發(fā)布時(shí)間：2018-05-02 14:37

  本文選題：示功圖量油 + 閥的開閉點(diǎn)��； 參考：《西安石油大學(xué)》2015年碩士論文

【摘要】：目前國內(nèi)油田油井產(chǎn)量的計(jì)量主要是將各口井的油輸送到計(jì)量站進(jìn)行集中計(jì)量。這種計(jì)量方法既不經(jīng)濟(jì),對油田計(jì)量的長期發(fā)展也很不利。如何改變這種現(xiàn)有的計(jì)量方式,實(shí)現(xiàn)對油井產(chǎn)液量的不間斷計(jì)量,并且能夠了解采油系統(tǒng)的狀況是簡化國內(nèi)外石油計(jì)量工藝流程和提高采油效率需要處理的一個(gè)課題。功圖量液技術(shù)就是為解決單井計(jì)量問題而提出的,盡管目前已部分應(yīng)用于油田實(shí)際生產(chǎn),但同時(shí)也存在部分問題,同時(shí)由于低產(chǎn)井產(chǎn)量低的特殊井況,因此,本文針對低產(chǎn)井功圖量液技術(shù)進(jìn)行研究。本文首先對區(qū)塊化的油井產(chǎn)液量進(jìn)行了回歸分析,建立了兩種產(chǎn)液量的回歸模型,并針對該方法進(jìn)行了按分產(chǎn)液量階段進(jìn)行回歸分析,輔助功圖量液計(jì)產(chǎn)。介紹了抽油機(jī)和抽油泵的工作原理;闡述了功圖量液技術(shù)的原理,并分析了功圖法計(jì)算產(chǎn)液量的兩種方法;然后以地面示功圖為邊界條件,通過對抽油桿柱進(jìn)行受力分析,建立了一維波動(dòng)方程,采用傅立葉級數(shù)法求解該方程,從而獲得井下泵功圖,并分析了不同阻尼系數(shù)的取值對產(chǎn)液量的影響。另外,由于油管內(nèi)的混合物具有壓縮性,油井中的液體到達(dá)井口后,溶解在液體中的氣體便會(huì)析出,所以井下的排液量與地面產(chǎn)液量并不相等。本文采用了通過計(jì)算泵排出壓力下混合物的體積系數(shù)來折算地面產(chǎn)液量的方法。確定柱塞有效沖程是功圖量液的關(guān)鍵環(huán)節(jié)之一。本文利用泵示功圖研究泵功圖、閥開閉點(diǎn)位置以及柱塞有效沖程三者之間的關(guān)系,并建立了泵功圖曲線的曲率計(jì)算模型,并結(jié)合泵的工況,在高、低載荷分別找到兩個(gè)曲率變化最大的點(diǎn),得到了凡爾開閉點(diǎn)的位置,從而確定了柱塞的有效沖程。提出了運(yùn)用載荷線來確定凡爾開閉點(diǎn)位置的新方法,并根據(jù)油田的產(chǎn)液量進(jìn)行了驗(yàn)證,結(jié)果表明該方法能夠準(zhǔn)確判斷出凡爾開閉點(diǎn)的位置。應(yīng)用MATLAB軟件的GUI界面編制低產(chǎn)井功圖量液軟件,該軟件包括數(shù)據(jù)輸入,油井產(chǎn)量計(jì)算,數(shù)據(jù)輸出,幫助等模塊,軟件界面操作方便,并對國內(nèi)油田油井進(jìn)行了計(jì)算分析,得到計(jì)算產(chǎn)液量與實(shí)際產(chǎn)量平均相對誤差為6.60%,驗(yàn)證了示功圖量油的可行性。
[Abstract]:At present, the main measure of oil well production in domestic oil field is to carry the oil from each well to the metering station for centralized metering. This metering method is neither economical nor unfavorable to the long-term development of oil field metering. How to change the existing metering method, realize the uninterrupted measurement of oil well liquid production, and understand the situation of oil production system is a task that needs to be dealt with in simplifying the domestic and foreign oil metering process flow and improving the oil recovery efficiency. The technology of power chart and liquid measurement is put forward to solve the problem of single well measurement. Although it has been partially used in oil field production at present, it also has some problems at the same time, and because of the special well condition with low production rate of low production well, therefore, In this paper, the technique of measuring liquid in low production wells is studied. In this paper, firstly, the regression analysis of the liquid production of the block oil well is carried out, and the regression models of the two kinds of fluid production are established, and the regression analysis is carried out according to the phase of the liquid production in accordance with this method, which can be used as an auxiliary work chart to measure the liquid production. This paper introduces the working principle of pumping unit and sucker pump, expounds the principle of power chart measuring liquid technology, and analyzes two methods of calculating liquid yield by power chart method, then takes the surface indicator diagram as the boundary condition, and analyzes the force on the sucker rod string through the analysis of the force on the sucker rod string. The one-dimensional wave equation is established, and the Fourier series method is used to solve the equation. The work diagram of underground pump is obtained, and the influence of different damping coefficient on liquid production is analyzed. In addition, due to the compressibility of the mixture in the tubing, the gas dissolved in the oil well will precipitate when the liquid reaches the well head, so the downhole discharge is not equal to the surface liquid production. In this paper, the method of calculating the volume coefficient of the mixture under pump discharge pressure is used to calculate the surface liquid production. Determining the effective stroke of plunger is one of the key steps of measuring liquid. In this paper, the relationship among pump power diagram, valve opening and closing point position and effective stroke of plunger is studied by using pump indicator diagram. The curvature calculation model of pump power diagram curve is established. Two points with the largest curvature change are found under low load, and the position of the opening and closing points of Val is obtained, and the effective stroke of the plunger is determined. A new method of determining the opening and closing point of Van er by using load line is put forward and verified according to the fluid production of oil field. The results show that the method can accurately judge the position of opening and closing point of Van er. Using the GUI interface of MATLAB software to compile the low-yield well work chart and liquid measurement software, the software includes data input, oil well production calculation, data output, help module and so on. The interface of the software is easy to operate, and the calculation and analysis of oil wells in domestic oil field are carried out. The average relative error between the calculated liquid yield and the actual output is 6.60, which verifies the feasibility of measuring oil by the indicator diagram.
【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】：2015
【分類號(hào)】：TE863.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王秀娟;張立慶;宋子學(xué);李恒雙;;一種改進(jìn)的功圖量油技術(shù)及應(yīng)用研究[J];長江大學(xué)學(xué)報(bào)(自然科學(xué)版)理工卷;2010年03期

