And in you opinion who was responsible to sort the differential...

And in you opinion who was responsible to sort the differential sticking issue?
Also could it be that changing from organic to synthetic mud will help any "unexpected" mud issue with MK-2?
I still don't understand how a side-track drill can present differential sticking issues, that were not know in the original first well ?!
Another theory (I am guessing thing here) and with a bit of wishfully thinking.....is that in the side-track they found much greater formation pressure, (higher porosity and permeability ?) therefore the well deteriorated much quicker causing tools to get stuck...