Method for protecting thread in process for treating inner surface of double-sealing surface tube used for oil exploitation

Abstract

The invention provides a method for protecting a thread in a process for treating the inner surface of a double-sealing surface tube used for oil exploitation, comprising the following steps of: A, accurately measuring the effective thread length at a female terminal joint of the tube and the sectional area of an inner sealing surface; B, according to the measurement result, making a steel washerand a rubber washer which have the sectional areas consistent with the sectional area of the inner sealing surface; C, according to specification of the tube, selecting a shortened standard thread protector as a thread protection base; and D, sequentially placing the rubber washer, the steel washer and the thread protection base into the tube, and then treating the inner surface of the tube. By adopting the method provided by the invention, the processing cycle of a thread protector can be shortened, the production efficiency can be improved, the delivery time can be guaranteed, and the production cost can be reduced to the utmost extent. The thread in the process for treating the inner surface of the tube used for the oil exploitation can be protected by adopting an assembling and disassembling way.

Description

technical field [0001] The invention relates to a pipe fitting protection method, in particular to a thread protection method in the process of treating the inner surface of a pipe with double sealing surfaces for petroleum development. Background technique [0002] During the production and processing of the inner coating of pipes used in oil development with double sealing surfaces, it is necessary to protect the thread of the female end joint of the pipe and the inner sealing surface from damage when the inner surface of the pipe is treated, so a special thread protection method is required for protection. The production of thread protection methods in the prior art is based on the nesting principle, that is, the way that ordinary rubber thread protection rings are embedded in iron barrels, which determines the need to include surveying and drawing→raw material procurement→outsourcing processing→new tooling acceptance→new tooling trial→ The production of the thread protec...

AI Technical Summary

Problems solved by technology

The production of thread protection methods in the prior art is based on the nesting principle, that is, the way that ordinary rubber thread protection rings are embedded in iron barrels, which determines the need to include surveying and drawing→raw material procurement→outsourcing processing→new tooling acceptance→new tooling trial→ The production of the thread protection method can only be completed in seven steps such as repair and remodeling

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