As an F-1 student you have the opportunity to gain work experience to complement your education. You may be eligible for Curricular Practical Training while you are completing your studies and Optional Practical Training after you graduate. You must see an International Student Adviser on your campus to find out about your eligibility status.
Useful links for International Students:
Schlumberger Oilfield Services, a leading supplier of services and technology to the international petroleum industry in over 100 countries around the world, is recruiting African nationals majoring in engineering and computer science.
U.S. Government Visa Information Source is a helpful site that outlines regulations about a citizen of a foreign country traveling to the U.S.and the type of visa you will need based on the purpose of your travel.