Carrizo Oil & Gas, Inc. Announces Conference Call for the Third Quarter 2011 Financial Results

HOUSTON, TX -- (MARKET WIRE) -- 10/18/2011 -- Carrizo Oil & Gas, Inc. (NASDAQ: CRZO) will hold a conference call to discuss 2011 third quarter financial results on Tuesday, November 8, 2011 at 10:00 AM Central Standard Time. Carrizo plans to issue an earnings press release prior to the market opening on Tuesday, November 8, 2011.

Date & Time:

Tuesday, November 8 at 10:00 AM CST

Dial-In Number:

(800) 683 - 0779 (U.S. & Canada)

+1 (303) 223 - 2680 (Intl./Local)

Telephone Replay Number:

(800) 633 - 8284 (U.S. & Canada)

+1 (402) 977 - 9140 (Intl./Local)

Enter Replay Reservation #: 21542966 for U.S., Canadian and International callers.

The replay will be available through Friday, November 18, 2011 at 11:59 AM CST.

A simultaneous webcast of the call may be accessed over the internet at http://www.investorcalendar.com/IC/CEPage.asp?ID=166293 or by visiting our website at http://www.crzo.net clicking on "Investor Relations" and then clicking on "2011 Third Quarter Conference Call Webcast." To listen, please go to either website in time to register and install any necessary software. The webcast will be archived for replay on the Carrizo website for 15 days.

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 the Eagle Ford Shale in South Texas, the Barnett Shale in North Texas, the Marcellus Shale in Appalachia, the Niobrara Formation in Colorado, and in proven onshore trends along the Texas and Louisiana Gulf Coast regions. Carrizo is also actively developing its oil discovery known as the Huntington Field in the UK North Sea. Carrizo controls significant prospective acreage blocks and utilizes advanced drilling and completion technology along with sophisticated 3-D seismic techniques to identify potential oil and gas drilling opportunities and to optimize reserve recovery.

Contact:Carrizo Oil & Gas, Inc.Richard HunterVice President of Investor RelationsPaul F. BolingChief Financial Officer(713) 328-1000