Carrizo Oil & Gas, Inc. was founded in 1993 and is based in Houston, Texas.Carrizo Oil & Gas sees its future in 3-D. Carrizo Oil & Gas, Inc. is an independent exploration and production company that explores for oil and gas in the Barrett Shale play of North Texas, and in proven onshore fields along the Gulf Coast of Texas and Louisiana, Carrizo aggressively acquires 3-D seismic data and arranges land lease options in conjunction with conducting seismic surveys. As part of a new strategy, Carrizo Oil & Gas, Inc. is exploiting the Marcellus Shale play (New York, Pennsylvania, West Virginia and Virginia). Carrizo has additional properties in the Rockies, Alabama, Arkansas, Kentucky, New Mexico, and in the North Sea. In 2008 the firm reported proved reserves of 432.1 billion cu. ft. of natural gas equivalent.