Introduction:

In engineering construction, geological exploration, oil exploitation and other fields, it is often necessary to seal and seal in pipelines, shafts and formations. As an important plugging technology, pressure plugging technology has the characteristics of flexibility and high efficiency, and is widely used in various engineering and fields. In this paper, the basic principle, working steps, application fields and development trend of sealing with pressure are introduced in detail, aiming to deeply discuss the role of this important technology in engineering practice.

First, the basic principle of sealing with pressure

Pressure plugging is a technique that uses a diffuser to expand and compact the plugging material to seal a pipeline, wellbore or formation. Its basic principle includes the following aspects:

1. Device principle: The device is a device with a retractable function that expands and compacts the sealing material to fill the void inside the pipeline or wellbore to form a solid plugging body.

2. Principle of sealing material: The sealing material is usually cement slurry, bentonite, polymer, etc., which has certain fluidity and hardening, and can fill the void and form a dense sealing body under the action of the device.

3. Pressure control principle: When sealing with pressure, it is necessary to apply a certain pressure to the sealing body to ensure the sealing effect and sealing quality, and at the same time to reasonably control the size of the pressure to avoid unnecessary risks and problems.

2. Working steps with pressure sealing

The working steps of a pressure plug usually include the following stages:

1. Preparation: including selection of appropriate devices and plugging materials, preparation of plugging tools and equipment, field investigation and measurement.

2. Dense sealing material: The sealing material is prepared and injected into the pipeline or wellbore by pumping or injecting.

3. Installer: The transmitter is sent into the pipeline or wellbore through the control device, and locates it to the position that needs to be blocked.

4. Expander: Through the device of the operator, it expands and compacts the sealing material to form a solid sealing body.

5. Pressure control: In the sealing process, by controlling the pressure and monitoring the pressure change, to ensure the sealing effect and sealing quality.

6. Testing and acceptance: After the plugging operation is completed, the plugging effect is tested and accepted to ensure the plugging quality.

Pressure plugging technology has a wide range of applications in various fields, mainly including the following aspects:

1. Pipeline plugging: In the process of pipeline construction, maintenance and repair, pressure plugging technology can be used to plug holes, cracks or damaged parts in the pipeline to ensure the normal operation of the pipeline.

2. Wellbore plugging: In wellbore repair, capping and plugging operations, pressure plugging technology can be used to plug water, gas or leakage problems in the wellbore to ensure the stability of the wellbore.

3. Formation sealing: In geological exploration, mining and underground engineering, pressure sealing technology can be used to seal cracks, holes or broken zones in the formation to ensure the stability of the formation.

Fourth, the development trend of sealing technology with pressure

With the continuous progress of science and technology and the continuous innovation of engineering technology, pressure sealing technology is also constantly developing and improving, mainly reflected in the following aspects:

1. Automation technology: The future plugging technology with pressure will pay more attention to automation and automation, through the introduction of robots, sensors and other technologies, to achieve the automation and automation of plugging operations.

2. Green health: The future plugging technology with pressure will pay more attention to environmental protection and resource conservation, and reduce the impact on the environment and resource consumption by optimizing the plugging materials and processes.

3. Multi-functional application: In the future, pressure plugging technology will pay more attention to multi-functional application, and by combining other technologies and processes, the application and expansion of writing pressure plugging technology in more fields will be realized.

Conclusion:

As an important plugging technology, sealing with pressure has important application value and development prospect in engineering construction, geological exploration, oil exploitation and other fields. Through in-depth understanding of its basic principles, working steps, application fields and development trends, we can better master and apply this technology, and provide strong support for engineering practice and scientific and technological innovation. It is believed that with the continuous progress of technology and the continuous accumulation of practice, pressure plugging technology will play an important role in more fields and make greater contributions to social development and human well-being.