音速雾化器排水采气研究

发布时间：2018-04-01 09:43

本文选题：排水采气　切入点：雾化　出处：《西安石油大学》2014年硕士论文

【摘要】：在天然气开采过程中，随着开采时间的延续，气井井底压力和天然气流动速度逐步降低，致使气藏中的产出水或凝析液不能随天然气流携带出井筒，从而滞留在井筒中。这些液体在一段时间内聚集于井底，形成液柱，对气藏造成额外的静水回压，导致气井自喷能量持续下降。通常，如果这种情况持续下去，井筒中聚集的液柱会将气体压死，导致气井停产。这种现象便称之为“气井积液”。气井积液会严重影响天然气的生产，必须及时排除。为了解决气井井筒内积液问题，国内外展开了较多的研究，这些方法和技术各有长处和短处，对苏里格气田来说，还是存在很多急待解决的问题，还需要进一步深入研究，为了保证气田的生产和发展，需要开发出经济，高效的排水采气新方法和新技术。近几年出现了许多排水采气的新技术、新工艺，这些新技术各有自己的特点和适用条件。这些新技术和新工艺有些已经在现场取得了成功，有些还是在试验阶段。从国内外的众多的排水采气技术中可以看到；各种技术各有长处，针对不同气井的工作条件采用不同的排液方法。也可以看到大多数的研究都是按着这样的方向去努力；就是降低天然气和水的混合物密度，增加天然气在通道内流速，使得天然气在流动过程中依靠自身能量就能够携带出水来。当气层自身的能量不足时，才去考虑动用外部能量去协助排水。为了制定最佳排水采气方案，就需要了解每口气井的生产参数；即井底压力、沿程压力分布（沿井筒深度的压力分布是非线性的）和温度分布、井筒流态和含水率等。需要建立一些数学模型去寻求气体排液的临界流量、计算临界液滴大小和分布、分析流型变化等理论分析研究最佳排液流量，最小排液气流量以及整个流动过程的各个流态降低天然气和水的混合物密度是最节省天然气自身能量的排水方法之一，也是最方便排水的方法。发明音速喷管气体加速方法，实现液体雾化排出。是气井排水采气的一种新方法，也是一种新技术。开发新型液体雾化装置，可以实现最佳携液工作条件发明音速喷管气体加速泵，实现液体雾化。在理论研究和软件设计基础上，研制出音速喷管气体加速泵，实现雾化排水，形成有自主知识产权的发明，实现井筒排水的高效率和经济性。音速雾化器排水采气技术研究项目通过理论研究和气田实际应用试验研究，能够实现项目提出的研究目标。将成为气田排水采气新方法，在生产中发挥重要作用。
[Abstract]:In order to solve the problem of gas accumulation in the gas well , the gas accumulation in the well bore will cause the gas to die and cause the gas well to shut down . In order to solve the problem of gas accumulation in the gas well bore , there are many problems to be solved . In order to ensure the production and development of gas field , it is necessary to develop a new economical and efficient method for drainage and gas production and new technology .

In recent years , there have been a number of new technologies and new technologies for drainage and gas production . These new technologies have their own characteristics and application conditions . Some of these new technologies and processes have been successful in the field , some are still in the test phase .

can be seen from a wide variety of drainage gas production technologies at home and abroad ;
Various technologies have different strengths , and different liquid drainage methods are adopted for the working conditions of different gas wells . It is also possible to see most of the research work in such a direction ;
This is to reduce the mixture density of natural gas and water , increase the flow rate of natural gas in the channel , so that the natural gas can carry water from its own energy during the flowing process . When the energy of the gas layer itself is insufficient , the external energy is taken into consideration to assist drainage .

In order to establish the best drainage plan , it is necessary to know the production parameters of each well .
It is necessary to establish some mathematical models to find the critical flow rate of gas drainage , calculate the critical droplet size and distribution , analyze the flow pattern change and so on , study the best discharge flow , the minimum discharge gas flow rate and the flow states of the whole flow process .

Reducing the mixture density of natural gas and water is one of the most effective ways to save natural gas ' s own energy . It is also the most convenient way to drain water .

The invention develops a novel liquid atomization device , which can realize the optimal liquid carrying working condition and the sonic nozzle gas accelerator pump to realize liquid atomization , and develops a sonic nozzle gas accelerator pump based on theoretical research and software design , realizes atomization and drainage , forms the invention with independent intellectual property , and realizes the high efficiency and economical efficiency of the drainage of the wellbore .

Through theoretical research and practical application test of gas field , the research project of sonic atomizer drainage and gas production technology can realize the research object proposed by the project . It will become a new method of gas field drainage and gas production , which plays an important role in the production .

【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TE377

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