Anti-blocking and anti-corrosion structure for junction of horn pipe and backflow groove

Abstract

The invention discloses an anti-blocking and anti-corrosion structure for the junction of a horn pipe and a backflow groove. The electrically communicating whole is composed of a parallel guiding pipe, an inclined guiding pipe and the horn pipe and does not make contact with the backflow groove, and an electrochemical corrosion passage between the horn pipe and the backflow groove is directly cutoff; a ceramic mounting plate, a first ceramic cushion block, a first rubber sealing pad, a bearing frame, a second rubber sealing pad and a second ceramic cushion block are matched to conduct mounting bearing, sealed protection and automatic reinforcing, thus the problem that in the prior art, the junction of the horn pipe and the backflow groove are extremely prone to corrosion is solved, and the purposes of decreasing the corrosion rate of the junction of the horn pipe and the backflow groove and decreasing the maintenance and replacement frequency are achieved; and meanwhile, the anti-blocking and anti-corrosion structure is high in stability, can be self-sealed, and can significantly lower the blocking risk of the backflow groove.

Description

technical field [0001] The invention relates to the field of anti-corrosion, in particular to an anti-blocking and anti-corrosion structure used at the junction of a trumpet tube and a reflux tank. Background technique [0002] In the field of petroleum exploration, the drilling and completion process is the most important part of the entire development process. The quality of drilling and completion directly determines the skin factor, well quality, and design deviation of a single well, which indirectly determines the single well. well recovery. The wellhead and the drill floor need to be set up during the drilling and completion process. For land oil fields, the wellhead is located on the ground, and the drill floor is at the bottom of the derrick above the wellhead; for offshore oil fields, the wellhead is located on the lower platform, and the drill floor is located on the upper platform. Therefore, no matter whether it is drilling and completion on land or offshore, i...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an anti-blocking and anti-corrosion structure for the connection between the horn tube and the reflux tank, so as to solve the problem that corrosion is easily occurred at the joint between the horn tube and the reflux tank in the prior art, and to realize slowing down of the horn tube. Corrosion rate at the connection with the reflux tank, the purpose of reducing the frequency of maintenance and replacement

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