Could u believe that there are about 200 types of engineering..but we will see some main type of it: Chemical, Civil, Electrical, Engineering Management, Engineering Sciences, Geotechnical, Mechanical.

In this, chemical engineering includes the following specialties: Agricultural, biological and biosystems, chemical, environmental,food, forestry, Materials, Plastics and water resource.
Civil engineering includes: Building, Civil and construction.
Electrical engineering includes: Communications, Computer, Electrical, Electromechanical Systems, Electronic Systems, Software.
Engineering Management includes: Industrial, Integrated/Unifed, Production and systems.
Engineering Science includes: Engineering chemistry, engineering math, engineering psychics.
The Geotechnical engineering includes: Gas, Geological, Geomatics, Metallurgical, Mineral, Mining, Oil,Petroleum.
The Mechanical engineering includes: Aerospace, Automotive, Biomedical, Mechanical and Naval.
Petroleum engineering is an engineering discipline concerned with the subsurface activities related to the production of hydrocarbons, which can be either crude oil or natural gas. These activities are deemed to fall within the upstream sector of the oil and gas industry, which are the activities of finding and producing hydrocarbons.

Petroleum engineering has become a technical profession that involves extracting oil in increasingly difficult situations as the "low hanging fruit" of the world's oil fields are found and depleted. Improvements in computer modeling, materials and the application of statistics, probability analysis, and new technologies like horizontal drilling and enhanced oil recovery, have drastically improved the toolbox of the petroleum engineer in recent decades.