Natural Gas Reserves 2006-7

All Financial Data in US Dollars.
Oil & Gas Operational
 Key Operating Data
  Reserves
     Total Gas Reserves (bcf) Data Growth
  2006 2007 2007
       Anadarko Petroleum Corp. 10,486 8,504   -19%  
       Apache Corporation 7,513 7,873   +5%  
       Apco Oil and Gas International Inc 82 76   -8%  
       Approach Resources Inc 99 161   +63%  
       Atlas Energy Inc 169 885   +425%  
       ATP Oil & Gas Corp. 329 356   +8%  
       Barnwell Industries Inc. 25 24   -3%  
       Berry Petroleum Corporation 226 315   +39%  
       Black Hills Corp 165 173   +5%  
       Brigham Exploration Company - 107   -  
       Cabot Oil & Gas Corp. 1,368 1,560   +14%  
       Callon Petroleum 66 116   +76%  
       Carrizo Oil & Gas, Inc - 248   -  
       Chesapeake Energy Corp. 8,319 10,137   +22%  
       Chevron Corporation 22,884 22,140   -3%  
       Chevron Corporation (Hess) 22,884 22,140   -3%  
       Cimarex Energy Co. 1,090 1,123   +3%  
       Clayton Williams Energy, Inc. - 123   -  
       CNX Gas Corp - 1,343   -  
       Comstock Resources, Inc. - 838   -  
       Concho Resources Inc - 226   -  
       ConocoPhillips 26,835 25,438   -5%  
       ConocoPhillips (Hess) 26,835 25,438   -5%  
       Continental Resources, Inc. - 183   -  
       Denbury Resources Inc. 289 359   +24%  
       Devon Energy Corporation 8,259 8,994   +9%  
       Dominion Energy, Inc. 5,136 1,019   -80%  
       Dorchester Minerals LP 66 61   -7%  
       DTE Energy Company 616 219   -64%  
       El Paso Corp 2,087 2,499   +20%  
       Endeavour International Corp 25 20   -19%  
       Energen Corp - 1,116   -  
       Energy XXI Gulf Coast, Inc. - 152   -  
       EOG Resources 6,095 6,669   +9%  
       EPL Oil & Gas Inc 170 103   -39%  
       Epsilon Energy Ltd. - 38   -  
       EQT Corp - 2,670   -  
       EXCO Resources, Inc. - 1,740   -  
       ExxonMobil 67,569 68,262   +1%  
       ExxonMobil (Hess) 67,569 68,262   +1%  
       Forest Oil Corporation 778 1,552   +100%  
       Gastar Exploration Inc. 31 54   +77%  
       Goodrich Petroleum Corporation - 347   -  
       Gulfport Energy Corporation - 24   -  
       Harvest Oil & Gas Corp. - 250   -  
       Helix Energy Solutions Group 318 439   +38%  
       Hess Corporation 2,466 2,668   +8%  
       HighPoint Resources Corporation - 538   -  
       Houston Exploration Company 672 -   -  
       Kinder Morgan Energy Partners, L.P. 0 1   +270%  
       Kodiak Oil & Gas Corp. 2 3   +12%  
       Linn Energy - 1,029   -  
       Marathon Oil Corp. 3,510 3,450   -2%  
       Mariner Energy - 448   -  
       Maverick Natural Resources, LLC - 505   -  
       McMoRan Exploration Co. 41 246   +496%  
       MDU Resources Group 538 524   -3%  
       Murphy Oil Corporation 531 591   +11%  
       National Fuel Gas 233 205   -12%  
       Newfield Exploration Company 1,590 1,810   +14%  
       Noble Energy 3,231 3,307   +2%  
       Oasis Petroleum Inc. - 1   -  
       Occidental Petroleum Corporation 3,724 3,843   +3%  
       PDC Energy, Inc. - 594   -  
       Penn Virginia Corporation - 588   -  
       Petrohawk Energy Corp 930 955   +3%  
       PetroQuest Energy, Inc - 142   -  
       Pioneer Natural Resources Company 2,928 2,964   +1%  
       Plains Exploration & Production 111 1,520   n/m  
       Pogo Producing Company 1,233 -   -  
       Questar 2,082 2,284   +10%  
       Quicksilver Resources Inc 1,242 1,152   -7%  
       Range Resources Corporation - 1,833   -  
       Rosetta Resources Inc. - 400   -  
       SandRidge Energy, Inc. - 1,297   -  
       SilverBow Resources, Inc. 324 394   +22%  
       SM Energy Company 482 613   +27%  
       Southwestern Energy Co. 979 1,397   +43%  
       Stone Energy Corporation 343 213   -38%  
       Thunderbird Resources Equity Inc. - 406   -  
       TransAtlantic Petroleum Ltd. 1 -   -  
       Ultra Petroleum Corporation 2,258 2,843   +26%  
       Unit Corp 406 420   +3%  
       Vaalco Energy Inc 0 0   +259%  
       Venoco 230 215   -7%  
       Virtual E&P Sector 431,721 439,492   +2%  
       W & T Offshore - 333   -  
       Whiting Petroleum Corporation - 327   -  
       Williams Companies 3,701 4,143   +12%  
       XTO 6,944 9,441   +36%  
Reserve Restatement 2007
In 2007, Occidental completed an exchange of oil and gas interests in Horn Mountain with BP for oil and gas interests in the Permian Basin and a gas processing plant in Texas. Occidental also sold its oil and gas interests in Pakistan to BP in 2007. In 2006, Ecuador terminated Occidental’s contract for the operation of Block 15, which comprised all of its oil-producing operations in the country, and seized Occidental’s Block 15 assets. Occidental has classified its Horn Mountain, Pakistan and Ecuador operations as discontinued operations on a retrospective basis and excluded them from all tables in the Supplemental Oil and Gas Information section.

The restated figure is 3724 bcf where it was previously 3810 bcf.
Value of: 1,270% treated as not meaningful