Manufacturing method of high-pressure and large-diameter all-metal casing patching tool

Abstract

The invention relates to the technical field of the preparation of patching pipes, in particular to a method for manufacturing a patching tool of a high-pressure and large-diameter all-metal casing, comprising: intercepting a preset length of raw material and pre-drilling it after pretreatment; After the inner diameter of the raw material is lower than the preset value, the raw material is reamed; the pressure in the raw material is gradually increased, if it is determined that the size of the raw material does not meet the standard, the reaming diameter of the next raw material to be reamed is adjusted; When standard, record the processing record and tap the raw material, and output the prepared casing patching tool after the tapping is completed. The central control unit of the present invention controls the reaming unit to ream the inner wall when it is determined that the determined inner diameter does not meet the standard, so as to ensure the compressive strength of the prepared patching pipe, and at the same time effectively increase the casing using the patching pipe During the operation, the flow rate of the internal fluid is effectively improved, and the subsidizing efficiency of the substituting pipe prepared by the method of the present invention is effectively improved.

Description

technical field [0001] The invention relates to the technical field of the preparation of patching pipes, in particular to a method for manufacturing a patching tool of a high-pressure-resistant large-diameter all-metal casing. Background technique [0002] After the casing of the oil and water well is damaged, the casing rupture should be patched up by the casing patching method to prevent the casing from leaking. In between, after the cement slurry is solidified, the casing and the patching pipe are consolidated into one, so that the ruptured casing is repaired well, so that the oil-water well can be produced normally. After the casing is subsidized, its inner diameter will be reduced, which will affect the subsequent casing when it is run into the sub-production and sub-injection tool. The greater the reduction in the casing diameter, the greater the impact. , the more difficult the tool is to design and process, the worse the reliability will be, and the shorter the ser...

AI Technical Summary

Problems solved by technology

[0004] For this reason, the present invention provides a method for manufacturing a high-pressure-resistant large-diameter all-metal casing subsidy tool, which is used to overcome the problem of the inability to make targeted improvements to the preparation process of the subsidized pipe according to the actual situation in the prior art. The problem of inefficiency

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