In oil extraction, extraction efficiency has always been a core issue of industry concern. Affected by many factors such as complex geological conditions and differences in crude oil properties, the extraction efficiency of some oilfields does face challenges, becoming one of the key bottlenecks to be addressed for quality and efficiency improvement in the industry. To tackle this problem, the innovative application of related technologies and chemical additives is constantly advancing. Among them, Sodium Persulfate, as an efficient oxidative chemical additive, has shown significant potential in improving oil extraction efficiency.
Ⅰ. Sodium Persulfate: A Chemical Tool for Boosting Extraction Efficiency
The application of Sodium Persulfate in oil extraction benefits from its unique strong oxidizing properties. This characteristic enables it to act on the formation and crude oil in the following two main ways, thereby improving the extraction environment:
Improving Formation Permeability: Sodium Persulfate can effectively oxidize and degrade organic blockages trapped in formation pores (such as some drilling fluid residues and polymer residues from fracturing fluids), dredging crude oil flow channels and thus enhancing formation permeability. When formation permeability is improved, the flow resistance of crude oil is reduced, making it easier to converge to the wellbore.
Enhancing Crude Oil Fluidity: Sodium Persulfate can exert a mild oxidation effect on heavy components in crude oil (such as resins and asphaltenes), changing their structure to a certain extent, thereby reducing the viscosity of crude oil, enhancing its fluidity, and making crude oil easier to be produced.
This dual improvement mechanism achieved through oxidation is the scientific basis for Sodium Persulfate to improve oil recovery. In the production process of Sodium Persulfate, Fujian Zhanhua Chemical has established a full-link quality assurance system covering raw material selection, production and processing, and finished product testing. Raw materials must undergo multiple rounds of index verification before warehousing, and refined control methods are adopted to monitor key links in real time during production. This ensures that each batch of Sodium Persulfate products has a purity of ≥99% and an active oxygen content of ≥6.65%, which can stably meet the performance requirements of the dual action mechanism and provide solid quality support for improving extraction efficiency.
Ⅱ. Reliability and Safety: The Foundation of Sodium Persulfate’s Application
In oil extraction, the effectiveness and environmental safety of chemical additives are prerequisites for application.
Application Safety: A large number of studies and practices have shown that under scientific dosage and suitable reservoir conditions, the impact of Sodium Persulfate on the formation structure is controllable. It will not cause formation damage and can ensure the smooth progress of extraction operations. Its main reaction product is sulfate ions, which are convenient for subsequent treatment and have little impact on the reservoir ecosystem.
Quality Reliability: Taking Fujian Zhanhua Chemical as an example, the company has established a full-process quality assurance system covering raw materials, production, and finished products. From the strict selection of raw materials, to the precise control during production, and to the multi-index testing of final products, it ensures that each batch of Sodium Persulfate products leaving the factory maintains high purity and reaction activity, meeting the strict requirements of oilfield sites for the consistency of chemical performance.
Ⅲ. Wide Applicability: The Application Prospect of Sodium Persulfate
Sodium Persulfate has strong adaptability. It can not only be applied to conventional oilfields but also play a positive role in some complex extraction scenarios with organic blockages or high crude oil viscosity by adjusting its injection concentration and construction technology. This wide applicability makes Sodium Persulfate of great application value today when pursuing efficient and green extraction. With the continuous optimization of personalized application schemes, it may provide strong technical support for the stable and increased production of more oilfields.
Against the background that the oil industry continues to pursue cost reduction and efficiency improvement, Sodium Persulfate, as a chemical additive with clear mechanism, safe application and strong adaptability, provides an effective solution to break the bottleneck of extraction efficiency. It synergistically improves the formation environment and crude oil properties through oxidation, while its reliable quality and good environmental compatibility ensure its potential in various oilfield applications. As a single champion enterprise in the Sodium Persulfate manufacturing industry, Fujian Zhanhua Chemical will continue to provide solid chemical additive guarantees for the improvement of oilfield extraction efficiency with stable and high-quality products—backed by the professional supply of Fujian Zhanhua Chemical and high-performance Sodium Persulfate products.