The oil industry is developing, while it uses the most advanced technology and innovative techniques to find and extract oil. As technology advances the lifetime of the oil and gas fields extends as more of the reserves can be extracted economically. At today's estimates it will need personnel for decades to come - personnel with the relevant skills and qualifications, but who are also motivated, adaptable individuals with good communication and IT skills, ready to become part of a team.
The process of finding and extracting oil and gas involves many different functions but they don't just work independently of each other.
In order to get into the career you will be required to pursue your education in either chemical engineering or petroleum engineering,further specializing and teaming it up with masters.
Hope this helps.