About petrochemical additives

What are petrochemical additives? What are their functions and classifications? That’s what I want to talk about today. Petrochemical additives refer to a class of chemical substances added in the process of oil exploitation, processing, storage and transportation, in order to improve the performance of oil, improve the utilization rate of oil, and protect equipment and the environment. There are many types of petrochemical additives, which can be divided into the following categories according to their use:

• Chemical auxiliaries for drilling and oil production: These auxiliaries are mainly used to improve the performance of drilling fluid, prevent well wall collapse, reduce the loss of drilling fluid, increase the permeability of oil and gas reservoir, improve recovery, etc. The common chemical additives used in drilling and oil production are mud treatment agent, water plugging agent, fracturing fluid, plugging agent and so on.

Chemical additives for petroleum processing: Such additives are mainly used to improve the quality of petroleum products, improve the stability and oxidation resistance of petroleum products, prevent the aging and corrosion of petroleum products, and increase the added value of petroleum products. Common chemical additives used in petroleum processing are desulfurizer, antioxidant, rust inhibitor, viscosity index improver and so on.

• Oil industry water treatment agent: This kind of auxiliary agent is mainly used to treat various wastewater produced in the oil industry, such as drilling wastewater, oil extraction wastewater, refining wastewater, etc., in order to meet environmental standards, reduce pollutant discharge, and recover valuable substances. Common oil industry water treatment agents are flocculants, water purification agents, fungicides, corrosion inhibitors and so on.

• Petroleum industry catalysts: These additives are mainly used to promote or control various chemical reactions in the petroleum industry, such as cracking, reforming, hydrogenation, isomerization, etc., to improve reaction rate and selectivity, reduce reaction temperature and pressure, and save energy and raw materials. The common catalysts used in petroleum industry are acid catalysts, basic catalysts, metal catalysts, molecular sieve catalysts, etc.

• Other chemical additives for petroleum: These additives are mainly used to meet other special needs in the petroleum industry, such as antifreeze, explosion-proof agent, cleaning agent, defoamer, etc.

Different oil fields need to match different chemical additives in different environments to improve the efficiency of oil and gas exploitation, processing, storage and transportation, and use, while reducing the impact on the environment and equipment. In general, the following factors should be considered when selecting chemical additives:

• Geological conditions of the oilfield, such as temperature, pressure, formation, lithology, etc

• Physical and chemical properties of oil and gas, such as density, viscosity, water content, sulfur content, wax content, etc

• Oil and gas extraction methods, such as conventional drilling, horizontal Wells, hydraulic fracturing, steam huff, etc

• Oil and gas processing technology, such as dehydration, desalination, desulfurization, cracking, reforming, etc

• Oil and gas storage and transportation methods, such as pipelines, tank trucks, ships, etc

• The purpose of oil and gas use, such as fuel, raw materials, lubricants, etc

Environmental protection and safety requirements, such as emission standards, toxicity assessment, accident prevention, etc

Based on these factors, chemical additives suitable for different oilfield environments can be selected, such as:

• In high temperature and high pressure oil fields, chemical additives with high thermal stability and high oxidation resistance can be used, such as polymer drilling fluid treatment agents, metal catalysts, etc

• In oil fields with high water content or high salt content, chemical additives with good corrosion inhibition and scale prevention can be used, such as phosphate corrosion inhibitors, biopolymer scale inhibitors, etc

• In oil fields with high sulfur content or wax content, chemical additives with high efficiency desulfurization and antifreeze ability can be used, such as alcoholamine desulfurizers and polyethylene glycol antifreeze agents

• In oil fields with unconventional extraction methods such as hydraulic fracturing or steam huff and puff, chemical additives with high strength and high durability can be used, such as crosslinked polymer fracturing fluids, silicone oil steam huff and puff fluids

• In oil fields with long distance storage and transportation methods such as pipelines or ships, chemical additives with viscosity reduction and aging prevention can be used, such as polyacrylates viscosity index improvers, benzotriazole antioxidants, etc

Our company RIXIN is good at sustaining innovation, and the products with excellent quality have won the praise of customers constantly. We have more than 40 kinds of products, including the corrosion inhibitors for oil field, refinery and industrial circulating water series, imidazoline, scale inhibitor, defoamers, elc. Meanwhile, the key products, Corrosion inhibitors, have successfully applied in petroleum and petro chemical units of Petro China. Sino-pec, CNOOC, Yanchang and other petroleum. Some products have reached the international advanced level, and been applied abroad successfully. With leading technology and more than 20 years of market experience accumulated, the company always concentrates onthe research of high-performance products at low-cost, and it has become a leader in the field of similar products for a long time, We always focuses on technical innovation, and cooperates with the oilfeld chemical professors and experts in Xi’an and even the whole country scientific research institutes.

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