Exploration Drilling Success Rate 2006-7

All Financial Data in US Dollars.
Oil & Gas Operational
 Key Operating Data
  Key Operating Ratios
     Exploration Drillling Success Rate - World (%) Data Growth
  2006 2007 2007
       Helix Energy Solutions Group 76% 91%   +20%  
       PDC Energy, Inc. - 4%   -  
       Unit Corp 52% 68%   +32%