ENSC 2001 Lecture Notes - Lecture 7: Lignite, Anthracite, Energy Independence
13 Nov 2017
School
Department
Course
Professor
Document Summary
Energy supply and demand: fossil fuels: 90% of us energy consumption (10% from hydropower and nuclear power, fossil fuels non-renewable resources, conventional fossil fuels peak discoveries in 1960s, energy consumption increases over time. Estuaries, lagoons, low-lying coastal plains or delta environment. Massive dead plants -> buried in an anaerobic (o-deficient) environment -> peat -> prolonged burial and transformation to increase carbon content -> coal. Threats: health (pollutions inc. co, so2, hg, natural and built environment, atmosphere (cos, warming) Formation of oil and gas in source rock -> Mitigate into reservoir rock (porous and permeable) O&g trapped over geologic time in certain structures. Geologic conditions for o&g fields: source rock: fine-grained organic rich sedimentary rocks. O&g migrating upward to the reservoir rocks: reservoir rock: porous and permeable rocks, cap rock: impermeable rock as a barrier to trap o&g in place, forming oil fields. Primary recovery- oil is forced out by pressure generated from gas present in the oil.
