Eagle Ford companies dot a list of the Natural Gas Supply Association's (NGSA) top 40 natural gas producers in the U.S. 18 of the top 40 gas producers in the U.S. also have an interest in the Eagle Ford Shale.

In total, the 18 Eagle Ford operators on the list produce more than 19 Bcf per day net to the companies. Assuming a 20% uplift for royalty and fuel loss, gross volumes easily top 24 Bcf per day. That's 32% of the 69 Bcf per day produced in the onshore Lower 48 states as of June (Source: EIA).

Companies with Eagle Ford Shale interest are in bold.

U.S. Natural Gas Production by Company for First Half of 2011

Company / Production in mmcfd

• ExxonMobil (with XTO) / 3,873
• Chesapeake Energy / 2,639
• Anadarko / 2,369
• Devon Energy / 1,997
• BP / 1,869
• Encana / 1,833
• ConocoPhillips / 1,621
• Southwestern Energy Co. / 1,312
• Chevron / 1,284
• Williams Energy ** / 1,179
• EOG Resources / 1,124
• Royal Dutch Shell plc / 953
• Apache / 869
• Petrohawk Energy Corporation / 792
• Occidental / 748
• QEP Resources / 641
• El Paso Energy / 629
• Ultra Petroleum / 614
• Newfield Exploration / 510
• EQT Resources / 464

• Exco Resources / 442
• Cabot Oil & Gas / 439
• Noble Energy, Inc. / 380
• Range Resources / 346
• Marathon / 341
• Pioneer Natural / 331
• Cimarex Energy / 326
• Plains Exploration & Production Co. / 285
• Quicksilver Resources / 253
• SM Energy Company / 252
• Forest Oil / 248
• Energen Resources Corp. / 194
• SandRidge Energy / 191
• Linn Energy / 164
• W&T Offshore, Inc. / 138
• McMoRan Exploration / 129
• MDU Resources / 127
• Unit Corporation / 117
•  Stone Energy / 112
• Hess Corporation / 103

**Provides combined quarterly natural gas and oil production data only.

Please comment below if we've missed anyone.

R.T.