HOMEWORK 3 Well Testing DUE 9_12_23

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Texas A&M University *

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Dec 6, 2023

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Well Testing: PETE 324 Texas A&M University Dr. Marcelo Laprea-Bigott Fall 2023
PETE 324 HW 3 Prob 1. Estimate the rate for a well producing under steady state flow at discovery Well productivity can be estimated by using the following information Pi=5000 psia, Pwf=4500 psia Viscosity=?? Use data obtained from correlations and shown on attached Figure from Dr. Barrufet’s course notes What is the range of uncertainty? What would you recommend to reduce uncertainty? Oil Formation volume factor=1.1 Porosity=0.19 Well Radius=0.328 ft Permeability=82 md Thickness=53 ft Drainage radius=2980 ft
HW3 Viscosity Correlations M. A. Barrufet ©
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PETE 324 HW 3 Prob 2. Estimate the rate for a well producing under steady state flow at discovery Estimate Well productivity by using the following information What information is missing from the input table..? Input Data ( q ): h = 32 k = 20 P e = 3894 P wf = 2921 m = 0.25 B = 1.01 r e = 1200 r w = 0.41 S = 0
PETE 324 HW 3 Prob 2. It was uncertainty on the reservoir parameters and we need to estimate the rate for a well producing under steady state flow at discovery Well productivity can be estimated by using the following information. Plot values of p wf (psi) vs q (Stb/Day) What information is missing from the input table..? Define Uncertainty, define risk Variable Input Data ( q ): Min. Average Max. h = 32 42 52 k = 20 30 40 P e = 3500 4500 5000 P wf = 2500 3000 4500 m = 0.25 0.25 0.25 B = 1.01 1.01 1.01 r e = 600 800 1000 r w = 0.29 0.29 0.29 S = 0 0 0
Historical Basis - Darcy’s Experiments Darcy’s Paper Henry Darcy, “The Public Fountains of the City of Dijon”, 1856 6
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Text Books Ahmed, T.: Reservoir Engineering Handbook, Elsevier, 2000 or recent edition Ahmed, T. and McKinney P.D.: Advanced Reservoir Engineering, Elsevier, 2005 Amyx, J.W., Bass, Jr., D.M., and Whiting, R.L., Petroleum Reservoir Engineering, McGraw-Hill, 1960. Craft, B.C., Hawkins, M. and Terry, R.E.: Applied Petroleum Reservoir Engineering, Prentice-Hall, Englewood Cliffs, NJ, 1991. Dake, L.P.: Fundamentals of Reservoir Engineering, Elsevier, 1978. McCain, Jr., W.D., The Properties of Petroleum Fluids, Second Edition, Penn Well, 1990. Papay, J., Development of Petroleum Reservoirs, Published by Academiai Kiado, Budapest, Hungary, 2003. Towler, B.F.: Fundamental Principles of Reservoir Engineering, SPE, Richardson, TX, 2002. 7