Single stage calcs.

Question 1

What is rat hole

Answer 1

The open hole located below the casing shoe is call the ‘Rat Hole”
The volume of the Rat Hole is not included in the calculations

Question 2

where the pipe collapse?

Answer 2

at the bottom

Question 3

where the pipe burst or yield?

Answer 3

at shallowe 300 ft

Question 4

Mix water counts

Answer 4

Liquid + solids added wet.