Pressure plugging technology is a key technology widely used in oil, gas and chemical industries, which is mainly used to stop fluid leakage, control gas pressure and ensure stable production. Although the traditional sealing technology with pressure can ensure the stability of production to a certain extent, there are still some shortcomings in practical application, such as unstable sealing effect, complex operation and high maintenance cost. Therefore, the improvement of sealing technology with pressure has become an urgent problem in the industry.

In this paper, the basic principle of sealing with pressure, the shortcomings of the existing technology, the improvement direction and the future development trend are discussed in detail, aiming at providing valuable reference for the research and application in this field.

#### Basic principles of pressure plugging

Pressure plugging is a technique for sealing pipelines or equipment under high pressure conditions through a specific plugging device. Its basic principle mainly relies on fluid machinery and material science, usually using special sealing materials and structural design to ensure that good sealing performance can be maintained in high pressure, violent vibration and corrosive environments. The sealing device with pressure generally includes a sealing head, a sealing ring, a pressure sensor and a control system.

In practical applications, pressure plugging can be implemented in a variety of scenarios, such as in the workover operation of oil and gas Wells, when there is oil or gas leakage, it can be quickly blocked to prevent environmental pollution and economic losses. In addition, the pressure plug can also be used for equipment maintenance and modification, ensuring stability and efficiency without stopping production.

#### deficiencies of prior art

Although pressure plugging technology has been widely used in various industries, there are still some shortcomings, mainly reflected in the following aspects:

1. Unstable sealing effect ** : Under some conditions, the traditional sealing device may have poor sealing effect, resulting in liquid or gas leakage. This is particularly evident in high temperature, high pressure or corrosive media.

2. ** Complex operation ** : The existing sealing equipment with pressure usually requires personnel to operate, and the operation process is complex, which increases the labor cost and training cost.

3. ** High maintenance cost ** : Due to the particularity of the equipment, the sealing device with pressure needs regular inspection and maintenance, and the maintenance cost is relatively high. In addition, some materials will age and performance decline after long-term use, increasing the frequency of replacement and maintenance.

4. ** Limited scope of application ** : The existing sealing technology with pressure is poor in some specific environments, such as low temperature or high temperature, high pressure environment, the performance of traditional sealing materials may not meet the requirements.

#### Direction of improvement

In order to further improve the reliability of plugging technology with pressure, the following improvements are particularly important:

1. Material Innovation ** : Research and development of new sealing materials, such as high-performance polymers, metal alloys or composites, to improve sealing performance and corrosion resistance. The introduction of new materials can improve the stability of the plug and can also be applied over a wider range of temperatures and pressures.

2. ** Automatic design ** : The introduction of automatic sensors and automatic control systems to achieve real-time monitoring and feedback of the state of sealing with pressure. Through data analysis, the blocking effect can be accurately judged, and timely measures can be taken to avoid potential risks.

3. ** Simplified operation ** : Design a more user-friendly operation interface and process, reduce the complexity of the operation, so that non-personnel can quickly get started. At the same time, provide detailed operational guidance and training to ensure that operators can effectively respond to various emergencies.

4. ** Modular structure ** : The use of modular design concept, so that the various parts of the pressure sealing device can be replaced and improved according to actual needs. This design can reduce overall maintenance costs, but also improve the adaptability and flexibility of the equipment.

5. ** Multi-functional integration ** : The pressure sealing function is integrated with other functions, such as detection, monitoring, control, etc., to form composite equipment, reduce the number of equipment, reduce operating costs, and improve the overall work efficiency.

#### The future development trend

In the future, the development trend of pressure sealing technology will be mainly reflected in the following aspects:

1. ** Green hygiene ** : With the increase of health awareness, the research and development of pressure sealing technology will pay more and more attention to health performance. Future plugging materials and equipment will be developed in a non-hazardous, recyclable direction to reduce environmental impact.

** Digital Transformation ** : The introduction of digital technology will promote the further development of pressure plugging technology. Through big data, cloud computing and the Internet of Things technology, remote monitoring, data analysis and automatic decision-making of the state of pressure plugging can be achieved, improving work efficiency and stability.

3. Standardization ** : With the acceleration of the process of the world, the standardization of pressure sealing technology will become an important trend. Uniform technical standards and specifications will help improve the compatibility of equipment and reduce technical barriers in trade.

4. ** Cross-field application ** : With the continuous progress of technology, pressure sealing technology will be applied in more fields, such as construction, transportation, etc., to broaden its application range and form a greater market demand.

5. ** Stability improvement ** : Future pressure plugging technology will pay more attention to stability, especially in high-risk industries. By introducing advanced design concepts and technical means, the possibility of accidents is reduced, and the stability of personnel and the environment is protected.

#### Conclusion

Pressure plugging technology plays an important role in ensuring stable production and preventing fluid leakage. Although the existing technology has some shortcomings, it is completely feasible to improve the pressure plugging technology by means of material innovation, automatic design, operation simplification and multi-function integration. In the future, with the advancement of digital transformation and standardization, pressure plugging technology will usher in a broader space for development. We have reason to believe that after continuous exploration and innovation, pressure sealing technology will provide a more powerful guarantee for the production of various industries.