Though the Cotton Valley Group is productive in Mississippi, Louisiana, and Texas, little is known about production potential of the Bossier Formation (Lower Cotton Valley Shale) in southwest Mississippi. The Bossier Formation in Jefferson County, Mississippi is an organic-poor, carbonate-rich mudrock with siliciclastic intervals. Examination of cuttings by petrographic and scanning electron microscopy revealed fractures that have been filled by calcite and pore-filling pyrite. Porosity exists within and around pyrite framboids, in unfilled fractures, and within peloid grains. Organic matter is rare in Lower Cotton Valley samples suggesting it is not self-sourcing. Total Organic Carbon (TOC) values are low (0.86-1.1% TOC) compared to the productive Haynesville Shale Formation (2.8% TOC). Porosity of the Lower Cotton Valley Shale is low (2.5-4.2%) compared to productive Haynesville Shale Formations (8-12%). With current technology and gas prices, the Lower Cotton Valley Shale in Jefferson County, Mississippi does not have production potential.
|Advisor:||Kirkland, Brenda L.|
|Commitee:||Scmitz, Darrel W., Skarke, Adam|
|School:||Mississippi State University|
|School Location:||United States -- Mississippi|
|Source:||MAI 54/02M(E), Masters Abstracts International|
|Subjects:||Geology, Petroleum Geology, Sedimentary Geology|
|Keywords:||Bossier formation, Cotton valley group, Electron microscopy, Haynesville formation, Shale gas, Thermal maturity|
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