i take it you are deciding whether to take up an offer to work out there? well i used to work for them with survey, and it was always a case of asking and not receiving. They are part of a big corpration and the bottom line is the $. And in their case, mainly due to the accountants and managemnets attitude to field staff, we get stung. Bonus’s go missing and never reach their recepient, treated like a sheep on the back of a semi-trailer from the moment you arrive to the moment you leave. Most, if not all of the westerners who worked for the company have left in the last few years (me included). Dosnt seem to phase them as they are happy to replace you with cheaper labour from the less developed parts of the world. I have since gone freelance and have never looked back, especially since the price of oil maxing out the way it is. Its not all bad however, cos the experience is gold, but for my part, leaving was the best move i could have done after my time there. feel free to drop anymore specific questions you might have.
Cheers