1. Petroleum: petroleum is a non renewable natural mineral resource stored in underground rock voids. It is mainly a mixture of gas-phase and liquid-phase hydrocarbons and contains a small amount of non hydrocarbon substances, which is combustible.

2. Basic properties of Petroleum (main chemical composition, state under normal temperature and pressure, density, viscosity, freezing point, flash point, ignition point, natural point, solubility, harmful substances in crude oil)

3. Natural gas (composition and specific gravity)

A: oil mainly in the form of gas is called natural gas. The main chemical composition of natural gas is gaseous hydrocarbons, mainly methane, in which there are a small amount of C2 ~ C5 alkanes and non hydrocarbon gases. 4. Natural gas hydrate

Answer: methane interacts with water at low temperature and high pressure to form an ice like hydrate, which is called natural gas hydrate, also known as combustible ice.

5. Liquefied natural gas (LNG)

Answer; The main component of liquefied natural gas is methane, which is recognized as the cleanest fossil energy on earth. Colorless, tasteless, non-toxic and non corrosive, its volume is about 1 / 625 of the volume of the same amount of gaseous natural gas, and the mass of liquefied natural gas is only about 45% of the water in the same body.

6. Natural gas classification (gas reservoir gas, reservoir gas, condensate gas, dry gas, wet gas, acid gas and net gas) can be divided into gas reservoir gas, reservoir gas and condensate gas according to the characteristics of mineral deposits. According to the composition of hydrocarbons, it can be divided into dry gas, wet gas, acid gas and net gas.

7. In which eight basins are China’s crude oil resources concentrated?

Bohai Bay, Songliao, Tarim, Ordos, Junggar, Pearl River Estuary, Qaidam and East China Sea shelf

8. In which nine basins are China’s natural gas resources concentrated?

Tarim, Sichuan, Ordos, East China Sea shelf, Qaidam, Songliao, Yinggehai, Qiongdongnan and Bohai Bay

9. What are the basic principles of China’s energy development?

The principle of energy security, the principle of sustainable utilization of energy and the principle of coordination between energy and environmental protection.