7 Homework 1. Dervie and prove Table 2. 9.1 Water injection is carried out in a 50 ft thick, 300 ft wide, and 400 ft long grid- block (much like a rectangular core, called gridblock in reservoir simulation terminology), which has a porosity of 33% and absolute permeability of 500 mD. The injection of water is carried out at a residual oil saturation of 20%. The pressure drop across the gridblock is 5 atm. The relative permeability of water (k„) at residual oil saturation of 20% or water saturation of 80% is 0.67. Water viscosity is 1.0 cP. Calculate the water flow rate in barrels/day. 9.3 An oil-water SS displacement experiment was carried out on a 5.0 cm long and 3.0 cm diameter sandstone core plug. The porosity of the plug is 25% and the grain density is 2.65 g/cm³. Oil and water densities are 0.85 g/cm³ and 1.05 g/cm³, while viscosities are 2.0 cP and 1.0 cP, respec- tively. The differential pressure for the test is 12.94 psi. Other data are provided in the following table. Calculate and plot the oil-water relative permeability data. 9. (cm³/min) 9w (cm/min) Wet Weight of Core Plug (g) 21.20 0.00 77.7544 18.00 0.50 78.0947 10.60 1.40 78.4479 3.00 2.90 78.8011 0.40 6.50 79.1543 0.00 42.40 79.5216

7 Homework 1. Dervie and prove Table 2. 9.1 Water injection is carried out in a 50 ft thick, 300 ft wide, and 400 ft long grid- block (much like a rectangular core, called gridblock in reservoir simulation terminology), which has a porosity of 33% and absolute permeability of 500 mD. The injection of water is carried out at a residual oil saturation of 20%. The pressure drop across the gridblock is 5 atm. The relative permeability of water (k„) at residual oil saturation of 20% or water saturation of 80% is 0.67. Water viscosity is 1.0 cP. Calculate the water flow rate in barrels/day. 9.3 An oil-water SS displacement experiment was carried out on a 5.0 cm long and 3.0 cm diameter sandstone core plug. The porosity of the plug is 25% and the grain density is 2.65 g/cm³. Oil and water densities are 0.85 g/cm³ and 1.05 g/cm³, while viscosities are 2.0 cP and 1.0 cP, respec- tively. The differential pressure for the test is 12.94 psi. Other data are provided in the following table. Calculate and plot the oil-water relative permeability data. 9. (cm³/min) 9w (cm/min) Wet Weight of Core Plug (g) 21.20 0.00 77.7544 18.00 0.50 78.0947 10.60 1.40 78.4479 3.00 2.90 78.8011 0.40 6.50 79.1543 0.00 42.40 79.5216

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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