Freeze soil area oil and gas pipeline monitoring method
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 the problems of complex formation mechanism of frost heaving and thawing disasters, different characteristics of permafrost, and no mature monitoring technology.
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[0091] Example. This example is a test method, and the test was carried out in a frozen soil area with a seasonal frozen soil thickness of 2 m and a frozen soil type of ice-rich and saturated ice, where the pipeline was buried in a depth of 2 m, the diameter of the pipe body was 813 mm, and the wall thickness was 813 mm. 10mm, steel grade X65.
[0092] The overall composition of the oil and gas pipeline monitoring system in permafrost areas is as follows: figure 2 shown; the schematic diagram is shown in Figure 7 shown. A temperature sensor group composed of fiber grating temperature sensors 3, 4, and 5 is installed on the surface of and around the oil and gas pipeline 2 in the frozen soil area 1, and a temperature sensor group composed of fiber grating water content sensors 6, 7, 8, and 9 is installed around the oil and gas pipeline 2. In the water sensor group, on the side of the oil and gas pipeline 2, the fiber grating displacement sensors 10 and 11 are installed. All ...
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