minimum OGPA of 7 ( after 8th sem) was required.

It was purely technical interview.
then they asked me what is your favourite subject reservoir or drilling or production.
then they asked me basic questions from production and reservoir engg.

bg,cairn,essar

go to the interview with confidence and be cool.
i you dont know any answer then simply say sorry sir i dont know or i am not able to recall it.
keep your basics clear. only simple questions are asked.
prepare your project very well. and if your project is very gud then emphasise more on it.

2 interviews: one for reservoir engg. and other for drilling and production engg.
around 35 applied.
28 got selected.
my rank was 11th among the applicants
mainly confidence.
and a bit of luck that i was not asked very hard questions.