Petroleum, one of the main objects of geological exploration, is a viscous, dark brown liquid known as the "blood of industry". There are oil storage in some parts of the upper crust. The main components are mixtures of various alkanes, cycloalkanes and aromatic hydrocarbons. Petroleum is mainly used as fuel and gasoline, as well as raw materials for many chemical industrial products, such as solutions, fertilizers, pesticides and plastics.

Petroleum, one of the main objects of geological exploration, is a viscous, dark brown liquid known as the "blood of industry". There are oil storage in some parts of the upper crust. 1 The main components are mixtures of various alkanes, cycloalkanes and aromatic hydrocarbons. Petroleum is mainly used as fuel and gasoline, as well as raw materials for many chemical industrial products, such as solutions, fertilizers, pesticides and plastics.

The oil industry is the industrial sector that extracts oil (including natural oil, oil shale, natural gas) and refines and processes it. It is composed of oilfield geological exploration, oilfield development and oil exploitation, transportation, refining and processing and other units. Petroleum is the "blood" of industry and an important industrial energy source.

石油行业是开采石油（包括天然石油、油页岩、天然气）和对其进行炼制加工的工业部门。由油田地质勘探、油田开发和石油开采、输送、炼制加工等单位构成。石油是工业的“血液”，是重要的工业能源。

The oil industry is the industrial sector that extracts oil (including natural oil, oil shale, natural gas) and refines and processes it. It is composed of oilfield geological exploration, oilfield development and oil exploitation, transportation, refining and processing and other units. Petroleum is the "blood" of industry and an important industrial energy source.

The oil industry is an industrial sector that extracts and processes oil (including natural oil, oil shale and natural gas). It is composed of oilfield geological exploration, oilfield development, oil exploration, transportation, refining and processing. Oil is the "blood" of industry and an important industrial energy source.

The oil industry is the industrial sector that extracts oil (including natural oil, oil shale, natural gas) and refines and processes it. It is composed of oilfield geological exploration, oilfield development and oil exploitation, transportation, refining and processing and other units. Petroleum is the "blood" of industry and an important industrial energy source.

The oil industry is the industrial sector that extracts oil (including natural oil, oil shale, natural gas) and refines and processes it. It is composed of oilfield geological exploration, oilfield development and oil exploitation, transportation, refining and processing and other units. Petroleum is the "blood" of industry and an important industrial energy source.