Pressure plugging is a common engineering technology, which is mainly used in the construction, repair and maintenance of pipeline, wellhead and other equipment. Its purpose is to seal the pipe or wellhead in order to carry out related operations, such as maintenance, replacement of equipment, repair of leaks, etc. The requirements and applications of this technology are described in detail below.

First, technical requirements:

1. Equipment requirements: Plugging with pressure requires the use of advanced equipment and tools, such as tools, sealers, sealant, etc. These devices should have sufficient strength and corrosion resistance to ensure the stability and reliability of construction operations.

2. Preparation before construction: Before sealing with pressure, a comprehensive survey and assessment must be carried out on the construction site, and a detailed construction party also needs to check and maintain the equipment to ensure its normal operation.

3. Requirements of construction personnel: Sealing with pressure is a highly technical project, requiring construction personnel to have relevant advanced knowledge and experience. They should be familiar with the safe operation procedures in the construction process, and have a wealth of on-site response to emergencies.

4. Stability measures: In the process of sealing with pressure, the relevant stability regulations and operating procedures must be strictly observed. Especially when working in high pressure environments, appropriate safety measures should be taken, such as wearing safety hats, gloves and protective glasses, and using protective equipment correctly.

5. Strict control of construction parameters: In the process of sealing with pressure, it is necessary to strictly control construction parameters, such as the size of the stopper, the selection of materials and the construction pressure. The reasonable selection and control of these parameters are of great significance to ensure the construction quality and stability.

6. Quality control: After the construction of sealing with pressure is completed, relevant quality inspection and testing should be carried out. These tests include sealing performance of the sealer, pressure resistance of the back pipe, etc. The equipment and construction effect that meet the requirements of relevant standards can ensure the quality and stability of the project.

7. Environmental protection: In the process of sealing with pressure, we must pay attention to environmental protection work. The debris and waste at the construction site should be properly disposed of to avoid pollution to the surrounding environment. At the same time, noise and dust control should also be done in the construction process to reduce the impact on the surrounding residents.

2. Application field:

1. Pipeline maintenance: the pipeline may be repaired and replaced during the use of leakage, corrosion and damage. The writing and pressure sealing technology can temporarily seal the pipeline for related repair and replacement work.

2. Wellhead plugging: In wellhead construction, it is often necessary to plug the wellhead to ensure the stability of construction. The pressure sealing technology can effectively seal the wellhead and prevent the wellhead spring and overflow.

3. Air tightness test: pressure sealing technology can be used for pipeline and equipment air tightness test. By plugging the pipeline, injecting a certain pressure, observing the change of pressure, so as to judge the air tightness of the pipeline and equipment.

4. Pipeline transformation: In the pipeline transformation and expansion project, the pressure sealing technology can temporarily block the pipeline, so as to carry out the related transformation and expansion work.

In short, the pressure sealing technology has important application value in pipeline construction, maintenance and transformation. It can ensure the construction stability and can improve the construction efficiency and reduce the construction cost. Therefore, in practical engineering, we should strengthen the research and application of this technology to meet the needs of construction.

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