Freeze soil area oil and gas pipeline monitoring system

Abstract

The invention discloses a freeze soil area oil and gas pipeline monitoring system based on the fiber bragg grating sensing technology. Temperature sensor sets are arranged on the surfaces of oil and gas pipelines (2) in a freeze soil area and around the oil and gas pipelines (2) in the freeze soil area, moisture sensor sets are arranged around the oil and gas pipelines (2), fiber bragg grating displacement sensor sets are arranged on one side of the oil and gas pipelines (2), all sensors are connected in series in a welding mode and are led into a monitoring station through optical cables (12), the optical cables (12) are connected with a photoswitch (13), the photoswitch (13) is connected with a fiber bragg grating interrogator (14), the fiber bragg grating interrogator (14) is connected with a lower computer (15), data preprocessed by the lower computer (15) are transmitted to a low-orbit satellite (17) through a satellite communication module (16), data are forwarded by the low-orbit satellite (17) to a satellite communication module (18), and received data are transmitted by the satellite communication module (18) to an upper computer (19) and analyzed and processed by the upper computer (19). The freeze soil area oil and gas pipeline monitoring system is high in precision, high in stability and low in cost.

Description

technical field [0001] The invention relates to an oil and gas pipeline monitoring system in permafrost regions based on fiber grating sensing technology, and relates to the technical fields of length measurement, temperature measurement, other types of excluding measurement, general control systems and pipeline systems. Background technique [0002] Frozen soil is a special kind of soil, the temperature is negative temperature or zero temperature, and the soil containing ice is called permafrost. According to the length of the frozen state of the soil, frozen soil can generally be divided into short-term frozen soil (a few hours to half a month), seasonal frozen soil (half a month to several months) and permafrost (more than two years). my country's permafrost is very developed. The permafrost area is about 2.11 million square kilometers, accounting for 23% of my country's total land area and ranking third in the world. The area of ​​permafrost is about 5.14 million square ...

AI Technical Summary

Problems solved by technology

[0007] Although domestic and foreign pipeline operators have taken active measures to deal with frost heaving and thawing disasters in permafrost regions, the formation mechanism of frost heaving and thawing disasters is very complicated, and the characteristics of permafrost in different regions are different. There is no mature monitoring technology that can monitor the impact of frost heaving and thawing disasters on pipelines

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