Carrizo Oil & Gas, Inc. To Make Presentation at the Independent Petroleum Association of America (‘IPAA’) Oil and Gas Investment Symposium in San Francisco.

HOUSTON, Oct. 2 /PRNewswire-FirstCall/ — Carrizo Oil & Gas, Inc. announced today that the Company’s Chief Executive Officer, S. P. “Chip” Johnson, will make a presentation at the Independent Petroleum Association of America’s 2008 Oil and Gas Investment Symposium in San Francisco on Wednesday, October 8, 2008. A webcast of the presentation can be accessed on the company’s website, http://www.crzo.net/ by clicking on “Links” and then on “IPAA OGIS 2008 Presentation”. The presentation will be webcast live beginning at 9:15 AM Pacific Time on Wednesday, October 8, 2008.

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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 onshore Texas and Louisiana Gulf Coast regions. The Company is also engaged in exploration and development activities in the U.K. North Sea. Carrizo controls significant prospective acreage blocks and utilizes advanced 3-D seismic techniques to identify potential oil and gas reserves and drilling opportunities.

    Contact:  Carrizo Oil & Gas, Inc.              Richard Hunter, Vice President of Investor Relations              B. Allen Connell, Consultant              Paul F. Boling, Chief Financial Officer              (713) 328-1000  

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Carrizo Oil & Gas, Inc.

CONTACT: Richard Hunter, Vice President of Investor Relations, or B.Allen Connell, Consultant, or Paul F. Boling, Chief Financial Officer,+1-713-328-1000, all of Carrizo Oil & Gas, Inc.