2 袁養(yǎng)平;李萍;張海浪;謝啟安;;示功圖求產(chǎn)的方法研究及應(yīng)用分析[J];青海石油;2007年02期

3 周瑞芬;柏琳;李東陽;;抽油桿柱等效粘滯阻尼系數(shù)的確定[J];石油礦場機(jī)械;2010年03期

4 董世民,姚春冬,齊振林;回歸分析方法在油田抽油機(jī)井管理中的應(yīng)用[J];數(shù)理統(tǒng)計(jì)與管理;1993年06期

5 張琪,吳曉東;抽油井計(jì)算機(jī)診斷技術(shù)及其應(yīng)用[J];華東石油學(xué)院學(xué)報(bào);1984年02期

6 關(guān)成堯;檀朝東;余金澤;呂銳;;大港油田抽油機(jī)井典型示功圖分析[J];中國石油和化工;2007年22期

7 張興華,王俊奇,高志光,鄭欣;計(jì)量油井產(chǎn)量的功圖法技術(shù)[J];河南石油;2005年05期

8 余國安,鄔亦炯,王國源,朱加強(qiáng),馬俊;多級桿柱抽油機(jī)井的三維振動(dòng)[J];石油機(jī)械;1989年06期

9 董世民;馮娜娜;張偉;;抽油泵柱塞與泵筒間隙漏失量計(jì)算方法的研究[J];石油機(jī)械;2006年11期

10 高國華;彭勇;余國安;梁書娟;周赤峰;;有桿抽油井泵示功圖的定量分析方法[J];石油學(xué)報(bào);1993年04期

相關(guān)碩士學(xué)位論文 前3條

1 王曉菡;用于工況診斷的示功圖特征提取方法研究[D];中國石油大學(xué);2011年

2 徐世文;桿式抽油機(jī)運(yùn)行狀態(tài)監(jiān)測的研究[D];沈陽工業(yè)大學(xué);2004年

3 高銀中;用示功圖計(jì)算抽油機(jī)井井口產(chǎn)液量方法研究[D];北京交通大學(xué);2007年

，

本文編號(hào)：1834321