Eagle Ford

Eagle Ford Shale Description ImageThe Eagle Ford shale formation in South Texas runs from the US-Mexico border north of Laredo in a narrow band extending northeast for several hundred miles to just north of Houston. It is located directly below the Austin Chalk. The average thickness of the Eagle Ford shale is about 475 feet. The more active part of the region is mainly in McMullen, Maverick, Dimmit, La Salle, Karnes, Live Oak, and Atascosa counties. The formation produces both natural gas and oil, but it is the oil-producing and gas condensate areas that are hottest right now.

Houston-based Apache Corp. and EOG Resources are two of the largest lease-holders in the Eagle Ford. Other major players include Petrohawk, Swift Energy, ExxonMobil, ConocoPhillips, Murphy Oil, Chesapeake, Cabot Oil & Gas, and Pioneer Natural Resources.

Eagle Ford Shale Map

Eagle Ford Shale News


Jul 6, 1992 James H. Skelton Independent Geologist Houston The successful drilling and completion of the world's deepest horizontal well in Louisiana confirms seismic indications that the brittle Upper Cretaceous Austin chalk has been highly fractured by nearby halokinetics (salt movement). Cliffs Oil & Gas Co., Houston, 1-A Roy Martin in Avoyelles Parish flowed 2,566 b/d of oil from the chalk at a true vertical depth of 15,339 ft. Previous studies of fractured formations have identified two types of

New method of aerial and surface radiometric prospecting for oil, gas

Sep 20, 1993 Mean Natural Radioelement Content of Sedimentary Rocks [34,614 bytes] A new petroleum exploration method has been developed using surface and aerial gamma-ray spectral measurements. Formerly troublesome lithologic and environmental variables are suppressed by correcting potassium and uranium readings using a process of thorium normalization.

More operators eye Maverick shale gas, tar sand potential

Aug 13, 2007 Gas potential in the overpressured Cretaceous Pearsall shale has drawn two of the world’s largest oil and gas companies to South Texas and the Maverick basin, a province almost exclusively tended by smaller independents for the past few decades.

Eagle Ford viewed among top US shale gas plays

May 4, 2009 Formation characteristics from two of its first five wells indicate that the Cretaceous Eagle Ford shale in LaSalle and McMullen counties of South Texas “is one of the highest quality shale reservoirs discovered in the US,” said Petrohawk Energy Corp., Houston.

OGJ Newsletter

Jun 15, 2009

EnCana banking heavily on unconventional gas, oil

Jun 15, 2009 Unconventional gas and oil plays represent the future for EnCana Corp. and the North American oil and gas industry, EnCana said May 27.

St. Mary Land tests Eagle Ford in Webb County

Jul 6, 2009 St. Mary Land & Exploration Co., Denver, completed its first operated horizontal Cretaceous Eagle Ford shale well in South Texas, where it is running two rigs in the play.

OGJ Newsletter

Aug 17, 2009

OGJ Newsletter

Sep 21, 2009

Special Report: Understanding process key to shale gas development

Sep 28, 2009 Making hydrocarbon production from shales a profitable venture requires a process for driving down overall costs.

Repsol YPF confirms large gas find off Venezuela

Sep 28, 2009 Repsol YPF SA confirmed earlier reports that it has made a giant natural gas discovery off Venezuela.

New plays emerge, although environmental issues arise

Oct 19, 2009 New shale plays continue to emerge in North America and elsewhere, but issues related to the environment and land will affect commercial shale development.

Special Report: Construction survey shows delay in completion dates

Nov 16, 2009 Oil & Gas Journal's semiannual Worldwide Construction Update shows a decline in construction activity compared with the previous edition of the update (OGJ, Apr. 6, 2009, p. 22).

Eagle Ford shale McMullen joint venture forms

Dec 7, 2009 Activity further intensifies in the South Texas play for gas with condensate to varying degrees in Cretaceous Eagle Ford shale, according to developments reported in November.

Special Report: Canada looks to shales for boost to gas supply

Dec 14, 2009 Natural gas from shale formations represents a potentially crucial source of supply growth in Canada, where production from conventional reservoirs is declining in a trend likely to continue.
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