Method for removing salt crystallization blockage of natural gas pipeline

A technology for natural gas pipelines and natural gas, applied in cleaning methods and appliances, chemical instruments and methods, and cleaning hollow objects, etc., can solve the problems of low efficiency when unblocking natural gas pipelines, and achieve the effect of improving the efficiency of unblocking

Pending Publication Date: 2022-03-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can solve the problem of low efficiency when deblocking natural gas pipelines in the prior art, and the technical scheme is as follows:

Method used

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  • Method for removing salt crystallization blockage of natural gas pipeline
  • Method for removing salt crystallization blockage of natural gas pipeline
  • Method for removing salt crystallization blockage of natural gas pipeline

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Experimental program
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Embodiment Construction

[0048] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0049] The embodiment of the present application provides a method for removing blockage caused by salt crystallization of a natural gas pipeline. The natural gas pipeline may be a pipeline that is severely blocked and cannot be passed by a pigging device. Please refer to figure 1 , figure 1 It is a flow chart of a method for unblocking a salt crystallization blockage of a natural gas pipeline provided in an embodiment of the present application. The method can include:

[0050] Step 101, using an injection pump to inject a liquid chemical plug-removing agent at the first end of the natural gas pipeline, so that the chemical plug-removing agent injected into the natural gas pipeline is in a turbulent state.

[0051] In the pre...

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Abstract

The invention discloses a blockage removing method for salt crystallization blockage of a natural gas pipeline, and belongs to the technical field of pipelines. The method comprises the steps that a liquid chemical blocking remover is injected into the first end of the natural gas pipeline through an injection pump, so that the chemical blocking remover injected into the natural gas pipeline is in a turbulent flow state; after the natural gas pipeline is filled with the chemical blocking remover, injection of the chemical blocking remover into the natural gas pipeline is stopped; and after the first target duration, the natural gas pipeline is cleaned through a pipe cleaning device, and the chemical blocking remover containing dirt is discharged from the second end of the natural gas pipeline. According to the natural gas pipeline plug removal device, the dirt attached to the inner wall of the natural gas pipeline can be removed without cutting the natural gas pipeline, so that plug removal of the natural gas pipeline is achieved, and the plug removal efficiency of the natural gas pipeline is effectively improved.

Description

technical field [0001] The present application relates to the technical field of natural gas pipelines, in particular to a method for unblocking salt crystallization plugging of natural gas pipelines. Background technique [0002] During the production process of natural gas wells, formation liquid and natural gas will be carried into the natural gas pipeline together, while part of the liquid stays in the natural gas pipeline and adheres to the pipe wall. Due to the high salinity of the formation fluid, the liquid adhering to the pipe wall will generate a layer of solid compound (usually a salt compound, for example, it can be a salt crystal) on the pipe wall after the reaction. The natural gas pipeline is extremely prone to clogging. [0003] At present, after the natural gas pipeline is blocked, first, it is necessary to determine the location of the blockage in the natural gas pipeline; then, the pipe cutting treatment is carried out at the corresponding position, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/032B08B9/057
CPCB08B9/032B08B9/0321B08B9/0327B08B9/057
Inventor 蒋志马盠代娟魏俊吉徐梅沈武冬李萍唐诗何承宏李忠良宋立东贺茂国耿苗
Owner PETROCHINA CO LTD
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