Atascosa Eagle Ford Shale Heating Up

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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.

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 Eagle Ford Shale Atascosa County map of drilling activity    EOG well  in Atascosa County Texas in Eagle Ford Shale

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′.

 map showing the  Eagle Ford Shale in Atascosa County

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