Manufacturing method and seaming device of composite oil pipe

Abstract

The invention discloses a manufacturing method of a composite oil pipe and a seaming device, which includes a pulse current applying device controlled by a machine vision system; during the seaming process, the machine vision system can track and judge in real time the place where the deformation resistance of the tube blank is the largest, In this way, the position of the pulse current application electrode is adjusted, and the pulse current is applied at the place where the deformation resistance of the tube blank is the largest, realizing intelligent control, reducing its deformation resistance, reducing the cracks caused by stress concentration, and reducing the force applied by the seam closing device The extrusion force of the mechanism can better ensure the joint effect; the composite oil pipe of the present invention adopts the manufacturing method of metallurgical composite steel plate, forming and welding, has high bonding strength, excellent comprehensive performance, and can adapt to the harsh environment of high temperature, high pressure and high corrosion , to reduce the production cost of sour gas-bearing oil and gas fields.

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

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