本文選題：減載力 + 助力深抽　； 參考：《中國石油大學(xué)(華東)》2015年碩士論文

【摘要】：隨著油田的進一步開發(fā),油層埋藏深、能量低、滲透性差的油井越來越多,泵掛深度的加大,受抽油機的額定載荷、扭矩以及抽油桿強度等條件的制約,影響著大泵應(yīng)用和油井產(chǎn)量的提高。減載器具有減載、深抽、節(jié)能等作用,在油田現(xiàn)場得到了越來越廣泛的應(yīng)用。有桿泵井抽油桿柱加裝助力深抽裝置后,抽油桿管柱的受力狀況發(fā)生了變化,影響示功圖形狀和特征以及基于示功圖的油井工況診斷精度。通過抽油桿柱的運動學(xué)和動力學(xué)分析以及Gibbs一維帶阻尼波動方程的修正等研究,建立了助力深抽有桿泵井泵功圖求解的數(shù)學(xué)模型;考慮油井正常工況、供液不足、氣體影響、抽油桿斷脫、上碰泵、下碰泵、柱塞卡泵、柱塞或游動閥磨損、固定閥磨損、工作筒磨損或裂開、雙閥漏失等一種或多種工況類型(故障類型)的診斷,建立了基于矢量法和規(guī)則診斷法的泵功圖工況特征綜合識別模型,并編制了“助力深抽有桿泵井工況診斷軟件”。應(yīng)用Algor有限元數(shù)值模擬軟件,建立了助力深抽有桿泵井抽油桿柱力學(xué)數(shù)值模擬模型,以“助力深抽有桿泵井工況診斷軟件”計算的泵功圖為邊界條件,模擬計算相應(yīng)地面功圖,并與實際地面功圖進行對比分析,結(jié)果表明,兩者最大相對誤差為5.7%,平均相對誤差為1.7%,誤差小于5%的點數(shù)占所有點數(shù)的99.2%,檢驗了所建立的助力深抽有桿泵井泵功圖求解數(shù)學(xué)模型和研發(fā)軟件的準(zhǔn)確性�！爸ι畛橛袟U泵井工況診斷軟件”經(jīng)9口油井的實際應(yīng)用,工況診斷正確率為100%,表明助力深抽有桿泵井工況診斷模型和軟件正確可行、應(yīng)用可靠,能夠為工程技術(shù)人員及時發(fā)現(xiàn)、分析、處理油井故障提供技術(shù)支持,實現(xiàn)油井高效穩(wěn)定生產(chǎn)。
[Abstract]:With the further development of the oil field, more and more oil wells with deep reservoir, low energy, poor permeability, and increasing pump hanging depth are restricted by the rated load, torque and rod strength of the pumping unit.It affects the application of large pump and the improvement of oil well production.The load reducer has the functions of reducing load, deep pumping and saving energy, and has been applied more and more widely in oil field.After the sucker rod string of rod pump well is equipped with the auxiliary deep pumping device, the stress state of the sucker rod string has changed, which affects the shape and characteristics of the indicator diagram and the diagnostic accuracy of the oil well working condition based on the indicator diagram.Based on the kinematics and dynamics analysis of sucker rod string and the modification of Gibbs one-dimensional damped wave equation, a mathematical model is established to solve the power diagram of deep pumping rod pump, considering the normal condition of oil well, the shortage of liquid supply, the influence of gas, and so on.Diagnosis of one or more types of working conditions (fault type), such as sucker rod breakage, upper impact pump, lower impact pump, plunger card pump, wear of plunger or swimming valve, wear of fixed valve, wear or crack of working tube, leakage of double valve, etc.Based on vector method and rule diagnosis method, a comprehensive identification model of working condition characteristics of pump power diagram is established, and a software for working condition diagnosis of deep pumping rod pump well with auxiliary force is developed.The numerical simulation model of sucker rod string mechanics of deep pumping rod pumping well is established by using Algor finite element numerical simulation software. The corresponding surface work diagram is simulated and calculated under the boundary condition of the pump work diagram calculated by "working condition Diagnostic Software for Deep pumping Rod pumping well".And compared with the actual ground work diagram, the results show that,The maximum relative error is 5.7 and the average relative error is 1.7. The points with error less than 5% account for 99.2 points of all points. The accuracy of the mathematical model and R & D software is tested.Through the practical application of 9 wells, the correct rate of working condition diagnosis is 100, which indicates that the diagnostic model and software for the working condition of deep pumping rod pump are correct and feasible, and the application is reliable.It can provide technical support for engineers to find, analyze and deal with oil well faults in time, and realize high efficiency and stable production.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE355.5

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