In modern industrial production, stability and efficiency are two indispensable elements. Especially in high risk industries such as oil and gas, the innovation of sealing technology with pressure is particularly important. As a key technology to prevent fluid leakage and control wellhead pressure, pressure plugging technology has been widely used in many fields in recent years. This paper will discuss the background, development history, innovation status and future trend of sealing technology with pressure.

1. Background of pressure plugging technology

Pressure plugging technology was first used in the field of oil and gas exploitation. With the increasing energy demand, traditional plugging technology can no longer meet the needs of modern industry. Traditional plugging methods usually need to be carried out under the condition of reduced wellhead pressure, which is time-consuming and labor-intensive, and may lead to the leakage of wellhead fluid, which can lead to environmental pollution and stability accidents. Therefore, the development of a technology that can plug in high-pressure environments has become an urgent need in the industry.

### 1.1 Driven by technical requirements

With the gradual depletion of oil and gas resources, the exploitation height and difficulty are increasing, and the traditional plugging means can not meet the new challenges. With pressure plugging technology came into being, can quickly and effectively plug the fluid under high pressure environment, to ensure the high efficiency of the operation. At the same time, the application of pressure sealing technology also provides new solutions for other industries, such as chemical, mining and so on.

1.2 The dual pressures of stability and hygiene

In recent years, the world pays more and more attention to environmental protection, especially in the process of oil and gas exploitation, the problem of environmental pollution caused by fluid leakage becomes more and more serious. The pressure sealing technology can effectively reduce the risk of leakage, reduce the impact on the environment, and meet the requirements of sustainable development.

Second, the development of pressure plugging technology

The development of pressure plugging technology has gone through multiple stages, from the initial simple mechanical plugging to today's high efficiency, and technological progress has promoted the change of the industry.

2.1 Initial stage: mechanical plugging

The earliest pressure plugging techniques relied primarily on mechanical devices to physically stop the flow of fluid. Although this method is simple, in high pressure environments, the reliability and durability of the mechanical device is limited, and it is prone to failure.

2.2 Progressive development: hydraulic plugging

With the progress of hydraulic technology, hydraulic plugging has gradually become the mainstream. The hydraulic plugging technology controls the opening and closing of the plugging device through the hydraulic system, which can achieve a more stable plugging effect under high pressure environment. However, this technology still has certain limitations, such as the dependence on the hydraulic system and the high skill requirements of the operator.

2.3 Modernization: Automated plugging

In the 21st century, the rapid development of information technology has brought new opportunities for pressure plugging technology. Automatic plugging technology comes into being. Through sensors, data analysis and automatic control system, real-time monitoring and automatic adjustment of plugging process are realized. This technology improves the efficiency and stability of the plug and reduces the reliance on manual operation.

Third, the innovation status of pressure plugging technology

3.1 Material innovation

In the pressure sealing technology, the choice of materials is very important. In recent years, with the development of new high-performance materials, the pressure resistance and corrosion resistance of the plugging device have been significantly improved. For example, the application of composite materials and nanomaterials enables the plugging device to maintain good performance in high temperature and high pressure environments.

3.2 Equipment innovation

The innovation of equipment is another important aspect of the development of pressure plugging technology. Modern pressure plugging equipment has higher plugging efficiency, but also integrated a variety of functions, real-time monitoring, fault warning and so on. For example, some new automatic plugging devices can transmit real-time data back to the control center via wireless transmission technology, so that operators can adjust strategies in time.

3.3 Software innovation

With the development of information technology, the application of software in pressure plugging technology is becoming more and more extensive. Through data analysis and simulation software, operators can conduct risk assessment and decision support before plugging, greatly improving the success rate of plugging.

4. Application cases of pressure plugging technology

4.1 Oil and gas industry

Pressure plugging technology is widely used in oil and gas exploitation. By plugging in high-pressure environments, it can effectively prevent the leakage of wellhead fluid and ensure the safety of the operation. For example, in the production process of an oil field, due to the high wellhead pressure, the traditional plugging method could not be implemented, and finally adopted the pressure plugging technology, successfully avoided a potential leakage accident.

4.2 Chemical industry

In the chemical industry, pressure plugging technology also plays an important role. In the process of chemical reaction, the pressure and temperature in the reactor are often high, and the traditional sealing method cannot guarantee the safety. Through the use of pressure sealing technology, the reaction process can be effectively controlled under high pressure environments, reducing the risk of accidents

### 4.3 Mining

In mining, the sealing technology with pressure has also been applied. The problem of water flow and gas leakage in the mine has always been a difficult problem in the industry. Through the pressure sealing technology, the fluid flow in the mine can be effectively controlled to protect the miners.

5. Future trends

5.1 Automation development

In the future, pressure plugging technology will develop in the direction of automation. With the continuous advancement of manual automation and big data technology, data analysis and decision support during the plugging process will become more automated, and operators can predict potential risks through data models, so that measures can be taken in advance.

5.2 Sustainable development

In the context of sustainable development in the world, pressure sealing technology will also develop in the direction of energy saving. The application of new sanitary materials and the development of energy-saving equipment will make the sealing technology with pressure at the same time, reduce the impact on the environment.

5.3 Cross-industry applications

With the continuous maturity of technology, the application field of pressure sealing technology will continue to expand. In addition to the traditional oil, gas and chemical industries, the future may also play an important role in construction, health and other fields.

## Conclusion

The innovation of sealing technology has improved the efficiency of industrial production and also provided strong support for environmental protection. With the continuous progress of technology and the expansion of application fields, pressure plugging technology will play a more important role in the future. We expect this technology to be applied in more areas and contribute to sustainable development.