and is owned by Daniel Harrsion. Harrison in 2010 leased his 100,000-acre ranch in the Eagle Ford Shale in South Texas to Shell Oil Co. for $1 billion in cash, plus royalties for future oil and gas production.
You can read more about Harrison in this Houston Chronicle article.