HOUSTON, May 16, 2011 /PRNewswire/ -- Indigo II Louisiana Operating LLC ("Indigo") today announced a new horizontal well permit targeting the Louisiana Eagle Ford Shale ("LA Eagle Ford") formation.  Indigo's proposed Bentley Lumber 23H #1, Section 23, T5N-R5W, Rapides Parish, Louisiana, is permitted to a proposed total measured depth of 15,500' and is projected to include a 4,000' horizontal lateral section targeting the LA Eagle Ford zone at approximately 10,600' true vertical depth.  It is anticipated that the well will be completed through the horizontal segment with 15 fracture stimulation stages.  This new horizontal well will be located eight miles north of Indigo's recent vertical LA Eagle Ford "test" well, the Bentley Lumber 32 #1, T4N-R5W, Vernon Parish, Louisiana, drilled and completed earlier this year.  Full conventional cores were taken through the LA Eagle Ford section in the Bentley Lumber 32 #1, a suite of modern logs was run and the objective section was subsequently tested by two fracture stimulation stages in this wellbore.  The vertical well, which reached a total depth of 12,020', established LA Eagle Ford oil production (42.2 API gravity) in the center of Indigo's acreage position. 

Bill Pritchard, Indigo's Chairman and CEO stated:  "Indigo began its pursuit of this new oil shale play back in mid-2008 and has accumulated over 240,000 net acres of leasehold and mineral fee in central Louisiana that is prospective from the Louisiana Eagle Ford Shale formation. This horizontal oil shale play will involve considerable time and capital to fully develop, and it is Indigo's intent to eventually secure a joint venture partner in order to establish oil production over the entirety of its leasehold."

Indigo's new horizontal permit targeting the LA Eagle Ford follows a recent announcement by Devon Energy Inc. that it had accumulated approximately 250,000 net acres to target the same stratigraphic interval that Indigo is pursuing.  The high resistivity section at the base of the LA Eagle Ford is also known as the Tuscaloosa Marine Shale ("TMS").  Devon refers to the interval as follows:  "This [the TMS] is a Cretaceous age formation that is stratigraphically equivalent to the Eagle Ford Shale. It is approximately 200 to 400 feet thick, at depths of 11,000 to 14,000 feet across [Devon's] acreage position."

Devon plans two horizontal wells to test the target interval this year, the first of which is projected to include a 5,280' horizontal lateral section resulting in a total measured depth of over 20,000'.  The well is planned to ultimately involve up to 15 fracture stimulation stages according to statements made by Devon.  Another player in this new trend is Denbury Resources Inc. which recently announced that it has secured a joint venture partner and that the JV plans to horizontally drill for the same oil shale target.


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This is what they said just yesterday about TMS:


Indigo will horizontally drill the TMS at the Bentley Lumber 23H-1, in 23-5n-5w, Rapides Parish, La. The well is permitted to 15,500 ft measured depth including a 4,000-ft lateral at 10,600 ft true vertical depth. The company plans 15 frac stages in the TMS.


The planned wellsite is 8 miles north of the vertical Bentley Lumber 32-1, in 4n-5w, Vernon Parish, which Indigo drilled and completed earlier this year. The company took full conventional cores through the TMS section, ran a suite of modern logs, and tested the objective section with two frac stages.


The 32-1 well went to 12,020 ft TD and established production of 42.2° gravity oil from the TMS in the center of Indigo’s acreage position.




So, are we gonna call it Eagle Ford Shale or Tuscaloosa Marine Shale?  Is there a difference?

I had heard early on that the TMS was an extension of the Eagle Ford and posted the same in another thread. I think it was Jay that came back and said that there was a small difference in age and that the formation was a bit different.
Thanks for clearing that up.  It just seemed sort of odd considering that both articles reference the same well.
Thanks Jay.
What is the best way to locate the above mentioned wells? I am no geologist, or land man, lust a land owner. Have property in NW Rapides. Also I assume "15 fracture stimulation stages" is like a octopus.

The well location is at Flatwoods where the Lena Flatwood Rd turns off of Hwy 8.

you can get a township, range, section map through the department of transportation and development, office of planning and programming in baton rouge

A good on-line map showing S-T-R can be found at:






Does anyone have a map showing where Eagle Ford Shale is in Louisiana?



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