The technical process of sealing with pressure is a key technology commonly used in engineering construction, which plays a vital role in pipeline, wellhead and other projects. This article will deeply discuss the process flow, principle, application scope and precautions of pressure sealing technology, so that readers can have a more comprehensive understanding of this technology.

1. Definition of sealing technology with pressure

The sealing technology with pressure refers to the purpose of sealing the pipeline or wellhead by applying certain pressure inside the pipeline through specific technology and equipment. This technology can be carried out without stopping production, and has the advantages of simple operation, high efficiency and reliability, so it has been widely used in engineering construction.

Second, the process flow with pressure sealing technology

1. Preparations: Determine the plugging position, select appropriate plugging devices, and check device status.

2. Install the equipment: Install the plugging equipment on the pipeline or wellhead and ensure that the equipment is securely installed.

3. Before sealing: check the sealing performance of the sealing equipment, connect the pipeline or wellhead, and prepare the sealing liquid.

4. Apply pressure: through the pump station and other equipment into the pipeline into the sealing liquid, and gradually increase the pressure until the sealing requirements.

5. Monitoring the blocking effect: real-time monitoring of the pressure change of the blocking position to ensure that the blocking effect meets the requirements.

6. Complete the plugging: After the plugging requirements are met, stop injecting the plugging liquid and wait for a certain period of time to ensure that the plugging effect is stable.

7. Remove the device: After the plugging effect is stable, remove the plugging device, and perform necessary cleaning and maintenance.

8. Inspection and acceptance: Check the sealing position, confirm that the sealing effect meets the requirements, and complete the sealing process.

Third, the principle of sealing technology with pressure

The principle of sealing technology with pressure is to use the sealing equipment to apply pressure inside the pipeline, so that the sealing liquid fills the gap inside the pipeline, so as to achieve the purpose of sealing the pipeline or wellhead. Plugging equipment usually includes plugging head, plugging pipe, sealing ring and other components. Through the synergistic effect of these components, the internal sealing of the pipeline can be realized.

Fourth, the application range of pressure sealing technology

Pressure sealing technology is widely used in pipeline and wellhead engineering in petroleum, gas, chemical and other fields, including underground operation, pipeline maintenance, emergency treatment and so on. In petroleum exploration and development, pressure sealing technology can effectively solve problems such as wellhead leakage and pipeline damage, and ensure production and environmental protection.

Precautions for sealing technology with pressure

1. In the construction process, operate in strict accordance with the technical requirements to avoid accidents caused by operational errors.

2. Check the equipment before construction to ensure that the equipment is in good condition and prevent equipment faults from affecting the construction progress.

3. During the construction process, strictly control the injection speed and pressure of the sealing liquid to avoid pipe burst or sealing.

4. After the completion of construction, carefully check the sealing position to ensure that the sealing effect meets the requirements to avoid leakage or unfirm sealing.

In short, pressure sealing technology is an important engineering construction technology, it plays an important role in pipeline, wellhead and other projects. Through the introduction of this article, I believe that readers have a deeper understanding of the process flow, principle, application scope and precautions of the sealing technology with pressure, and hope to provide readers with some help in the actual operation of engineering construction.