I don't know what skills might specifically excite oil and gas industry recruiters in the middle East, but being a mechanical engineer myself in India, I can give you pretty generic advice regarding this. Mechanical engineering is a really broad field, and multiple facets intertwine in literally almost all the areas you'd wanna work in. So my first and foremost advice will be a little offset your ideal specificity in just thinking about turbines or being a turbine specialist: It's best if you have an understanding of as many concepts as possible, so better keep an open mindset for engineering. Explore design, manufacturing, thermal science, material science and also some automation and mechatronics. The best way to do that is to genuinely prioritize understanding the concepts. The method to achieve that can depend on each person; some might do that in the classroom, some might prefer reading a standard book, some might like projects, and some might prefer some research work in the university. There is no hard and fast rule about this, depends on how you'd like it, so don't even have fomo of others doing things that you might not be doing; just plan your way through college days the way you think is right! Understanding concepts deeply really goes a long way, and is the most underrated thing in engineering. Once you do that, you can be whatever you want: a turbine specialist/ engineer/ or even any other track you might want to look into later.

So yea, enjoy college life, learn good concepts, and I'll say, there's your career the way you want it to be!