Sometimes we need a lot of interview questions to be always ready for the interview:
This exam was in one of the personal interviews of one of the oil companies, and we collected many responses that you can read now
and benefit from.
The First Contestant:
- Collapse due to external pressure within the annulus. or No volume in the tubing. Down-hole pressure collapsed tubing
The Second Contest :
- Negative pressure test gone wrong, pressured up backside too high and probably empty tbg or they pulled out too fast and swabbed the brine out the tubings.
The Third Contestant:
- Three things I can think of :
1- Pressured annulus above max tubing collapse.
2- Parted tubing and rotated washover pipe to fish with power swivel.
3- Dropped tubing to bottom then latched with wash over pipe.
The Fourth Contestant:
- Pressure differential on backside greater than inside tubing when pulled! Been there done that on fishing jobs easy money.
Fifth Contestant:
- Running production pipe in the hole on a snubbing rig closed the slips while snubbing the joint in.
Sixth Contestant:
- While run in hole to drilling in the top hole. The jar is open. And the string is fall in the hole .. While fishing the H.W is damage like This pic
or
- Buckling effect, this can be the result of compression on the drill pipe or due to high temperature.