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(40 points) Calculate the wellhead pressure for the production of 1000 bbl/d of oil with a density of 0.85 g/cm' and a viscosity of 3 cp in a 10000-ft vertical well having a bottomhole pressure of 6000 psi and a 2-in., 3.4-Ibm/ft tubing. The inner diameter of a 2-in., 3.4-Ibm/ft tubing is 1.75 in., and the relative roughness is 0.003. (40 points) Calculate the wellhead pressure for the production of 1000 bbl/d of oil with a density of 0.85 g/cm' and a viscosity of 3 cp in a 10000-ft vertical well having a bottomhole pressure of 6000 psi and a 2-in., 3.4-Ibm/ft tubing. The inner diameter of a 2-in., 3.4-Ibm/ft tubing is 1.75 in., and the relative roughness is 0.003