Manufacturing method of composite oil pipe and joint closing device

Abstract

The invention discloses a manufacturing method of a composite oil pipe and a joint closing device. The joint closing device comprises a pulse current applying device controlled by a machine vision system. In the joint closing process, the machine vision system can track and judge the position with the maximum pipe blank deformation resistance in real time, so that the position of a pulse current applying electrode is adjusted, pulse current is introduced into the position with the maximum pipe blank deformation resistance, intelligent control is achieved, the deformation resistance is reduced,cracks generated by stress concentration are reduced, the extrusion force of a force application mechanism of the joint closing device is reduced, and the joint closing effect is better guaranteed. The composite oil pipe adopts the manufacturing method of metallurgical composite steel plates, molding and welding, is high in bonding strength and excellent in comprehensive performance, can adapt tohigh-temperature, high-pressure and high-corrosion severe environments, and reduces the exploitation cost of an oil and gas field containing acid gas.

Description

technical field [0001] The invention belongs to the field of oil pipe production, and in particular relates to a method for manufacturing a composite oil pipe and a seaming device. Background technique [0002] With the increasing demand for energy, the exploitation of oil and gas fields is gradually developing towards deep wells and highly corrosive environments. Contains acid gas such as H 2 S, CO 2 , Cl - Such oil and gas fields are often in the harsh environment of deep wells, high temperature, high pressure, and high corrosion. Therefore, the high temperature and high pressure corrosion resistance requirements of oil well pipes are very high. high. In order to reduce mining costs and prolong the service life of pipelines, for high H 2 S, CO 2 Severe corrosion problems in oil and gas fields have carried out technical research. The research results show that the use of corrosion-resistant alloy composite pipes is one of the relatively safe and economical ways to sol...

AI Technical Summary

Problems solved by technology

The use of metallurgical clad steel plates or steel strips and forming welding processes to manufacture composite pipes is a new manufacturing method for composite pipes developed in recent years, but because of the differences in properties of dissimilar metal materials, it is difficult to obtain high-quality composite pipes

Images