2. The pressure transient data for a pressure buildup test is as shown in Table Q2 below. Use the given date to: (a) Draw up the Horner plot; (b) Estimate the Formation permeability; (c) Determine the Skin factor; (d) Calculate Skin pressure drop. os xm2 [10 Marks] [10 Marks] [10 Marks] (e) Evaluate the approximate end of wellbore storage [10 Marks] (f) Compute the dimensionless wellborn storage coefficient. [10 Marks] [10 Marks] Take note of the following information: Flowing wellborn pressure prior to shutin =2832; Formation thickness, h=20ft; Porosity, =0.18; Wellbore radius, rww=0.53ft; formation Volume Factor, Bo =1.3333bbl/STB; Total compressibility, c1=2.65105psi1; Oil viscosity, =1.75CP; Production rate q=50 STBD. Table Q2. Reservoir Pressure vs Time Data