Atascosa Eagle Ford Shale Heating Up
The drilling activity in Atascosa County has picked up considerably since the first of 2012. There are several oil and gas companies drilling the Eagle Ford shale in Atascosa county at present. They include Marathon oil, EOG Resources, Carrizo Oil and Gas Incorporated, Murphy Exploration and Production, Comstock Oil and Gas, Cabot Oil and Gas, Cinco Natural Resources Corporation, Pioneer Natural Resources, XTO Energy Incorporated, Hilcorp Energy, El Paso E&P Inc, and Chesapeake. Just about all of the major Eagle Ford Shale players are represented in Atascosa County. The number of new drilling permits issued by the Texas Railroad Commission for the Eagle Ford Shale in Atascosa County since January 1, 2011 stands at around 50. Much of the horizontal drilling activity is taking place in the lower southern half of the county. Below is a map from the Texas Railroad commission showing new oil and gas wells. (The pentagon shape indicates the surface location of the well and the colored circle at the end of the line represents the bottom hole location. Note the intense activity in the southeastern part of the county just east of Whitsett on the Karnes county and Live Oak county lines. Below is a photo of a new EOG Resources oil well in Atascosa County, just inside the Karnes County line. In the background you can see a drilling rig completing another new well.
(Click on images to view in original size).
Below is a map from the Energy Information Administration showing Atascosa County’s location in the Eagle Ford Shale play. More than half of the county is located in the oil window. Notice that the lower southeastern portion of Atascosa County lies in the “volatile oil – condensate window”, of Eagle Ford Shale. This is the area that is seeing the most intense drilling activity as oil and gas companies go after the highly valuable natural gas liquids and oil found in that part of the play. This is where the “investor presentation wells”, with initial production figures of up to two thousand barrels a month or more, are being drilled. Companies such as EOG Resources will drill as many of these wells as they possibly can before having to go drill wells to hold leases in the more oily section of the Eagle Ford Shale in Atascosa County. The depth of the top of the Eagle Ford Shale in Atascosa County ranges between 6000′ to over 10,000′.
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