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TheStreeter-Phelps model can be used to compute the dissolved oxygen concentration in a river below a point discharge of sewage (Fig. P16.17),
where
As indicated in Fig. P16.17, Eq. (P16.17) produces an oxygen “sag” that reaches a critical minimum level
FIGURE P16.17
A dissolved oxygen “sag” below a point discharge of sewageinto a river.
below the point discharge. This point is called “critical” because it represents the locationwhere biota that depend on oxygen (like fish) would be the most stressed. Determine the critical travel time and concentration, given the following values:
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Chapter 16 Solutions
EBK NUMERICAL METHODS FOR ENGINEERS
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- The SCAL results for a core sample taken from an exploration well is as follows: Capillary pressure, P (psia) Water saturation, (%) 100 Water density 64 lb/ft3 4.4 100 Oil density = 45 lb/ft3 %3D 5.3 90.1 5.6 82.4 10.5 43.7 15.7 32.2 35.0 29.8 76.5 Dementa of Reservoir Rock and Fluid Properties Ch4-Saturation and Capilary Pressure Slde 51 Exercise A P U ASIA PACInc UNIVERSITY or TECHNOLOGYA ovanoN L Convert the capillary pressure table to water saturation and height, H in ft. Plot H vs Sw. 19.5 Indicate the FWL, OWC and transition zone on the plot. LA sample was taken from a depth 80 ft above the OWC. What is the expected Sw of the sample at that elevation.arrow_forwardThe left and right water edges of a river are 2.75m and 62.45m, respectively, from an initial reference point. Verticals are located at distances 11.25, 19.25 26.75, 34.45, 40.95, 46.95, and 54.45 m, respectively from the reference point. The corresponding depths of verticals are 5.00, 9.60, 9.80, 10.00, 10.40, 10.00, and 4.80m. Mean velocities in the verticals are 0.16, 0.60, 0.75, 0.92, 0.97, 0.98, and 0.65 m/s respectively. A. Determine the Total Discharge of the river. B. Determine the average velocity of the river flow.arrow_forward3.5 Construct IPR of a well in a saturated oil reservoir using both Vogel's equation and Fetkovich's equation. The following data are given: Reservoir pressure, p = 3,500 psia Tested flowing bottom-hole 2,500 psia Tested production rate at pwf1,41 = 600 stb/day Tested flowing bottom-hole pressure, 1,500 psia Tested production rate at pwf2,42 = pressure, Pwf1 Pwf2 = 900 stb/dayarrow_forward
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