本文選題：油水砂三相分離 + 四種工藝流程�。� 參考：《西安石油大學(xué)》2015年碩士論文

【摘要】：隨著對(duì)環(huán)境保護(hù)的要求越來越高,以及能源需求的與日俱增,油井壓裂返排液的排放標(biāo)準(zhǔn)也越來越嚴(yán)格,這就要求人們對(duì)壓裂返排液的處理展開深入研究。本文針對(duì)油田在采用水力噴砂射孔壓裂、放噴、洗井、抽吸聯(lián)作工藝時(shí),返排液中油、水、砂三相含量差異較大的問題,設(shè)計(jì)研發(fā)了一套油井壓裂返排液處理系統(tǒng),主要目的是將油井壓裂返排液中的油、水、砂三相分離開來。首先根據(jù)四種工況下返排液的參數(shù),進(jìn)行不同工況下返排液分離的工藝流程設(shè)計(jì)。其次針對(duì)水力噴砂射孔壓裂這一工況中返排液流量大、含砂量高的情況,設(shè)計(jì)出中心傳動(dòng)除砂器,用以去除絕大部分壓裂砂,減少除砂旋流器工作時(shí)的含砂量。并且對(duì)整套系統(tǒng)中其他設(shè)備根據(jù)工況進(jìn)行選型設(shè)計(jì),將中心傳動(dòng)除砂器、除砂旋流器、振動(dòng)篩、螺旋輸砂器、油水分離器和離心泵等以不同的組合方式組合在一起,形成四種工況下的配套處理工藝流程。再對(duì)中心傳動(dòng)除砂器內(nèi)部流場的分布情況做了數(shù)值模擬分析研究,得到了固液兩相體積、密度、速度分布云圖。從這些云圖上看出分離效果明顯,達(dá)到了預(yù)期的分離目的,驗(yàn)證了中心傳動(dòng)除砂器固液分離的可行性。進(jìn)一步對(duì)中心傳動(dòng)除砂器的結(jié)構(gòu)進(jìn)行了優(yōu)化改進(jìn),提高其除砂效率。使用單因素法,討論了結(jié)構(gòu)參數(shù)、操作參數(shù)和物性參數(shù)對(duì)中心傳動(dòng)除砂器分離性能的影響。最后對(duì)整套系統(tǒng)的自動(dòng)化控制進(jìn)行了方案設(shè)計(jì)。本文將對(duì)油井壓裂返排液分離技術(shù)的研究起到一定的促進(jìn)作用,也為油水砂三相分離技術(shù)的應(yīng)用領(lǐng)域提供了又一可行措施。
[Abstract]:With the increasing demand for environmental protection and energy demand, the discharge standard of fracturing fluid is becoming more and more strict, which requires people to carry out in-depth research on the treatment of fracturing fluid back drainage. In order to solve the problem of large difference of oil, water and sand content in the back flow fluid when hydraulic sand blasting perforation, blowout, well washing and suction are used in oilfield, a set of treatment system for oil well fracturing and drainage fluid is designed and developed in this paper. The main purpose is to separate the oil, water and sand from the fracturing fluid. Firstly, according to the parameters of backflow under four working conditions, the process design of backflow separation under different working conditions is carried out. Secondly, in view of the situation that the back flow rate and sand content are high in hydraulic sand blasting perforation fracturing, a central drive sand remover is designed to remove most of the fracturing sand and reduce the sand content in the operation of sand removal cyclone. And the other equipments in the whole system are selected according to the working conditions. The central drive sand remover, sand removal cyclone, vibrating screen, spiral sand conveyer, oil-water separator and centrifugal pump are combined in different combinations. Forming four working conditions of the supporting treatment process. The distribution of the flow field in the center drive sand remover is analyzed numerically, and the volume, density and velocity distribution of the solid and liquid phase are obtained. It is shown from these cloud diagrams that the separation effect is obvious and the expected separation purpose is achieved. The feasibility of solid-liquid separation of the central drive sand remover is verified. Furthermore, the structure of the center drive sand remover is optimized and improved to improve the sand removal efficiency. The influence of structure parameters, operation parameters and physical parameters on the separation performance of the central drive sand remover is discussed by using the single factor method. Finally, the automatic control of the whole system is designed. This paper will play a certain role in promoting the research of fracturing and drainage separation technology in oil wells and provide another feasible measure for the application of oil-water-sand three-phase separation technology.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X741

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本文編號(hào)：1851077