OTHER AREAS OF INTEREST

   
   
 
   
     
Pinnacle Gas
Resources. Inc.
     
Barnett Shale Trend
     
U.K. North Sea Region
   
     
Carrizo contributed the majority of its interests in the Powder River Basin into Pinnacle Gas Resources, Inc. (PGR) in June 2003 for an approximate 26.9 percent equity interest in the new entity at year- end 2003. PGR drilled 124 gross wells in the second half of 2003 making it one of the basin's most active developers. Current plans call for completion of production facilities and dewatering operations in addition to another active drilling program in 2004.

PGR holds an undivided interest in approximately 90,000 net acres of leasehold, placing it among the top ten companies in the Basin.

Pinnacle is completely self funded and has no impact on Carrizo's drilling budget.

 

     
The Barnett Shale natural gas trend in the Forth Worth Basin in North Texas has become a prolific source of predictable, low risk natural gas reserves and now ranks as the largest producing natural gas field in Texas. Typical vertical wells average between 0.5 and 1.0 Bcf of gross reserves. During the second half of 2003, the Company acquired the rights to approximately 4,100 net mineral acres in the Barnett Shale trend. At year-end 2003, Carrizo owned an interest in 6 wells and was participating in an active development program on its acreage. During 2004, the Company plans to continue to develop the acreage it has already acquired and to expand its leasing efforts in the play.
     
In the United Kingdom's 21st Round of Licensing, we have been awarded seven acreage blocks totaling over 209,000 acres. The blocks are located within the mature producing areas of the Central and Southern North Sea and consist of one ''Traditional'' and three ''Promote" licenses. The U.K. North Sea is a natural extension to our business plan, technical analyses, and portfolio management. Our blocks are in the proven hydrocarbon trends with established infrastructure, available 3-D seismic data5ets and significant exploration potential. We plan to promote our interests to other parties experienced in drilling and operating in this region.