本文選題：井下油水分離　切入點：旋流器　出處：《東北石油大學(xué)》2015年碩士論文

【摘要】：本文通過對兩級旋流器串聯(lián)工藝進行研究,分析溢流流道對旋流器出口總產(chǎn)油量的影響,并且分別針對流道的三個關(guān)鍵結(jié)構(gòu)位置初步提出了四種優(yōu)化方案,即:不等徑環(huán)空流道結(jié)構(gòu)優(yōu)化,兩級匯總處相貫結(jié)構(gòu)優(yōu)化,兩級匯總處噴管結(jié)構(gòu)以及兩級連接處新型結(jié)構(gòu)。利用計算流體動力學(xué)(CFD)方法,Gambit軟件進行模型建立、Fluent軟件進行數(shù)值模擬分析,得到原始結(jié)構(gòu)的井下油水分離管柱內(nèi)兩級串聯(lián)溢流流道的流場情況,通過流場中反映出來的造成流場不穩(wěn)及影響出流的結(jié)構(gòu)位置提出優(yōu)化方案。四種優(yōu)化方案的模擬結(jié)果與原始結(jié)構(gòu)流道進行對比,均采用局部結(jié)構(gòu)變化而其它位置參數(shù)不變的規(guī)律,分析其優(yōu)化結(jié)構(gòu)得到出油率、油相質(zhì)量分率以及速度場的流場分布情況,進而來驗證方案的可行性。以往針對于提升油水分離效果多是考慮旋流器部分的設(shè)計,往往忽略了經(jīng)過分離后的流液在流道傳送過程中可能造成的滯留、難于匯總等出流問題,因此,本文著重研究流液經(jīng)旋流器溢流管排出后,流道的結(jié)構(gòu)布局對出流的影響;且嘗試拉伐爾噴管結(jié)構(gòu)應(yīng)用于井下油水分離管柱內(nèi)流道中。結(jié)果表明,四個優(yōu)化方案中有三個方案在改進后的流道流場更穩(wěn)定,實現(xiàn)更好的出流,有助于提高原油產(chǎn)出量。通過進一步開展參數(shù)優(yōu)選,有望取得更佳效果。
[Abstract]:In this paper, the influence of overflow channel on the total oil production of cyclone outlet is analyzed through the study of two-stage cyclone series process, and four optimization schemes are proposed for the three key structure positions of the channel.That is, the structure of annular channel with unequal diameter is optimized, the intersecting structure of two-stage aggregate is optimized, the nozzle structure of two-stage summation and the new structure of two-stage connection are optimized.By using the computational fluid dynamics (CFD) method and Gambit software, the fluent software was established to simulate and analyze the flow field of the two-stage series spillway in the oil-water separation pipe string with the original structure.The optimization scheme is proposed through the structural position which causes the instability of the flow field and affects the flow out of the flow field.The simulation results of the four optimization schemes are compared with those of the original structural channel. The local structure changes and other location parameters are not changed. The oil yield, the oil phase mass fraction and the flow field distribution of the velocity field in the optimized structure are analyzed.To verify the feasibility of the scheme.In the past, the design of hydrocyclone was always considered in order to improve the separation effect of oil and water, which often ignored the retention of separated fluid in the course of channel transport, which was difficult to sum up and so on.In this paper, the influence of the flow channel structure on the outlet flow is studied after the liquid is discharged by the cyclone overflow pipe, and the Laval nozzle structure is attempted to be used in the downhole oil-water separation pipe string.The results show that three of the four optimization schemes are more stable in the flow field of the improved channel and achieve better outflow, which is helpful to increase the output of crude oil.Through further parameter selection, it is expected to achieve better results.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE931.2

【參考文獻】

相關(guān)期刊論文 前1條

1 李增亮;張瑞霞;董祥偉;;井下油水分離系統(tǒng)電泵機組匹配研究[J];中國石油大學(xué)學(xué)報(自然科學(xué)版);2010年03期

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本文編號：1715157