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
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[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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