Correlation of natural gas content to iron species in the New Albany shale group
✍ Scribed by Richard H. Shiley; Robert M. Cluff; Donald R. Dickerson; Conrad C. Hinckley; Gerard V. Smith; Helena Twardowska; Mykola saporoschenko
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 603 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
✦ Synopsis
Mossbauer parameters were obtained for four Illinois Basin shales and their corresponding < 2/~m clay fractions from wells drilled through the New Albany Shale Group in Henderson, Tazewell, and Effingham counties in Illinois and Christian County in Kentucky. Off-gas analysis indicated that the Illinois cores were in an area of low gas potential, while the Kentucky core was in an area of moderate-togood potential. Iron-rich dolomite (ankerite) was found in the Kentucky core but not in the Illinois cores.
In the Kentucky core, gas content could be correlated with the ankerite in the bulk sample, the Mossbauer M (2) species in the clay fraction, and a ferrous iron species in the clay fraction. The location of the greatest concentration of natural gas in the Kentucky core could be predicted by following the changes in percentage concentration of these iron species when plotted against the depth of burial of the