Connecting structure of three-layer steel-plastic glass fiber composite pipe and connecting method thereof

Abstract

The invention discloses a connecting structure of a three-layer steel-plastic glass fiber composite pipe and a connecting method thereof. The connecting structure comprises a connecting locking tile and a positioning glass-fiber bushing, wherein steel-pipe ends every two of which are connected with each other are respectively a steel-pipe convex ring, the connecting locking tile is locked onto the two steel-pipe convex rings, and the positioning glass-fiber bushing is wrapped at the outer side of the steel-pipe convex ring. Due to the adoption of the connecting structure, the three-layer steel-plastic glass-fiber composite pipes can be easily and simply butt joined, so that the problems such as corrosion, abrasion, scaling, rapid construction, rapid emergency repair, breakage prevention by external forces and the like of a high-pressure pipeline can be thoroughly solved, a running period of the pipeline is possible to improve to 50 to 100 years, the pipeline is basically free from the later-period maintenance after being constructed, the maintenance expense in the running process can be greatly reduced, and the cost in the running period of the pipeline can be greatly reduced.

Description

technical field [0001] The invention relates to a composite pipe, in particular to a connection structure of a steel-plastic glass fiber three-layer composite pipe and a connection method thereof. Background technique [0002] my country's Daqing, Shengli, Huabei, Zhongyuan and other oilfields have entered the middle and late stage of development, and the water content is relatively large. Some blocks in the Shengli Oilfield have a water content of 95%. The produced water after oil-water separation is reinjected into the formation, with high pressure and strong corrosion. The period is short; the polymer injection process has been applied in old oilfields to tap the potential and increase production, and has achieved gratifying results. However, the high-pressure injection of polymers is highly corrosive and abrasive, so that the anti-corrosion layer in the steel pipe is quickly worn out, corroded quickly, and the service life is short. To reduce the development cost, for this...

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Problems solved by technology

[0007] The purpose of the present invention is to provide the connection structure and connection method of the steel-plastic glass fiber three-layer composite pipe, which solves the problems of ultra-high pressure water seepage and anti-corrosion and anti-wear. The butt joint of the three-layer composite pipe is realized, which completely eliminates the problem in the prior art that the long curing time of the joint affects the popularization and use

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