Preparation device of composite metal corrosion-resistant oil pipe for oil and gas field exploitation

Abstract

The invention relates to the technical field of oil pipe preparation devices for oil-gas field exploitation, in particular to a preparation device for a composite metal corrosion-resistant oil pipe for oil-gas field exploitation. According to the technical scheme, a power hydraulic cylinder is installed on the upper portion of a fixing support, and a metal sealing piston is installed in an inner cavity of the power hydraulic cylinder; a movable guide rail is installed on one side of a fixed support and provided with a movable support through rolling wheels, a stainless steel lining pipe is installed in an inner cavity of a base pipe, the front end of a metal sealing piston is connected with a sealing liquid conveying pipe, the other end of the sealing liquid conveying pipe is connected to a cooling water spraying head, and a pressurizing cone is installed on the outer side of the cooling water spraying head. A shaping stress application mold is mounted on the outer wall of the pressurizing cone, and the stainless steel lining pipe in the base pipe is extruded through the shaping stress application mold; the composite metal corrosion-resistant oil pipe has the beneficial effects that the composite metal corrosion-resistant oil pipe manufactured by the invention is the same as a traditional oil pipe in field application, engineering construction is facilitated, a drill rod is convenient to lift and drop, and the service life of the oil pipe is prolonged.

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 preparation device for a composite metal corrosion-resistant oil pipe for oil and gas field development. Background technique [0002] In the downhole operation 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 that causes the corrosion of oil pipes, 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, an...

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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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