A device for preparing composite metal corrosion-resistant tubing for oil and gas field development

Abstract

The invention relates to the technical field of an oil pipe preparation device for oil and gas field development, in particular to a preparation device for a composite metal corrosion-resistant oil pipe for oil and gas field development. The technical solution is: a power hydraulic cylinder is installed on the upper part of the fixed bracket, and a metal sealing piston is installed in the inner cavity of the power fluid cylinder; Install the stainless steel lining pipe, the front end of the metal sealing piston is connected to the sealed infusion tube, the other end of the sealed infusion tube is connected to the cooling water spray head, and the pressurized cone is installed on the outside of the cooling water spray head, and the outer wall of the pressurized cone is installed and shaped The booster die squeezes the stainless steel liner in the base pipe through the stereotyped booster die; the beneficial effect is that the composite metal corrosion-resistant oil pipe made by the present invention is the same as the traditional oil pipe in field application, which is convenient for engineering construction and convenient starting. Lower the drill pipe and prolong the service life of the tubing.

Description

technical field [0001] The invention relates to the technical field of an oil pipe preparation device for oil and gas field development, in particular to a composite metal corrosion-resistant oil pipe preparation device for oil and gas field development. Background technique [0002] In the downhole operation of oil and gas fields, it is often found that the production tubing is corroded in batches, and even the tubing is corroded and perforated, which brings great difficulties to the continuous production and workover operations on site. By analyzing the root cause of tubing corrosion, it is found that H contained in downhole fluid in oil and gas well production 2 S, CO 2 , Cl - It is the main factor that causes the corrosion of the tubing, which brings losses to the oil production plant and brings great difficulties to the construction of the underground operation team. [0003] The publication number of the Chinese patent document is CN111119749B, and the patent name i...

AI Technical Summary

Problems solved by technology

[0002] In the downhole operations of oil and gas fields, it is often found that batches of production tubing are corroded, and even the tubing is corroded and perforated, which brings great difficulties to the continuous production and workover operations on site.

Through the analysis of the root cause of tubing corrosion, it was found that the H contained in the downhole fluid in oil and gas well production 2 S, CO 2 , Cl - It is the main factor causing oil pipe corrosion, which brings losses to the oil production plant and brings great difficulties to the construction of the downhole operation team.

[0003] The publication number of the Chinese patent document is CN111119749B, and the patent name is "A Lightweight Downhole Oil Pipe for Oilfields", which relates to a downhole oil pipe for oil fields. The problem

This patent is for the fiber composite material tube, its preparation process is complex, especially the reliability of the connection between the metal tube and the fiber composite material tube is not good

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