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Research on Earth Temperature Field Formed by the Leakage of the Petroleum & Nature-gas Pipeline

Author: YuYaHui
Tutor: YuanChaoQing
School: Daqing Petroleum Institute
Course:
Keywords: Simulation calculation Oil and gas pipelines leakage Soil temperature field Three-dimensional model Coupling
CLC: TE832
Type: Master's thesis
Year: 2010
Downloads: 84
Quote: 1
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Abstract


With the the extensive application of of the of pipeline transport in the the in the the petroleum industrial, pipeline aging, the leakage accident of the corrosion and other natural or man-made reasons for lead to of the oil and gas pipelines frequent occurrence of, the the lives and property of and survival environment of the that make people's to caused by the a huge the threat of, Therefore, the pipeline leakage detection technology become the the The pipeline safety run that the, the the an important guarantee for of of to reduce the economic losses. Are already available in the the current the of foreign petroleum transport industrial in the the. Adopt the the the the application of leak by the optical fiber temperature sensing technology detection pipeline, In In order to to so that the fiber optic sensors in order to the a a minimum of of the cloth point to to obtain the greater the monitoring of the scope of, need to research the the of the changes in law of of of the of soil temperature field in the before and after the leak of the oil and gas pipelines of the buried, for the the reasonable cloth point to to provide the the theoretical basis for. Of this article in order to the oil, gas pipeline the surrounding soil temperature field as the research object, in the the inspection of the the basis of of the a large number of literature data on the, to carry out a the the the work of of a few of the following aspects of: 1, on the the to the the porous medium theory, of Multiphase Flow in the basic theory of to do the the detailed introduction, consider the the soil porous the non-saturated sexual of the the medium, study the between the the in the fluid of of the fluid with the the soil as well as soil of pore the the heat and mass transfer mechanism of, combined with the method of FLUENT processing the porous medium of the, is given the the of Multiphase Flow in model of the the the model and fluid of of the of the soil porous medium. 2, on the the in the the the basis of of the the our predecessors on the the buried pipeline the surrounding soil temperature field research, is given the pipeline leak the the the former the surrounding soil temperature field to simplify the the the physical model and the heat transfer model, carried out on the the the seepage field and temperature field in the after the the pipeline leak the analysis of, to consider the soil the porous media issue, the establishment of the the mathematical model in the after the the pipeline leak, and to the establishment of the a reasonable standard of the boundary conditions. 3, the establishment of the the three-dimensional experimental simulation model, to settings the simulation parameters, and, respectively, on the a three kinds of of different pipeline the the case of of the conveying medium carried out simulation calculation, will be simulation the results of carried out to the with the experimental the results of comparative analysis of, verify the a the the correctness of of the model. Analog the the of crude oil of the a four kinds of of different hydrous rate of leak the the of the changes in the situation of of the soil temperature field, to analysis of the affect the of the of the water content of crude oil rate of on the the the the soil temperature field of the. 4, the establishment the of actual oil transmission engineering simulation model of, to conducted the Simulation Calculation, the establishment the the function relation between in the leakage amount correlation with soil temperature affected zone. The establishment of the natural gas around the pipeline soil temperature field model, and to analysis of the the the impact of of the of the the rule of changes and pressure of of the soil temperature field on the the heat-affected zone of the temperature field in the after the the leak of the natural gas pipeline. The studies have shown that the the the changes in trend of of the soil temperature field in the before and after the leak of crude oil and natural gas pipeline is is basic consistent, show that the that the by the the establishment of the mathematical model has a general-purpose sexual. The research was supported by the the soil temperature after the the leak field affected by water content of crude oil rate of, the speed of the leak, the the impact of law of of the natural gas conveying pressure, for the to the the the of the reasonable cloth of point of of the fiber-optic sensor provide a theoretical basis.

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CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas storage and transportation > Oil and Gas Transmission and Transport > Pipeline
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