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Unformatted text preview: 1 GY 305: Geophysics GY 305: Geophysics Lecture 4: Lecture 4: Petroleum Part 1: Petroleum Part 1: Reservoirs, Trapping Mechanisms, Porosity Reservoirs, Trapping Mechanisms, Porosity UNIVERSITY OF SOUTH ALABAMA Last Time Last Time Petroleum Geology (ON LINE) • Introduction • Subsurface fluids (origin of petroleum) • Migration of petroleum Rocks in the subsurface generally contain fluids: Subsurface Fluids Subsurface Fluids Water: the most common fluid and as important to the petroleum geologist as it is to hydrologists like Connors. ht p:/ www.andril .org/iceberg/blogs/luann/images/porewater-in-ss.jpg Subsurface Fluids Subsurface Fluids-Petroleum Petroleum Petroleum: A natural substance that occurs as semi-solids, liquids or gases and mutual solutions of these) 1) Crude Oil : leaves a residue of crap on distillation 2) Gas Condensate : leaves no residue on distillation A crude oil spa in Azerbaijan ht p:/ www.lindsayfincher.com/2006/12/a_barrel_of_your_finest_crude.html Subsurface Fluids Subsurface Fluids-Petroleum Petroleum Chapman, R.E., 1983. Petroleum Geology. Developments in Petroleum Science 16. Elsevier, Amsterdam, 415p. Crude oil composition varies widely from area to area, field to field and even reservoir to reservoir in one field, but elemental composition varies little....
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- Fall '10
- Geology, crude oil