Here are the average reservoir parameters for Barnett Shale and Eagle Ford Shale.

This post will give you ideas about the quality of each shale gas reservoir.

Some body will scream, "Oh, each shale reservoir is different!".

Of course they are. Use at your own risk.


Average Reservoir Parameters for the Barnett Shale (taken from Literature)

Parameter Unit Range
Net pay ft 100 --600
Porosity % 4--5
System permeability md 0.00007--0.005
Water Saturation % 25--43
Gas Content scf/ton 60--125
Depth ft 6500--5000
Reservoir pressure psi 3000-5000
Well Spacing acres 60--160
Vitrinite reflectance % 0.6--1.6
Total organic content (TOC) % 2.4--5.1


Average Reservoir Parameters for the Upper Eagle Ford (taken from 121 wells)

Parameter Unit Range Mean
Net pay ft 3--236 100
Porosity % 3--9 6
System permeability md 0.0001-0.0005 0.0003
Water Saturation % 12--44 23
Gas Content scf/ton 7--96 41
Depth ft 5500--14300 11700
Bulk Density g/cc 2.44--2.65 2.55
Total organic content (TOC) % 0.3--4.0 1.9


Average Reservoir Parameters for the Lower Eagle Ford (taken from 121 wells)

Parameter Unit Range Mean
Net pay ft 8--326 163
Porosity % 3--12 8
System permeability md 0.0001-0.0007 0.0004
Water Saturation % 9--44 18
Gas Content scf/ton 18--118 Mar-00
Depth ft 5800--14400 11800
Bulk Density g/cc 2.36--2.63 2.46
Total organic content (TOC) % 0.7--5.4 3.6


Source:

1. Dong, Z., Holditch, S. A., & McVay, D. A. (2012, January 1). Resource Evaluation for Shale Gas Reservoirs. Society of Petroleum Engineers. doi:10.2118/152066-MS