泡沫排水采气影响因素研究

发布时间：2018-03-25 02:39

本文选题：发泡剂　切入点：表面活性剂　出处：《西安石油大学》2017年硕士论文

【摘要】：随着天然气产量减少,气体流速降低,产生井筒积液,天然气产量降低。在气井中气体携液需要超过一个最低速度,如果低于临界速度,那么大量水将积存在井筒里,导致气井产量下降甚至停产。通过研制适合气田的泡沫排水剂,并从工艺上重点探索解决泡排工艺,从而满足气田的开发需要。同时积液改变液体多相流区域使腐蚀速率增大。加入表面活性剂发泡可以改变流动区域增大天然气产量,并且可以减少CO_2和H_2S引起的腐蚀。在以往的基础上,优选采用动态泡沫实验装置,对发泡剂N3288、PBTO与J201进行了泡沫动态实验。发泡剂的筛选和物理性能测试在工业上有不同的方法,但是对于这些方法和物理性能还没有系统的研究和对比联系起来。本文通过动态泡沫试验:对不同温度,矿化度,不同比例的凝析油含量的盐溶液中的不同发泡剂的携液能力进行测试。测量发泡剂的物理化学性能包括,表面张力,密度,粘度与排液对携液的影响,建立了定量的相互作用关系模型,优选发泡剂。用动态泡沫试验研究缓蚀剂对泡沫排水量的影响,用电化学和挂片失重测试含发泡剂对缓蚀剂控制腐蚀效果的影响。通过上述实验复配出具有腐蚀抑制作用的发泡剂,实现了一剂多用的缓蚀发泡剂。
[Abstract]:As the natural gas production decreases, the gas flow rate decreases, the wellbore accumulates fluid, and the natural gas production decreases. In the gas well, the gas carries liquid at more than one minimum speed. If it is below the critical speed, a large amount of water will accumulate in the wellbore. The production of gas wells decreased or even stopped. By developing foam drainage agent suitable for gas fields, and exploring and solving the foam drainage process from the point of view of technology, At the same time, the corrosion rate increases by changing the liquid multiphase flow zone. Adding surfactant foaming can change the flow zone and increase the natural gas production. And it can reduce the corrosion caused by CO_2 and H2S. On the basis of the previous experiments, the dynamic foaming agent N3288TO and J201 were selected and tested by dynamic foaming apparatus. The screening of foaming agent and the testing of physical properties have different methods in industry. However, there is no systematic study and comparison between these methods and physical properties. The liquid carrying capacity of different foaming agents in salt solution with different proportion of condensate oil was tested. The physical and chemical properties of foaming agent were measured, including the effect of surface tension, density, viscosity and discharge on carrying liquid. A quantitative interaction model was established to select foaming agent. The effect of corrosion inhibitor on foam displacement was studied by dynamic foam test. The effect of foaming agent containing foaming agent on corrosion control effect of corrosion inhibitor was tested by electrochemical and weightlessness test.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE377

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