Yes it depends on the kind of scholarship you are holding, whether you are an overseas or local stat board scholar.

If you are starting off as a G at Shell, it is comparable to being on a fast track scholarship in public service, but only for the first 3 years. After that, you are in a pool with all other Shell employees competing for job rotations and golden handshakes. But you do have an edge over your other G peers since you have a career headstart in an overseas plant, as a technologist I presume. Your career is from the start not limited to Singapore. If you work hard, you will get good recognition and progression internationally.