苏里格气田污水处理站工艺设计

发布时间：2018-07-03 19:13

本文选题：苏里格气田 + 污水处理站　；参考：《西安石油大学》2015年硕士论文

【摘要】：随着苏里格气田的规模开发,低压、低产、产水气井已经越来越多,但由于产量低不能完全满足气井携液生产的要求,井底及井筒产生积液,导致气井无法正常生产。本课题针对苏里格气井产水状况和开发工艺特点,进行苏里格气田污水处理站工艺设计。目前,苏里格气田已进入稳定开发阶段,气田产出污水量不断加大,由于其含有大量的有机物,又溶解了不同程度的硫化氢、二氧化碳等酸性气体,如果不能得到合理处理和排放,不仅会对处理设施、回注系统产生腐蚀或堵塞,使气田井筒管串和地面设施无法正常运行,影响气田安全生产,而且还会因地层堵塞而引起受纳水体的潜移性侵害,污染生态环境。因此,开展苏里格气田污水处理综合研究,对于改善气田生产能力、提高气田开发寿命、降低生产运行成本、保护生态环境等具有重要的现实意义和广阔的应用前景。通过该论文的研究,分析苏里格气田第三处理厂污水性质特点,优化含醇污水和低含醇污水预处理工艺,使污水预处理工艺和气田现场生产实际相适应;对甲醇回收单元的操作参数进行优化,并进行现场实验,使甲醇回收装置性能满足现场生产工艺和性能设计要求。保证甲醇回收单元设备运行正常,产品甲醇合格。最后本文针对苏里格气田污水处理问题提出了一种新的方法,通过分析气田含油污水的达标排放指标,针对气田含油污水的主要处理物质为石油类,悬浮物,COD污染物,采用膜分离-催化氧化工艺对这些物质处理。通过试验,分析分离膜的最佳工作条件。设计气田含油污水处理系统,分析膜分离-催化氧化处理工艺各流程对含油污水的处理作用。对含油污水处理系统采取了防爆措施,保证污水处理系统和天然气站的安全。
[Abstract]:With the large-scale development of Sulige gas field, there are more and more wells with low pressure, low production and water gas production. However, due to the low production rate can not fully meet the requirements of gas well fluid production, the bottom hole and wellbore produce fluid accumulation, which leads to the gas well can not be produced normally. According to the water production condition and development process characteristics of Sulige gas well, the process design of sewage treatment station in Sulige gas field is carried out. At present, Sulige gas field has entered a stable stage of development, and the amount of sewage produced in the gas field is increasing. Because it contains a large amount of organic matter and dissolves acid gases such as hydrogen sulfide and carbon dioxide to varying degrees, If it is not properly treated and discharged, it will not only cause corrosion or blockage to the treatment facilities and injection system, but also make the wellbore string and surface facilities of the gas field unable to operate normally, which will affect the safe production of the gas field. Moreover, it will cause potential invasion of the receiving water and pollute the ecological environment because of the formation blockage. Therefore, the comprehensive research on sewage treatment in Sulige gas field has important practical significance and broad application prospect for improving gas field production capacity, increasing gas field development life, reducing production operation cost, protecting ecological environment and so on. Through the research of this paper, the characteristics of sewage in the third treatment plant of Sulige gas field are analyzed, and the pretreatment process of wastewater containing alcohol and low alcohol is optimized, so that the pretreatment process of sewage and the actual production of gas field can be adapted. The operation parameters of methanol recovery unit were optimized and field experiments were carried out to make the performance of methanol recovery unit meet the requirements of field production process and performance design. To ensure the methanol recovery unit equipment operation is normal, the product methanol qualified. Finally, this paper puts forward a new method for sewage treatment in Sulige gas field. By analyzing the discharge target of oil-bearing sewage in gas field, the main treatment material of oil-bearing sewage in gas field is petroleum, suspended substance is COD pollutant. These substances were treated by membrane separation-catalytic oxidation process. The optimum working conditions of the separation membrane were analyzed by experiments. The treatment system of oil-bearing sewage in gas field was designed, and the treatment effect of membrane separation and catalytic oxidation process on oily sewage was analyzed. Explosion-proof measures are adopted to ensure the safety of sewage treatment system and natural gas station.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X741

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