Silicone oil plays multiple key roles in petroleum extraction, and its unique physical and chemical properties make it an important auxiliary material to improve mining efficiency and ensure safe production.The following analysis is carried out from three aspects: core application scenarios, technical advantages and typical cases：


1. Core application scenarios
Drilling fluid stabilizer
In the drilling process, silicone oil (especially hydroxyl silicone oil emulsion) is used as a filter loss reducing agent and an anti-collapse agent, which can effectively control the penetration of drilling fluid into the formation and prevent the collapse of the well wall.Its low surface tension characteristics can also reduce the friction between the drill bit and the cuttings and reduce the risk of stuck drilling.For example, in high-temperature and high-pressure wells, the optimized silicone oil emulsion formula can improve the temperature resistance to 200℃ and the salt resistance to a concentration of 20%, which is significantly better than traditional treatment agents.
Oil recovery efficiency enhancer
Silicone oil defoamers are “invisible assistants” in crude oil extraction.The gas and foam produced by the crude oil in the oil well will hinder the transportation. By quickly destroying the stability of the foam, the volume of the foam will be reduced by more than 90% to ensure the smooth flow of the pipeline.In the links of natural gas desulfurization and oil refining deceleration, the amount of silicone oil defoamer only needs 10-100PPM to achieve efficient foam control.
Oil-water well maintenance materials
Silicone oil can be used as an anti-waxing agent and anti-fouling agent to inhibit the attachment of sediments to the pipe wall by changing the crystallization form of wax crystals and scale salts in crude oil.For example, in water injection oil recovery, silicone oil modifiers can reduce the fouling rate by 70% and extend the oil well maintenance cycle.
2. Analysis of technical advantages
Extreme environmental adaptability: The main chain of silicone oil is composed of silicon-oxygen bonds, with a temperature resistance range of -50℃ to 200℃, and is stable to acid-base and oxidants, and can cope with complex working conditions such as deep-sea drilling and shale gas development.
Multifunctional integration: Through molecular structure modification (such as the introduction of phenyl and fluorine groups), silicone oil can have various functions such as lubrication, defoaming, and anti-corrosion at the same time, reducing the types of chemical agents and reducing comprehensive costs.
Environmental protection compatibility: The new type of water-based silicone oil emulsion has a biodegradable rate of more than 80%, and is non-toxic and harmless, which meets the increasingly stringent environmental protection regulations around the world.
3. Typical case: Application practice of Shengli Oilfield
Shengli Oilfield adopts silicone oil composite oil flooding technology in high-temperature and high-salt reservoirs, and composes the polymer with silicone oil surfactants to form an ultra-low interfacial tension system.This technology has increased the recovery rate by 12% and the daily oil output of a single well by 3 tons. At the same time, the temperature and salt resistance of the silicone oil emulsion has extended the validity period of the formula to 18 months, which is 50% higher than that of traditional chemical emulsions.