Question 1

Design a casing program for a vertical development well. The regional pore pressure and fracture gradients are given in Table 1.

1. Determine casing setting depths using the fracture/pore pressure profiles given in Table 1. Check the likelihood of pipe-sticking due to differential pressures for all the casings and the kick imposed pressure at casing shoes. Use 0.5 ppg as safety margin for mud weight.

2. List the mud weight used to drill each hole section.

3. Determine hole (bit) and casing sizes for each section of the well. Use a 7 in OD production casing.