Pre-filing Draft
Resource Report 6
Geological Resources
Wabash Gas Storage, LLC
Wabash Gas Storage Project
Edgar County, Illinois
FERC Docket No.
PF11-6-000
Volume I Public Information
November 15, 2011
Pre-filing Draft Resource Report 6 Geological Resources Wabash Gas Storage, LLC
T Township
TD total depth
TDS total dissolved solids
TVD true vertical depth
UIC Underground Injection Control
USEPA United States Environmental Protection Agency
USGS United States Geological Survey
W west
Wabash Wabash Gas Storage, LLC
Wabash-Midwestern Interconnect Wabash-Midwestern interconnect location at Paris
Compressor Station
XRD X-ray Diffraction
XRMI Extended Range Micro Imaging
Tetra Tech November 15, 2011 v
Pre-filing Draft Resource Report 6 Geological Resources Wabash Gas Storage, LLC
TABLE OF CONTENTS
RESOURCE REPORT 6 GEOLOGICAL RESOURCES ..........................................................1
6.1 Geologic Setting ......................................................................................................2
6.1.1 Physiography and Surficial Geology.......................................................................... 2
6.1.2 Regional Geology ...................................................................................................... 3
6.1.2.1 Key Structural Features ............................................................................. 4
6.1.2.2 Stratigraphy................................................................................................ 4
6.1.2.3 Gas Storage in the Illinois Basin ................................................................ 5
6.1.3 Project Area Geology................................................................................................. 6
6.1.3.1 Prior and Current Operations in the Elbridge and Nevins Structures ........ 6
6.1.3.2 Available Project Area Data ....................................................................... 8
6.1.4 Storage Site Geology............................................................................................... 11
6.1.4.1 Storage Reservoir .................................................................................... 11
6.1.4.2 Cap Rock ................................................................................................. 15
6.1.4.3 Abandoned Well Bore Integrity ................................................................ 19
6.1.4.4 Water Disposal Zones.............................................................................. 21
6.2 Blasting ..................................................................................................................24
6.3 Mineral Resources.................................................................................................25
6.3.1 Oil and Natural Gas ................................................................................................. 25
6.3.1.1 Conventional Oil & Natural Gas ............................................................... 25
6.3.1.2 Shale Oil and Nat
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