天然气矿场集输系统用能评价技术研究及软件开发

发布时间：2018-06-04 06:50

本文选题：天然气矿场集输系统 + 用能分析　；参考：《西南石油大学》2015年硕士论文

【摘要】：天然气矿场集输系统是由井场、集气分离站、增压站、集输管网和气田水回注站等用能环节按照一定的拓扑结构衔接而成的复杂用能系统,是气田生产中的主要用能环节之一。现有集输系统用能分析及评价技术处于单体设备分析、局部工艺流程调整和区域综合节能层面上,没有从过程系统节能控制角度形成一套指导集输系统用能测试、分析及评价的体系与方法。本文通过建立天然气矿场集输系统用能分析模型,构建用能评价指标体系,对系统用能状况进行分析及评价,主要研究工作如下： (1)对国内外过程系统能量分析方法、油气集输系统用能评价、节能降耗措施、用能分析及评价软件技术研究现状进行调研。总结当前研究存在没有针对天然气集输系统、分析方法单一、指标体系不完整等问题,分析天然气与原油集输系统在输送介质、集输流程、用能设备等方面存在较大差异； (2)对一般性天然气矿场集输系统用能环节进行界定,采用黑箱、白箱模型对加热炉、集输管道、燃气发动机、压缩机、泵机组、分离器、换热器等用能设备进行能量平衡和(?)平衡分析,并对泵和压缩机内部能量损失进行重点分析。建立用能分析的评价指标有：能量利用率、(?)效率、热力学完善度等,用能分析的分析指标有：能量损失系数、(?)损失系数等； (3)结合天然气矿场集输系统工艺流程及实际用能特点,对传统“三环节”过程系统用能分析法进行改进,将集输系统划分为能量转换、传输、利用和回收四个环节,提出具有一般性的集输系统用能过程“组合模块多环节分析法”,建立各用能环节物理、数学模型及分析指标； (4)构建包含井场、集气分离站、增压站、集输管网及气田水回注站的二级指标体系与评价准则,利用改进层次分析法确定各级指标权重,建立集输系统用能模糊评价模型； (5)建立集输系统用能测试数据库,采用C#编程语言开发“天然气矿场集输系统用能分析及评价软件”。实现用能测试数据管理、设备用能分析、集输系统用能分析、调整改造决策、用能预测、指标权重计算、集输系统用能模糊评价等功能。软件具有一定的通用性和开放性,能够根据具体集输系统实际用能环节的不同进行模块组合分析及评价； (6)以A气田矿场集输系统为例,对设备及系统进行用能分析,计算集输系统能量转换、传输、利用及回收环节效率,分析设备及集输系统用能构成和能量流向,对系统现有用能水平进行模糊评价,确定集输系统节能降耗的切入点。
[Abstract]:Natural gas mine gathering and transportation system is a complex energy use system which is composed of well field, gas gathering separation station, pressurization station, gathering and transportation network and gas field water injection station. It is one of the main energy use links in gas field production. The existing energy use analysis and evaluation technology of gathering and transportation system is on the level of single equipment analysis, local process flow adjustment and regional comprehensive energy saving, and has not formed a set of guidance for energy use test of gathering and transportation system from the point of view of energy saving control of process system. System and method of analysis and evaluation. In this paper, the energy use analysis model of gas gathering and transportation system is established, and the energy use evaluation index system is constructed. The main research work is as follows: 1) the research status of process system energy analysis methods, energy use evaluation, energy saving and consumption reduction measures, energy use analysis and evaluation software technology of oil and gas gathering and transportation system at home and abroad are investigated. It is concluded that there are some problems in the current research, such as the lack of natural gas gathering and transportation system, the single analysis method, the incomplete index system, and so on. The differences between natural gas and crude oil gathering and transportation systems in transportation medium, gathering and transportation flow, energy using equipment are analyzed. (2) to define the energy consumption of general natural gas mine gathering and transportation system, and to use black box and white box model to balance the energy of heating furnace, gathering pipeline, gas engine, compressor, pump unit, separator, heat exchanger and so on. Balance analysis, and the internal energy loss of the pump and compressor analysis. The evaluation indexes for energy use analysis are: energy utilization ratio. Efficiency, thermodynamic perfection and so on. The analysis indexes of energy use analysis include: energy loss coefficient. Loss coefficient, etc.; (3) combining with the process flow of gathering and transporting system of natural gas mine field and the characteristics of practical energy use, the traditional "three links" process system energy use analysis method is improved, and the gathering and transportation system is divided into four links: energy conversion, transmission, utilization and recovery. In this paper, a general method of multi-link analysis of combinatorial modules for energy use process of gathering and transportation systems is proposed, and the physical, mathematical models and analysis indexes of each energy use link are established. The second grade index system and evaluation criterion including well site, gas gathering separation station, booster station, gathering pipeline network and gas field water injection station are constructed. The index weight of all levels is determined by using improved analytic hierarchy process (AHP), and the fuzzy evaluation model of gathering and transportation system energy is established. The data base of energy use test of gathering and transportation system is established, and the software of energy use analysis and evaluation of natural gas mine gathering and transportation system is developed by C # programming language. The functions of energy use test data management, equipment energy analysis, energy use analysis of gathering and transportation system, adjustment and transformation decision, energy use prediction, index weight calculation, fuzzy evaluation of energy use of gathering and transportation system are realized. The software has certain generality and openness, it can analyze and evaluate the module combination according to the actual energy consumption of the specific gathering and transportation system. Taking the gathering and transporting system of A gas field as an example, the energy use analysis of equipment and system is carried out, the energy conversion, transmission, utilization and recovery efficiency of gathering and transportation system are calculated, and the energy consumption composition and energy flow direction of equipment and gathering and transportation system are analyzed. The current energy use level of the system is evaluated by fuzzy method, and the starting point of energy saving and consumption reduction of gathering and transportation system is determined.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE863

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