天然气地下盐穴储气库技术研究

【作者】 涂洋；

【导师】 蒋洪；

【作者基本信息】 西南石油学院 ， 油气储运工程， 2005， 硕士

【摘要】 本文通过对国内外天然气地下盐穴储气库库址选择的调研分析,确定了天然气地下盐穴储气库的库址选择原则。采用模糊综合评判方法,按照库址选择的原则对盐穴储气库的库址优选建立了一套综合的评价体系。并采取模糊层次分析法对专家打分权重进行修正,权重确定后,应用广义有序加权平均算子对各方案的模糊语言评估信息进行集结,最后提出了一种基于模糊语言评估和广义有序加权平均算子对盐穴储气库多属性决策选址问题的解决方法。然后运用该法针对算例进行了库址优选。 在热力学和流体力学理论的基础上建立了盐穴储气库调峰采气中盐腔气体的温度和压力求解模型,该模型利用传热系数对理想情况的盐腔温度进行修正得到与工程实际经验接近的计算结果;为了求解更多参数弥补盐穴储气库调峰采气中盐腔气体的温度和压力求解模型的不足建立了注采气循环中盐腔的简化动态模型;建立了盐腔内实际存储气体量的计算模型以对盐穴储气库采气后进行实际气体量的盘存和盘存误差分析。然后本文利用相关文献中的数据和实例进行了数值模拟与分析。 在确定了盐穴储气库建库设计原则的基础上,采用模糊综合评判方法对盐穴地下储气库设计方案进行了优选,并选用国内金坛盐穴储气库某单腔的设计数据进行了实例分析,分析表明本文所提出的基于模糊语言评估和广义有序加权平均算子的模糊综合评判法优选储气库建库设计方案具有一定的可行性。 本文在用模糊综合评判方法对盐穴储气库库址和建库设计方案优选、对盐穴储气库采气过程中的温度和压力求解以及盐穴储气库采气后的盘存方面都有创新。更多还原

【Abstract】 By researching the site selecting of underground salt cavity in natural gas storage service both domestically and abroad this paper confirms a series of site selective preference principles of underground salt cavity natural gas storage. Firstly, by refering to the selective preference principles confirmed this paper adopts syntheses judgment means of fuzzy mathematics to set up a general judgment system. Secondly, this paper uses fuzzy analytic hierarchy process to correct the grades offered by the experts. Thirdly, using GIOWA arithmetic operators to calculate the fuzzy evaluating information. this paper summarizes a solution method to the salt cavity gas storage site selecting with multiple attribute decision making basing on fuzzy language evaluation and GIOWA arithmetic operators. After giving the theory of preferring the site this paper analyses a typical example using the method given above.Firstly, on the basis of thermodynamics and hydrodynamics this paper constructs the temperature and pressure effect calculation model in peak shaving withdralals of the salt cavity natural gas storage, which uses diathermanous coefficient to correct the temperature calculated from ideal model so that the result can be close to the actual observed temperature. Secondly, to calculate more parameters and make up the disadvantages of the temperature and pressure effect calculation model this paper constructs the simplified dynamic changing model of salt cavity in withdrawal and fill. Thirdly, this paper constructs the inventory verification model in salt cavity storage to verify the inventory in salt cavity storage. After the models being supplied with, this paper adopts some data and examples and numerically simulates and analyzes these examples by above models.After confirming the principles of the salt cavity gas storage constructing design scheme, this paper adopts syntheses judgment means to prefer the schemes, and analyzes the example of domestical JinTan salt cavity gas storage design data, the analysis demonstrates that using the syntheses judgment means to prefer the design schemes basing on fuzzy language evaluation and GIOWA arithmetic operators is feasible.This paper’s innovations are laid in adopting syntheses judgment means to preferthe salt cavity gas storage site and constructing design scheme, and the temperature and pressure effect calculation model in peak shaving withdralals of the salt cavity natural gas storage, and the inventory verification model in salt cavity storage<.更多还原