Pressure plugging is a common plugging technique used to implement plugging operations in pipelines or Wells. It applies pressure in a pipe or wellbore and seals it with a sealer to stop or control the flow of fluid. Pressure plugging technology is widely used in oil, gas, water treatment, health and other fields. Below, I will introduce the principle of using the pressure plug in detail.

1. Selection of occluder parts: With pressure plugging need to select the appropriate occluder parts, common occluder parts include sealing ball, sealing expansion, sealing sleeve and so on. Consider parameters such as pipe or wellbore diameter, pressure, and temperature when selecting a sealer to ensure that the sealer can withstand the required pressure and temperature.

2. Preparation of the plugging device: Before plugging with pressure, prepare the plugging device. For example, lubricate the plugging ball to ensure its smooth entry into the pipe or wellbore; The plugging expander is inflated so that it can be expanded to the required size, etc.

3. Pressure control: Pressure control is required before sealing with pressure. First, the sealer is placed in a suitable position to ensure that it can plug the pipe or wellbore; Then, gradually increase the pressure until the desired sealing effect is achieved. During the whole process, pressure control equipment, such as pumping stations and pressure regulating valves, need to be used to ensure stable control of pressure.

4. Verification of plugging effect: After plugging with pressure is completed, it is necessary to verify the plugging effect. You can use pressure tests, water leakage detection and other means to determine whether the closure is successful. If the verification results are not satisfactory, further adjustment of the plug parts or repeated plugging operations are required.

5. Treatment after plugging: After plugging with pressure is completed, the plugging device needs to be processed. For example, pull out the sealing ball, exhaust the sealing expander, and so on. At the same time, it is necessary to clean and repair the pipeline or wellbore to ensure its normal operation.

The application principle of plugging technology with pressure includes selecting the appropriate plugging device, controlling the pressure, verifying the plugging effect and treating after plugging. Through the scientific and reasonable application of these principles, the pipe or wellbore can be blocked to control the flow of fluid or stop the flow of fluid. Pressure plugging technology has important application value in oil, gas and other fields, and provides an important guarantee for the stable production and environmental protection of related industries.