EIA Updates Eagle Ford Maps

New maps detail play’s GORs, footprint, thickness, elevation

The U.S. Energy Information Administration (EIA) has released new maps that include updated information for Eagle Ford derived from producing wells from January 2000- June 2014 based on The maps are categorized in the following geological parameters.

Initial GOR

This map shows the detailed production in relation to the natural gas to oil ratio (GOR) of the play.

Oil to gas ration map for Eagle Ford 2015

Source: U.S. Energy Information Administration and Drillinginfo Inc., September 2014


Play Footprint

This map shows the four boundaries of the Eagle Ford Play

  1. North – This boundary is determined by the temperatures at which oil is generated from rock and stops at 3650 feet in Frio County and counties east, and in Maverick and Zavala counties from 650 to 2900 feet.
  2. South – This boundary follows the Sligo Reef Margin.
  3. Northeast – This boundary where the lower Eagle Ford thins and grades into more silica-rich units of the Pepper Shale of the East Texas Basin
  4. West – This boundary is marked by the border with Mexico
EFS boundaries map: 2015

Source: U.S. Energy Information Administration and Drillinginfo Inc., September 2014

Elevation Contours

This structure map characterizes the depth of the play and represents the minimum drilling depth to reach the top of the Eagle Ford formation.

“The Eagle Ford formation is divided into upper and lower units, and the top of the lower unit is considered the best proxy for the source rock; however, due to a lack of density and distribution of the depth to the top of the lower Eagle Ford formation, this map represents an approximation of the elevation of the top of the upper Eagle Ford unit.” 
Eagle Ford elevation map 2015

Source: U.S. Energy Information Administration and Drillinginfo Inc., September 2014

Thickness Contours

This map provide a rough estimate of the thickness of the play, which is used to estimate resource volumes, such as oil- or gas-in-place estimates, in combination with other information such as porosity, pressure, and geologic history.

Eagle Ford thickness map

Source: U.S. Energy Information Administration and Drillinginfo Inc., September 2014












Read here for more about Eagle Ford Shale Geology

Purchase EFS maps here

Read full report at eia.gov

The Importance of Radio Communications Onsite & Wide-Area in the Eagle Ford – Press Release

Effective Communication Is Key in the Oilfield

Many energy related companies rely heavily on radio communications for coordination of personnel and assets on a site, across a region or both. They choose radio for many reasons: [Read more…]

How Deep Is the Eagle Ford?

The Biggest Wells Are Found at Depths Between 8,000 and 12,000 feet

The Eagle Ford has been drilled at depths that range from a few thousand to 14,000+ ft in South Texas.

How Deep is the Eagle Ford Formation Found?

The fairway of the play is found at approximate depths of 8,000-12,000 ft below the surface. [Read more…]

Eagle Ford Shale Well Map – TX RRC – May 2013

Just Under 5,000 Producing Wells & 5,000+ Eagle Ford Permits To Date
Eagle Ford Shale Well Map

Eagle Ford Shale Well Map – May 2013 | Click to Enlarge

An updated Eagle Ford well map was published by the RRC in mid-May.

Over a 98 day period between February and May, an average of almost 8 oil wells and almost 5 gas wells came online per day. It is obvious higher gas prices have been welcomed during the first half of the year.

The number of gas wells online has grown by almost 50% in just over three months.

Between February and May:

  • 768 oil wells came online – 3,462 producing
  • 448 gas wells came online – 1,443 producing
  • 5,497 permits had been approved and were pending development
  • More than 10,402 well permits have been drilled or are pending. Permits expire after two years, so many more have have been permitted over the past five years.

Data from the RRC is always a little delayed, so the numbers reflected are not be 100% accurate. The RRC is at the mercy of companies reporting data in a timely fashion. I suspect we have well over 5,000 producing Eagle Ford wells today.

Eagle Ford Oil Production Up 70% in January 2013

Normal Revisions Place Oil Production Above 420,000 b/d

EagleFordMaps-300x250-CInitial reports for Eagle Ford production from the Texas RRC show the play produced more than 370,000 b/d of oil in January. [Read more…]

New Eagle Ford Well Map from the TX RRC – July 2012

Eagle Ford on schedule to surpass 3,000 producing wells in August or early September
Eagle Ford Shale Well Map - July 2012

Eagle Ford Shale Well Map | Click to Enlarge

The Texas RRC updated its Eagle Ford Shale well map with the most recent reported data through July 3, 2012.

Since May 14 when the RRC last updated the data points on its map, the commission has issued 367 permits. That’s more than 7 permits per day over a period of 50 days.

A total of 2,400 wells had been reported producing as of July 3. That’s 314 more oil wells and 107 more gas wells than we had as of May 14. If you’re counting, that’s a pace of more than 8 wells coming online per day.

Data from the RRC is always a little delayed, so we’re likely on pace to surpass 3,000 producing wells by the end of August or early September.