According to Zacks, "Carrizo Oil & Gas, Inc. is a Houston-based energy company actively engaged in the exploration, development, exploitation and production of oil and natural gas primarily in proven trends in the Barnett Shale area in North Texas and along the Texas and Louisiana onshore Gulf Coast regions. Carrizo controls significant prospective acreage blocks and utilizes advanced three-D seismic techniques to identify potential oil and gas reserves and drilling opportunities.