What are the primary considerations in determining the Casing Setting Depth?
1-Lost circulation zones (should be planned to be done from bottom to top of the well)
2- Differential sticking (should be planned to be done from top to bottom)
3- Abnormal formation pressure (especially in the deep wells)
What are the required pressures to determine the Casing Setting Depth?
1) Formation pressure
2) Fracture pressure
3) Hydro static pressure including
a- pressure to overcome the formation pressure
b- A trip margin in mud to control swab pressures
c- An equivalent increase in the mud weight to determine the surge pressure