Oil Extraction, Refining, and Petrochemical Processes Explained

Oil Extraction

• Rotation Method: A system of coupled tubes driven by a motor that turns and drills downward.
• Jacket: As the drilling progresses, the hole is lined with brown or steel liners.
• Site Utilization: Calculations suggest that oil reservoirs are typically only utilized between 25% and 50% of their total capacity.
• Pumping of Oil: When internal reservoir pressure decreases to a point where oil ceases to ascend naturally, mechanical pumps are required to force the oil to the surface.
• Water Injection: To increase reservoir profitability, water injection systems are used in parallel wells. While oil is extracted from one well, water is injected into a nearby well to maintain pressure.

Refining and Procurement of Goods

• Distillation: A fundamental operation for oil refining, with the objective of separating different components of crude oil through heat.
• Conversion: To achieve more profitable refining and match market demand, it is necessary to process products using conversion techniques.
• Treatment: Before marketing, products must undergo various treatments to remove or convert undesirable compounds, such as sulfur derivatives.

Classification of Oil

• Petroleum Asphalt: Black, viscous, and high-density. Distillation produces little naphtha and fuel oil, resulting primarily in asphalt and waste.
• Paraffinic Crude Oil: Light-colored, low-density, and fluid. It yields more naphtha than asphaltic oil, and paraffin is separated to produce lubricants.
• Mixed Petroleums: These possess characteristics and yields that fall between the two main varieties mentioned above.

What is Petrochemistry?

Petrochemistry includes the preparation of all chemicals derived from petroleum hydrocarbons and natural gas.

Petrochemical Development Stages

• Manufacture of first-generation materials or products.
• Introduction of atoms of specific components into commodities for second-generation products.
• Preparation of final consumer products.

Basic Materials

The primary materials or petrochemical chains include natural gas, light olefins, and aromatics, processed via cracking to modify their molecular structure.

Finished Goods

Common finished goods include plastics, synthetic fibers, synthetic rubber, detergents, and nitrogenous fertilizers.