id: 395

Q2 An oil well located at Sarawak area is producing at a stabilized rate of 500 STB day at a stabilized bottom-hole flowing pressure assumed (1,000+ Last 3 digits of your ID) psi. Analysis of the pressure buildup test data indicates that the pay zone is characterized by a permeability of 100 mD and a uniform thickness of 20 ft. The well drains an area of approximately 40 acres. The following additional data is available: = Well radius, Tv -0.25 ft Oil formation volume factor, B. = 1.20 bb1/STB Oil viscosity. Ho = 2.2 CP Reservoir area, A = 50 acres Evaluate the pressure profile (distribution and list the pressure drop across 1 ft intervals from well radius Iw to 1.25 ft 4 to 5 ft, 30 to 31 ft 99 to 100 ft, and 830 to 831 ft. (10 marks)