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Experiment system for pipeline blockage detection with pressure wave method

A technology of clogging detection and experimental system, applied in the direction of using sonic/ultrasonic/infrasonic waves to analyze solids, instruments, and analytical materials, etc., can solve problems such as difficulty in implementation, high cost, and impact on oil and gas production, and achieve the effect of easy replacement and easy observation.

Inactive Publication Date: 2019-03-29
DALIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

But in fact, the propagation characteristics of pressure waves in oil and gas pipelines, especially the research on key parameters such as propagation velocity and attenuation coefficient are not very mature, and the reflection characteristics of pressure waves when encountering different types and shapes of blockages also need to be studied urgently However, direct experimental research on actual oil and gas pipelines has problems such as affecting oil and gas production, high cost, and difficulty in implementation. In addition, the pressure wave blockage detection experiment requires a certain length and pressure of the pipeline. There are often space constraints

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  • Experiment system for pipeline blockage detection with pressure wave method

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Embodiment 1

[0020] This embodiment provides an experimental system for pipeline blockage detection by pressure wave method, including a main pipeline 13 placed on a test bench, and the main pipeline 13 includes a plurality of straight pipes and a plurality of curved pipes. The straight pipes are detachably connected by elbows to form a spiral structure; the lengths and curvature radii of the multiple elbows are the same, and they are connected with the straight pipes through the threaded plane sealing quick joint, which is convenient for replacement. The radius of curvature can ensure that the propagation shape of the pressure wave does not change significantly; the material of the main pipeline 13 is 316L stainless steel. The main pipeline 13 is provided with a simulated blocking pipe section 14, and pipelines with different lengths, inner diameters, shapes and materials can be set to replace part of the main pipeline as the simulated blocking pipe section 14 as required. The distance be...

Embodiment 2

[0027] This embodiment provides the operation method of the experimental system of the pressure wave method pipeline blockage detection experiment:

[0028] a. Experiment of pressure wave propagation characteristics

[0029] 1. Gas injection process: close the solenoid valve 18 and the needle valve 19, open the gas cylinder group 1, adjust the large flow pressure reducing valve 2 and the gas flow control valve 6, and inject gas into the main pipeline 13 at a certain speed to reach the experimental pressure After that, keep the gas cylinder group 1 open, and keep the large flow pressure reducing valve 2 open;

[0030]2. Miscible flow process: open and adjust the needle valve 19 to make the gas in the main pipeline 13 flow at the experimental flow rate, then turn on the injection pump 8, and adjust the injection pump 8 to inject water into the main pipeline 13 according to the set flow rate until the gas The two-phase flow of water is stable;

[0031] 3. The process of pressur...

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Abstract

The invention discloses an experiment system for the pipeline blockage detection with a pressure wave method, and belongs to the technical field of pipeline blockage detecting experiment. The system comprises a main pipeline, a gas flow meter, a gas flow control valve, a surge tank, a gas cylinder set, a large flow pressure reducing valve, and further comprises a mixer, a liquid flow meter, a liquid flow control valve, and a water injection pump. The water injection pump is also connected to a water tank through a pipeline. A Y-shaped branch pipe is connected to the outlet of the outer ring ofthe main pipe, wherein the Y-shaped branch pipe is connected with a solenoid valve on one branch, and a needle valve is connected to the other branch. A simulated blockage pipe section is arranged between the main pipeline, and a transparent pipe section is connected to the outer ring pipe of the main pipeline. The invention can realize the experiment of pressure wave propagation characteristic experiment safely under laboratory conditions and the blockage detection experiment of different types of blockage sections.

Description

technical field [0001] The invention relates to the technical field of pipeline blockage detection experiments, in particular to an experimental system for pipeline blockage detection by a pressure wave method. Background technique [0002] With the gradual depletion of global fossil energy and the deepening of the development and utilization of oil and gas resources, the development of oil and gas resources by human beings has gradually shifted from land to ocean. Therefore, as the most important way of oil and gas transportation, the mileage of submarine pipelines is also increasing. In the development of oil and gas, the operation of submarine pipelines is directly related to the safety of offshore oil and gas fields. During the operation of pipelines, the pipeline may be blocked due to the accumulation of solids such as paraffin and asphalt, and the formation of natural gas hydrate solids. [0003] When a pipeline blockage occurs, it is an increasingly urgent need to qui...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/11
CPCG01N29/04G01N29/11G01N2291/015
Inventor 宋永臣储佳伟刘瑜赵佳飞刘卫国李星泊
Owner DALIAN UNIV OF TECH
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