Differential Sticking (Cause of Stuck Pipe)

Differential Sticking (Cause of Stuck Pipe)

In normal overbalanced drilling conditions, a pressure differential exists between the mud column and the formation pressure. In situations where the formation pressure is significantly lower than…

Mechanical Sticking (cause of stuck pipe)

Mechanical Sticking (cause of stuck pipe)

Mechanical sticking occurs as a result of one or more of the following 8 conditions:

1. inadequate hole cleaning

2. formation instability

3. key seating (not often a problem but has happened…