Petroleum Engineering

Well, both branches are good.
Depends on what you want to do. Engineers apply principles from science to create practical solutions to real-world problems. Chemical engineers use chemistry to develop fuel, food, drugs and new substances. Petroleum engineers cover chemistry and geology to extract oil and gas from under the earth's surface. Though both professions need a Bachelor's degree, they study different subjects.
Chemical Engineers:
Chemical engineers can work in any industry that uses material substances because they solve problems about the production or use of chemicals and other materials. They can create new drugs to relieve colds, find better ways to preserve canned goods or create airplane coatings that resist weather damage. They troubleshoot problems with manufacturing, develop new methods of production, ensure compliance with safety and environmental regulations, and development safety procedures for those working with hazardous chemicals. The profession requires a minimum Bachelor's degree in chemical engineering, which is more commonly called chemical and biomolecular engineering. A professional engineer's license may enhance job prospects.
Petroleum Engineers:
Petroleum engineers find more efficient and profitable ways to extract oil and gas. They design extraction equipment, plan how to drill in oil and gas fields and then recover the oil and gas, test and survey wells, and ensure that oil field equipment is installed, operated and maintained. They often work with geologists and other earth Science specialists to understand how geologic formation affects rocks that contain oil reserves. A Bachelor's degree in petroleum engineering is sufficient for entry-level jobs. However, a Master's degree allows work as an instructor in some universities, or in research and development. Practical experience, such as from an internship or summer jobs is also desirable for graduates.