Freeze soil area oil and gas pipeline monitoring method and system

A technology for oil and gas pipelines and permafrost areas, which is applied in the direction of measuring force, measuring devices, and measuring heat, and can solve problems such as the lack of mature monitoring technology, complex formation mechanism of frost heaving and thawing disasters, and different characteristics of permafrost

Active Publication Date: 2013-11-06
PIPECHINA SOUTH CHINA CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Freeze soil area oil and gas pipeline monitoring method and system
  • Freeze soil area oil and gas pipeline monitoring method and system
  • Freeze soil area oil and gas pipeline monitoring method and system

Examples

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Embodiment

[0091] Embodiment. This example is a kind of test method and system, and in the permafrost area that the thickness of seasonal frozen soil is 2m, and the frozen soil type is ice-rich and full of ice, the test is carried out, wherein the buried depth of the pipeline is 2m, and the diameter of the pipe body is 813mm, Wall thickness is 10mm, steel grade X65.

[0092] The overall composition of the oil and gas pipeline monitoring system in permafrost regions is as follows: figure 2 shown; the principle block diagram is shown in Figure 7 shown. A temperature sensor group composed of fiber grating temperature sensors 3, 4, 5 is installed on the surface of the oil and gas pipeline 2 in the permafrost region 1 and its surroundings, and a fiber grating water content sensor group composed of fiber grating water content sensors 6, 7, 8, 9 is installed around the oil and gas pipeline 2 For the water quantity sensor group, fiber grating displacement sensors 10 and 11 are installed on o...

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Abstract

The invention discloses a freeze soil area oil and gas pipeline monitoring method and system. The freeze soil area oil and gas pipeline monitoring method includes the steps of conducting monitoring on the temperatures and the moisture around pipelines and the displacement of a tube bodies through temperature sensor sets, moisture sensor sets and fiber bragg grating displacement sensor sets respectively, sending signals obtained through monitoring to a photoswitch (13) through optical cables (12), sending the signals to a lower computer (15) after the signals are demodulated by an interrogator (14), enabling the lower computer (15) to call self-programmed programs, control the photoswitch (13) and the interrogator (14), collect data and preprocess the data, transmitting the preprocessed data to a low-orbit satellite (17) through a satellite communication module (16), receiving the data through the low-orbit satellite (17) and forwarding the data to a satellite communication module (18), transmitting the received data to an upper computer (19) through the satellite communication module (18), analyzing and processing the data through the upper computer (19), and judging the safety condition of the pipelines to conduct damage forecasting. The freeze soil area oil and gas pipeline monitoring method and system are high in precision, high in stability and low in cost.

Description

technical field [0001] The invention is a method and system for monitoring oil and gas pipelines in permafrost regions based on fiber grating sensing technology, and relates to the technical fields of length measurement, temperature measurement, other types of 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 kil...

Claims

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Application Information

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IPC IPC(8): G01B11/02G01K11/32G01N21/00G01L1/00G01K11/3206
Inventor 谭东杰马云宾周琰宋宁许斌王禹钦熊敏余东亮冯毅
Owner PIPECHINA SOUTH CHINA CO
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