音速霧化器排水采氣研究
本文選題:排水采氣 切入點:霧化 出處:《西安石油大學(xué)》2014年碩士論文
【摘要】:在天然氣開采過程中,隨著開采時間的延續(xù),氣井井底壓力和天然氣流動速度逐步降低,致使氣藏中的產(chǎn)出水或凝析液不能隨天然氣流攜帶出井筒,從而滯留在井筒中。這些液體在一段時間內(nèi)聚集于井底,形成液柱,對氣藏造成額外的靜水回壓,導(dǎo)致氣井自噴能量持續(xù)下降。通常,如果這種情況持續(xù)下去,井筒中聚集的液柱會將氣體壓死,導(dǎo)致氣井停產(chǎn)。這種現(xiàn)象便稱之為“氣井積液”。氣井積液會嚴(yán)重影響天然氣的生產(chǎn),必須及時排除。為了解決氣井井筒內(nèi)積液問題,國內(nèi)外展開了較多的研究,這些方法和技術(shù)各有長處和短處,對蘇里格氣田來說,還是存在很多急待解決的問題,還需要進一步深入研究,為了保證氣田的生產(chǎn)和發(fā)展,需要開發(fā)出經(jīng)濟,高效的排水采氣新方法和新技術(shù)。 近幾年出現(xiàn)了許多排水采氣的新技術(shù)、新工藝,這些新技術(shù)各有自己的特點和適用條件。這些新技術(shù)和新工藝有些已經(jīng)在現(xiàn)場取得了成功,有些還是在試驗階段。 從國內(nèi)外的眾多的排水采氣技術(shù)中可以看到;各種技術(shù)各有長處,針對不同氣井的工作條件采用不同的排液方法。也可以看到大多數(shù)的研究都是按著這樣的方向去努力;就是降低天然氣和水的混合物密度,增加天然氣在通道內(nèi)流速,使得天然氣在流動過程中依靠自身能量就能夠攜帶出水來。當(dāng)氣層自身的能量不足時,才去考慮動用外部能量去協(xié)助排水。 為了制定最佳排水采氣方案,就需要了解每口氣井的生產(chǎn)參數(shù);即井底壓力、沿程壓力分布(沿井筒深度的壓力分布是非線性的)和溫度分布、井筒流態(tài)和含水率等。需要建立一些數(shù)學(xué)模型去尋求氣體排液的臨界流量、計算臨界液滴大小和分布、分析流型變化等理論分析研究最佳排液流量,最小排液氣流量以及整個流動過程的各個流態(tài) 降低天然氣和水的混合物密度是最節(jié)省天然氣自身能量的排水方法之一,也是最方便排水的方法。發(fā)明音速噴管氣體加速方法,實現(xiàn)液體霧化排出。是氣井排水采氣的一種新方法,也是一種新技術(shù)。 開發(fā)新型液體霧化裝置,可以實現(xiàn)最佳攜液工作條件發(fā)明音速噴管氣體加速泵,實現(xiàn)液體霧化。在理論研究和軟件設(shè)計基礎(chǔ)上,研制出音速噴管氣體加速泵,實現(xiàn)霧化排水,形成有自主知識產(chǎn)權(quán)的發(fā)明,實現(xiàn)井筒排水的高效率和經(jīng)濟性。 音速霧化器排水采氣技術(shù)研究項目通過理論研究和氣田實際應(yīng)用試驗研究,能夠?qū)崿F(xiàn)項目提出的研究目標(biāo)。將成為氣田排水采氣新方法,在生產(chǎn)中發(fā)揮重要作用。
[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 .
【學(xué)位授予單位】:西安石油大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TE377
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