A plugging method for abandoned crude oil pipeline

Abstract

The invention discloses a plugging method for an abandoned crude oil pipeline, which comprises a high-pressure air pump vehicle, a ball-emitting cylinder, a ball-receiving cylinder, a PIG ball containing a signal transmitter, a signal receiver, a pipe pulling machine, a pump, a mixer, and a sealing The plugging method is as follows: after preliminary cleaning and wax removal of the abandoned pipeline, the secondary cleaning is carried out through the PIG ball; through the signal emitted by the PIG ball, the crude oil pipeline is cut into several sections to be processed according to the buried depth and high point; The machine digs and sets up exploration pits at subsection points; PIG balls are installed in each section of the pipeline, and holes are opened on both sides of the PIG balls with a pipeline hole opener; The center of the processing pipe is fed into the guide rod of the pipe drawing machine; the filler is injected into the guide rod of the pipe drawing machine with a pump, and the inner pipe of the pipe drawing machine is withdrawn segment by section until the filler fills the entire crude oil pipeline to be treated; beneficial effect: reduce The cost of plugging is reduced, the plugging is thorough, the difficulty of construction is reduced, and the accuracy of construction is improved.

Description

technical field [0001] The invention relates to the field of plugging of abandoned crude oil pipelines, in particular to a plugging method of abandoned crude oil pipelines. Background technique [0002] In recent years, many abandoned crude oil pipelines have restricted the pace of urbanization. In the process of urban pipeline network transformation, abandoned pipelines are likely to be located under urban expressways and under buildings. Excavation and removal are difficult and costly. Pipeline companies Also only leave the discarded pipes where they are. Abandoned pipes are easy to endanger the environment. The main reason is that the medium in them is difficult to be completely removed. As the corrosion intensifies, toxic, harmful, flammable and explosive media are released into the environment, becoming a safety hazard. At present, the overdue service of my country's crude oil pipelines and the disposal of abandoned pipelines have become common problems. [0003] The ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the inaccuracy of the drilling position in the landfill of the traditional abandoned crude oil pipeline, the unrealistic landfill, the high cost of crude oil pipeline treatment, and after the abandoned crude oil pipeline is cleaned by various schemes, many volatile, toxic and harmful substances will still remain on the inner wall In view of potential safety hazards, the present invention provides a PIG ball with a built-in signal transmitter to accurately record the buried direction and buried depth of the pipeline while cleaning and uploading, and adopts a segmented processing method for blocking, with low cost and high efficiency. High, low construction difficulty, the plugging process is based on positioning data, and the construction accuracy is high. The invention provides a plugging method for abandoned crude oil pipelines

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