Constructive characteristics of the electric heating system in cold conditions in the Mohair area

The Mohe Basin is a Mesozoic fault-depression-converted basin, and the degree of breeding in the basin is very low. According to the geological study of outcrops in the field in combination with the current drilling and seismic data of a comprehensive study, it is concluded that the Erzhan formation and the Emulkha formation 2 are widely developed in the area. This combination of the main nephtheme rocks, the thermal evolution of organic matter is in a mature-high-mature stage, Reservoirs are being developed, and oil and gas deposits are all sandstones and volcanic rocks, and oil and gas sources are relatively rich. But its geographical position is special, it belongs to an extremely cold environment, the lowest temperature can reach-50 ° C. Consequently, pipelines in extremely cold conditions must rely on electric heating systems to maintain pipeline temperatures in place to ensure safe production. The oil and gas project in extreme cold conditions is a project that includes the most complete types of electric heating equipment, the highest reliability and the largest software management. The products cover all product series of major electric heating manufacturers.

Thus, the electric heating system is a strong current operating system. If the construction and debugging work is not done properly, it is very easy to have problems such as cracks freezing, burning and fire, and failure to repair, with incalculable consequences. The cost increases and, more importantly, affects the safety of production. Thus, the electric heating system is an operating system with a strong current. If the construction and debugging work is not done properly, it is very easy to have problems such as cracks freezing, burning and fire, and failure to repair, with incalculable consequences. The cost increases and, more importantly, affects the safety of production.

Compared to conventional projects, the design of electric heating systems for oil and gas projects in extreme cold conditions is more complex and rigorous and has the following characteristics:

1. There are many intermediate processes, long paths and multiple control points. The entire route of the power cable of the electric heating system in an extremely cold environment is more complicated than that of conventional projects. In the middle, many intermediate process control elements are added, such as: intermediate junction box, temperature control unit, automatic switch, temperature sensor, etc. D. Incorrect or incorrect installation of each process will directly lead to the collapse of the entire system.

2 Compared to normal projects, the project for extreme cold conditions has increased the communication path and centralized control system, which greatly increases the requirements for design accuracy and debugging complexity. An example is as follows: The data of each thermostat must be returned to the UIT centralized control system via the RS485communication link. The centralized control system requires very accurate data at the bottom end. During construction, the length of each loop must be strictly consistent with the design length. If there is an error in any link during installation, the entire system will not be able to debug successfully.

3. Taking into account factors such as maintenance at a later stage, a backup circuit is added to each main heating circuit.

Summing up, we can say that the electric heating system in extremely cold conditions has its own characteristics, ranging from the design and choice of electric heating to the principle of operation, which is very different from conventional projects. Whether it is a designer or construction personnel, they must have a deep understanding of the characteristics of the system and materials in order to master the key stages of the project construction process and ensure the quality of the project construction. Shandong Huaning has long been dedicated to providing comprehensive electric heating solutions for industrial, commercial and civil markets, and has obtained a third-level qualification for professional contracting for building electromechanical plant design and second-level qualification for professional contracting for waterproof, anti-corrosion-corrosion and thermal insulation engineering; with years of experience and technical knowledge, To provide customers with more comprehensive design, supply, quality assurance, installation and maintenance services.