My advise: Since SLB has called u, start with them first while waitin for NLNG. They say "A bird in hand is worth ten thousand in the bush" Once u hear from NLNG and its perfect, just move over to them fast fast without wasting time. They aint partial in their recruitment. They recruit based on merit, I am talking from experience. 2me, NLNG is the highest paid coy in Naija (even more than any oil coy) with job security. They balance work with life, infact everythin is just perfect there. Really, its a place to be. I have a frend in Schlumberger who started compalinin of so much work right from the very first day he started working there till today (he's like 2yrs or more now with SLB)!!!
u can go to hell
Olutope