Sealing with pressure is a common technical means to solve the sealing and repair problems of various pipelines, wellheads or holes. It is widely used in oil, gas, cement, groundwater and other fields, and has important economic and environmental value. This paper will introduce the knowledge of sealing with pressure in detail from the aspects of development history, principle, application field and future development direction.

The history of pressure plugging technology can be traced back to the early development of the petroleum industry in the late 19th century. At that time, people began to use wood and iron plugs and other materials to plug the well head to control the pressure and flow of the well. With the continuous development of petroleum industry, pressure plugging technology has been further improved and innovated.

The principle of sealing with pressure is mainly to use high pressure to pressure drive the sealing material, so that it is filled and fixed at the blocked site. Common sealing materials include cement slurry, polymers, adhesives, etc. During construction, the plugging material is typically injected through the pipe or wellhead to the location where it needs to be plugged, then solidified and fixed under increased pressure.

Pressure plugging technology has been widely used in many fields. In the petroleum industry, it is used to plug the wellheads and casing assemblies of oil Wells to prevent oil and gas leaks and blowouts. In the gas and cement industries, pressure sealing can be used to maintain and repair piping systems to ensure their proper operation. In the field of groundwater treatment and environmental repair, pressure plugging technology can be used to seal boreholes and groundwater seepage points to prevent the spread and leakage of pollutants.

With the advancement of science and technology and the promotion of innovation, pressure sealing technology is also constantly developing and improving. On the one hand, the types and properties of sealing materials have been continuously expanded and improved to adapt to more complex engineering environments. For example, the introduction of new plugging materials such as high-strength polymers, nanomaterials and degradable materials has made the plugging effect more reliable and durable. On the other hand, the improvement of plugging equipment and technology has also improved the construction efficiency.

In the future, the development direction of sealing technology with pressure will mainly focus on the following aspects. First of all, it is necessary to further improve the performance and reliability of the sealing material to meet higher construction requirements and engineering environment. Secondly, it is necessary to strengthen the research on the interaction and compatibility between the plugging material and the blocked material, so as to optimize the plugging effect and extend the service life. In addition, there is a need to strengthen the research and innovation of the plugging process to improve construction efficiency and reduce the risk of human operation.

In short, pressure plugging technology is an important plugging and repair technology, with a wide range of applications and development potential. With the continuous progress of technology and the promotion of innovation, it is believed that pressure plugging technology will play a more important role in the future development, providing more stable, reliable and hygienic solutions for various industries.