In the middle and late stages of oilfield development, with the advancement of primary and secondary oil recovery, a large amount of organic impurities such as resins, asphaltenes, and waxes will deposit in oil reservoir pores, forming blockage layers. This leads to blocked crude oil flow channels and a significant decline in recovery rate. At this time, tertiary oil recovery technology becomes a key means to increase crude oil production, and coarse-grained ammonium persulfate is an ideal auxiliary in the tertiary oil recovery system.

Plug Removal and Pore Cleaning to Dredge Oil Flow Channels

Coarse-grained ammonium persulfate has strong oxidizing properties. It can be slowly activated to generate sulfate radicals under oil reservoir temperature conditions (50-120℃). When compounded into the polymer flooding system and injected into the oil reservoir, it can decompose organic blockages in pores through oxidation, break the adsorption and confinement of crude oil by impurities, re-dredge crude oil flow channels, and significantly improve the fluidity and recovery efficiency of crude oil.

Synergistic Efficiency Enhancement to Strengthen Oil Displacement Effect

Its coarse-grained form can delay the release rate of active components. When compounded with oil displacement agents such as polyacrylamide, it can avoid the excessive consumption of oil displacement agents by oxidizing components, ensuring that the oil displacement system still has good viscosity and displacement capacity in the deep part of the oil reservoir, expanding the oil displacement sweep range, and further improving crude oil recovery rate.

Compared with fine-powder ammonium persulfate, the coarse-grained form has significant advantages in the large-scale and industrialized application of oil extraction, perfectly matching the feeding and construction needs of oilfield sites:

Precise Weighing, Convenient and Efficient Feeding

Oilfield on-site operations require calculating the precise dosage according to the geological conditions of the oil reservoir. Coarse-grained ammonium persulfate has good fluidity and is not easy to agglomerate. It can be directly added in batches and quantitatively through mechanical feeding equipment, avoiding problems such as easy dusting of fine powder, weighing adsorption loss, and low manual feeding efficiency, which greatly improves the accuracy and convenience of on-site operations.

Stable Storage, Reducing Transportation and Usage Costs

The coarse-grained structure is compact, which is not easy to absorb moisture and agglomerate during long-distance transportation and storage, and has stronger storage stability. At the same time, its particle form reduces dust pollution, minimizes corrosion to on-site equipment and health impacts on operators, and further reduces the comprehensive usage cost of oil extraction.

The coarse-grained ammonium persulfate produced by Fujian Zhanhua Chemical is targeted optimized for oil extraction scenarios, and its product performance far exceeds industry standards:

High Purity and Low Impurities, Adapting to Harsh Downhole Environment

The product purity is ≥98.5%, heavy metal content (calculated as Pb) is ≤0.0010%, and iron content is ≤0.0005%. It contains no additional harmful impurities. After being injected into the oil reservoir, it will not cause secondary pollution to the formation. The main product after reaction is sulfate ions, which meets the strict requirements of environmentally friendly oilfield extraction.

Uniform Particles, Strong Reaction Controllability

The particle size is uniform, and the release rate of active components is stable and controllable. The reaction process can be precisely regulated according to the temperature and pressure conditions of different oil reservoirs, avoiding formation damage caused by excessive local reactions, and ensuring the safety and stability of extraction operations.

Large-Scale Supply Capacity, Meeting Continuous Oilfield Needs

As a professional ammonium persulfate manufacturer, Zhanhua's annual output of ammonium persulfate can reach 75,000 tons. It has a complete cross-border logistics and domestic distribution system, with an order response cycle of ≤72 hours. It can stably supply the continuous operation needs of large-scale oilfields, providing reliable raw material support for oil extraction enterprises.

With its unique physical form and chemical properties, coarse-grained ammonium persulfate has become an efficient auxiliary for improving crude oil recovery rate in the field of oil extraction, especially in the tertiary oil recovery process. Its advantages such as precise feeding, stable reaction, and easy storage and transportation perfectly meet the needs of large-scale oilfield operations. Compared with other application fields, the value of the coarse-grained form is maximized in oil extraction scenarios, making it the preferred raw material for oil extraction enterprises to achieve production increase and efficiency improvement.

Based on in-depth insight into industry needs, Fujian Zhanhua Chemical provides high-quality products with both efficiency and safety for oil extraction enterprises through customized particle technology, strict quality control standards, and large-scale supply capacity. It not only helps oilfields achieve the goals of production increase, efficiency improvement, and green extraction, but also becomes an important force driving the coordinated development of the petrochemical and fine chemical industries with solid product strength and service guarantees—backed by the professional supply of Fujian Zhanhua Chemical and high-performance coarse-grained ammonium persulfate products.