Pipeline state detection device and detection method

Abstract

The embodiment of the invention provides a pipeline state detection device and a pipeline state detection method. The pipeline state detection device comprises a laser, a TeraHertz wave detection probe and an analysis device, wherein the laser is used for emitting laser pulses; the TeraHertz wave detection probe is arranged around a pipeline and is connected with the laser through a first optic fiber transmission device and used for receiving laser pulses emitted by the laser to generate TeraHertz waves and transmit the TeraHertz waves towards the outer peripheral wall of the pipeline, and is also used for receiving the reflected TeraHertz waves; the analysis device is connected with the TeraHertz wave detection probe through a second optic fiber transmission device and used for receiving and analyzing reflected TeraHertz waves transmitted by the TeraHertz waves detection probe to obtain the state information of the pipeline. According to the pipeline state detection device and the pipeline state detection method provided by the embodiment of the invention, the leakage point of the pipeline can be accurately positioned, and the perforation depth, position and size of the leakage point can be accurately detected. Besides, in the pipeline state detection device and the pipeline state detection method provided by the embodiment of the invention, the optic fiber transmission is adopted, the onsite adaptability is reinforced, and the detection of the pipeline leakage is more reliable and can resist the references of various severe environments.

Description

Technical field [0001] The invention relates to the detection of pipeline state, in particular to a detection device and a detection method for the state of downhole tubing using terahertz time-domain spectroscopy technology. Background technique [0002] Oil and gas transportation is an important part of the petroleum industry. Among the many transportation methods, pipeline transportation has the characteristics of stability and continuity, good safety, large transportation volume, quality assurance, and energy-saving economy. It has become the preferred method of oil and gas transportation. In addition, oil and gas transportation pipelines are generally laid underground, occupy a small area, and can adapt to various harsh climatic environments. Therefore, pipeline transportation is widely used in the actual production and transportation of oil and natural gas. [0003] With the rapid development of oil pipeline transportation around the world, effective detection of the actual...

AI Technical Summary

Problems solved by technology

However, the existing detection methods have many deficiencies in sensitivity, accuracy and reliability, especially for the real-time online detection of downhole pipeline oil leakage accidents.

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