CHEM 105 Lecture 2: Atomic Structure, Elements
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Sw= water saturation
Kr= relative permeability curve
Sw | Kra | Krb |
0.2 | 0 | 1 |
0.25 | 0.0011 | 0.85 |
0.3 | 0.0029 | 0.72 |
0.35 | 0.0047 | 0.6 |
0.4 | 0.0091 | 0.47 |
0.45 | 0.0157 | 0.35 |
0.5 | 0.025 | 0.24 |
0.55 | 0.0372 | 0.165 |
0.6 | 0.053 | 0.1 |
0.65 | 0.073 | 0.06 |
0.7 | 0.097 | 0.03 |
0.75 | 0.1259 | 0.015 |
0.8 | 0.16 | 0.005 |
0.85 | 0.2 | 0 |
Following is relative permeability data for Oil-Water system of the Magic Reservoir:
Find:
1. Which set of data (A or B) is for water and which one is for oil?
2. What is the irreducible water saturation, Swi?
3. What is the residual oil saturation to water, Sor?
4. What are the end-points (kro (Swi = irriducible water saturation), krw (Sor = risidual oil saturation)) of the relative permeability curves?
5. At what water saturation does the cross-over point occur? (from plot)
6. What you can tell about the wettability of the Magic Reservoir?
7. Assume not much of data available on the Magic Reservoir and this reservoir can be described as unconsolidated poorly sorted sand rock type! The only data you know is Soc = 0.15, Swc = 0.3 and Sgc = 0.07. Construct relative permeability curves profile for (a) drainage process and (b) Imbibition process; using Willie-Gardner correlation.
8. Comment on the results obtained in (7): (i) comparing drainage and imbibition results; (ii) comparing lab produced profile to correlation produced profile.