煤层气集输管网建模及优化研究

发布时间：2019-01-11 15:39

【摘要】：近年来,随着国民经济发展,人类对于能源的需求量越来越大,尤其是清洁能源的需求比重更是逐年上升,煤层气作为性能良好的清洁能源有了更为广阔的发展空间,并且煤层气因其储量丰富,开发程度尚低,成为了时下研究的热点。因此,本文以Realpipe油气管网仿真软件为工具,对沁水盆地煤层气田的集输管网优化问题进行了主要研究。通过查阅相关文献,在对课题的现状进行整体把握的基础上,本文从以下两大方向进行了进一步的研究:(1)在被制约的管段处敷设一根副管,在保证原管段压力不变,且进出站压力不变的情况下,增大管网的输气量;(2)在被制约的管段处增设加压站,保证在增大输气量的同时还能使管线压力和进出站压力满足条件。对于管网优化问题开展以下研究内容:首先,依据采集的煤层气田实地数据,在Realpipe管网仿真软件中建立模型,分析并找出制约集输管网运力的原因以及被制约的管段;其次,针对管段被制约的原因确定管段优化设计的方案,在被制约管段处敷设副管或增设加压站,并列出相应的数学模型和经济模型,为具体参数的计算提供依据;最后,运用遗传算法对两种方案分别进行分析、编程、计算,得出两种方案相应的改造参数,同时,为保证方案具备实际可实现性,本文还计算了改造管网增大输气量的投资费用作为参考。
[Abstract]:In recent years, with the development of national economy, the human demand for energy is increasing, especially the proportion of clean energy is increasing year by year. As a clean energy with good performance, coal bed methane has a broader development space. And because of its rich reserves and low level of development, coalbed methane has become a hot research topic. Therefore, this paper mainly studies the optimization of coalbed methane field in Qinshui Basin by using Realpipe simulation software. Based on the overall understanding of the current situation of the subject, this paper makes further research in the following two main directions: (1) laying a secondary pipe at the restricted section, which ensures that the pressure of the original section remains unchanged. Under the condition of constant pressure in and out of the station, the gas transmission rate of the pipe network will be increased. (2) the pressure station is added to the restricted section to ensure that the pipeline pressure and the inlet and outlet pressure can meet the conditions while increasing the gas output. The following research contents are carried out on the optimization of pipeline network: firstly, based on the field data of coalbed methane field, a model is established in Realpipe pipe network simulation software to analyze and find out the reasons that restrict the transportation capacity of gathering and transportation network and the restricted pipe section. Secondly, according to the reason that the pipe section is restricted, the optimal design scheme of the pipe section is determined, the auxiliary pipe is laid or the pressure station is added to the restricted pipe section, and the corresponding mathematical model and economic model are listed, which provides the basis for the calculation of the specific parameters. Finally, the genetic algorithm is used to analyze, program and calculate the two schemes, and the corresponding parameters of the two schemes are obtained. At the same time, in order to ensure that the scheme has the practical realizability, This paper also calculates the investment cost of improving the pipeline network to increase the gas transmission as a reference.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE863

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