Reservoir Fluid Properties PEEG 216 PEEG 216 RESERVOIR FLUID PROPERTIES Dr. John Williams Class 14
Reservoir Fluid Properties PEEG 216 Outline • • Notice about planning • Second presentation on Compositional Analysis • Hand out Support Document • Homework
Reservoir Fluid Properties PEEG 216 Planning notice • Mid-term exam • Next quiz • I will be teaching an industry course on 7 th and 8 th April. Mr. mimoune may take these classes.
Reservoir Fluid Properties PEEG 216 Summary of Last Class • Compositional analysis of petroleum fluids is complicated. • Pressurised samples are usually separated into sub-samples to facilitate analysis. • Gas chromatography (GC) is used extensively, but distillation and other analyses can also be involved. • Analyses are simplified by grouping hydrocarbons between the “normal” (straight chain) components. • Some particular components may be used as “genetic” indicators of the origin of the fluid. • Heavy fractions are characterised by cryoscopy and density.
Reservoir Fluid Properties PEEG 216 Composition Conversions • Compositions have units and can be inter-converted. • Pure = 100 mol % = 1 000 000 ppm = mole fraction of 1 (all are based on molecules) 100 ppm = ? • However, 50 mol% ≠ 50 wt% due to differences in molar masses.