Petroleum engineering is a combination of innovation, exploration and expansion. This major fuels the world and provides the building blocks for every other profession to effectively carry out its work. Energy is a key component in our everyday lives. A secure energy future requires a balance between environmental impact and affordable supply. Petroleum and geosystems engineers are able to address and solve important issues that will lead to energy security and thus are in high demand. Petroleum engineering overlaps with many of the engineering disciplines, such as: mechanical, chemical, and civil. Petroleum engineers have a future full of challenges and opportunities. They must develop and apply new technology to recover hydrocarbons from oil shale, tar sands, and offshore oil and gas fields. They must also devise new techniques to recover oil left in the ground after application of conventional producing techniques. Since many petroleum companies conduct worldwide operations, petroleum engineers have the opportunity for assignments all over the world. Petroleum engineers must solve the variety of technological, political, and economic problems encountered in these assignments. These exciting challenges combine to offer a petroleum engineer a most rewarding career.