Pressure opening and pressure plugging are two technical means commonly used in pipeline operation, their main purpose is to achieve the stable maintenance and overhaul of pipeline shutdown. In pipeline maintenance, if you need to install new equipment, perform pipeline cleaning or check the internal condition of the pipeline, then you need to use pipeline operation techniques such as pressure opening and pressure plugging.

Let's start with the pressure opening. Pressure opening is a pipeline opening technology in the running state of the pipeline, its main principle is to use high pressure water or air flow in the middle of the pipeline fluid to open a gap to ensure that the fluid around the opening part of the pipeline continues to flow. This technology requires the use of high-pressure pumps, hole openers and other equipment, and requires strict control of the area around the pipeline to ensure that there is no impact elsewhere. Pressure opening has great advantages in pipeline equipment replacement, overhaul, maintenance and other aspects, which can avoid pipeline shutdown and ensure the normal operation of production.

The pressure plugging is the pipeline plugging technology under the running state of the pipeline, its main principle is to isolate each part of the pipeline through the middle of the pipeline or near the pipe entrance by installing a plugging device or plugging material, to achieve local shutdown. Plugging with pressure requires the use of plugging device, plugging material, control valve and other devices, and need to seal the sealing part to avoid unnecessary leakage. Sealing with pressure also plays an important role in pipeline dredging, pipeline leak detection, pipeline repair and so on.

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Next, let's compare the differ

ence between pressure opening and pressure plugging. First of all, from an operational point of view, the pressure opening is to use a pump or air flow to open a gap in the middle of the pipeline fluid, and the pressure sealing is to install a sealer or sealer near the pipe mouth to isolate the various parts of the pipeline. From the technical difficulty point of view, the area around the pipe with pressure opening needs to be strictly controlled to ensure that the fluid around the opening part continues to flow, and special equipment is required; The sealing with pressure requires the sealing part to be sealed, and requires the use of special plugging device or plugging material. From the scope of application, the pressure opening is suitable for pipeline equipment replacement, overhaul, maintenance and other aspects; The sealing with pressure is suitable for pipeline dredging, pipeline leak detection, pipeline repair and so on.

To sum up, although pressure opening and pressure plugging are both pipeline operation technologies, their implementation principles, operation methods, technical difficulty and scope of application are different. In practical applications, appropriate technical means should be selected according to different pipeline maintenance requirements to ensure the normal operation of pipelines and maintain stable production.

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