Types and applications of oilfield additives

There are various types of oilfield additives, which play an irreplaceable role in the oilfield development process. As my country's demand for energy continues to grow, the corresponding oilfield auxiliary industry is also booming, and has formed a certain scale of development, which has played an important role in promoting oilfield development and oil and gas transportation. With the continuous development of science and technology, the development of new products has been put on the development agenda of the oilfield additives industry. Therefore, the development and prospect analysis of additives products have important practical significance for the further development of the oilfield additives industry.



(1) Petroleum drilling auxiliary products


① Oil well cement additives. Oil well cement, also known as plugging cement, is to reinforce oil well production channels, isolate the interference of oil and gas and water layers in the bottom layer from oil pipelines, thereby forming a closed oil production pipeline that directly leads to the ground, which has an important role in promoting oilfield development. At present, the development of admixture products is mainly focused on sulfonic acid polymers. Its high temperature resistance, salt resistance, and high polymerization activity characteristics have achieved remarkable results in oil well cement applications, which greatly improved oilfield development. Efficiency, to protect the efficient operation of oil well pipelines. Its main products are the following four: high temperature retarder, dispersant, fluid loss agent and anti-gas channeling agent.

② Drilling fluid treatment agent. The current development of drilling fluid treatment agents mainly revolves around environmental protection, high temperature resistance, organic-inorganic combination, clean chemical treatment agents, new plugging materials, etc. At present, China’s development in related fields has become increasingly mature, and some products have Formed an industrialized operation, the market prospect is relatively broad, and product development and application can reap good economic benefits. It is worth strengthening the research and development work in this area.


(2) Auxiliary products used in crude oil extraction


① Water blocking agent. The development of oil fields will inevitably be affected by water factors, which will have a serious impact on the steady development of oil fields. The use of water shutoff agents can effectively reduce the influence of water factors, block the path of water invasion, and improve the efficiency of crude oil extraction.

②Fungicide. Bactericide is an important basis for ensuring the quality of crude oil, and it is also a widely used product in practice.

③Acidizing corrosion inhibitor. As the oil field is located in the environment and development process, acidification corrosion is relatively serious, which has a serious impact on the corresponding equipment and mining work. Therefore, the use of acidification corrosion inhibitors can effectively reduce the economic loss caused by acidification corrosion and reduce oil Unnecessary costs and expenditures of enterprises increase economic returns.


(3) Oil and gas transportation auxiliary products


The additives used in oil and gas transportation are mainly viscosity reducers and drag reducers. The former can ensure that crude oil will not condense during transportation, effectively guarantee the quality of crude oil transportation and transportation safety, and increase the economic benefits of corresponding oil companies. The latter is the guarantee of working efficiency in the process of crude oil filling and output. Only the smooth flow of crude oil can improve the efficiency of transportation, provide sufficient energy for economic construction, and play an irreplaceable role.



Application and development prospects


(1) Monomer

In the production and research and development process of oilfield chemical additives, more and more raw materials are used, leading to increased research costs. Therefore, in order to control the price of oilfield chemicals, it is necessary to conduct new research and development on the raw materials of oilfield additives, which is also an important link in the research and development of oilfield additives. At present, the large-scale production of oilfield additives copolymers in production and use has brought certain results to the research and development of oilfield additives. However, the problem worth noting is that the price of these copolymers including acrylic acid amine group and methyl propanesulfonic acid is too high, which hinders the development of research oilfield additives. Therefore, it is necessary to reduce oilfield additives for the development of new monomers. The cost of development is a problem that needs to be solved urgently.


(2) Drilling fluid treatment agent

In the future, work should focus on the following aspects: First, research on special treatment agents for protecting oil and gas reservoirs to protect the oil and gas reservoirs to the maximum. Second, develop degradable products to lay a solid foundation for environmentally friendly drilling fluids. Third, develop low-priced emulsifiers and wetting agents suitable for non-oil-based drilling fluids. Fourth, in order to meet the needs of deep well (ultra-deep well) drilling, a drilling fluid treatment agent that can withstand temperatures above 240°C is developed. Fifth, develop ultra-high density drilling fluid treatment agents, focusing on the development of dispersants and lubricants.


(3) Pour point, drag and viscosity reducers

In the future, the research direction of drag reduction, pour point reduction and viscosity reducer is to develop high-efficiency drag reduction, pour point reduction and viscosity reduction agents suitable for different types of heavy oil and surfactants suitable for heavy oil emulsification and viscosity reduction. Among them, the research focuses on developing new products and exploring new synthetic methods and processes.


(4) Demulsifier

The future R&D direction is mainly high efficiency and environmental protection. On the basis of traditional products, chain extenders are used to increase the relative molecular weight of traditional demulsifiers, and elements such as phosphorus, silicon and boron are added to the molecules of new demulsifiers to enhance the demulsification effect.