本文選題：水平井　切入點(diǎn)：管柱　出處：《東北石油大學(xué)學(xué)報(bào)》2017年03期 　論文類型：期刊論文

【摘要】：大位移水平井管柱下放時(shí)需要克服管柱與井壁之間的摩阻力,限制作業(yè)管柱的入井深度及大位移水平段的延伸距離,振動(dòng)工具雖然可以在一定程度上降低管柱摩阻力,但其工程應(yīng)用依據(jù)還不充分。根據(jù)不同工況,運(yùn)用數(shù)值仿真方法,分析橫向、軸向、扭轉(zhuǎn)及其組合振源對(duì)管柱軸向力傳遞效率的影響規(guī)律。結(jié)果表明,單一振源對(duì)管柱軸向力傳遞效率在12.5%~64.5%之間,其中效果顯著的振源頻率為1Hz、線位移幅值為3mm的橫向X振動(dòng)或角位移幅值為π/6的扭轉(zhuǎn)振動(dòng),計(jì)算得到兩種及三種振源組合傳遞效率在44.0%~85.0%之間;兩種振源的最佳組合為軸向加扭轉(zhuǎn),最大傳遞效率為74.0%,三種振源的最佳組合為橫向X加軸向加扭轉(zhuǎn),最大傳遞效率為85.5%;比單一振源提升21.0%~31.5%,其中無間隙狀態(tài)下提升幅度最大。該結(jié)果可為大位移水平井作業(yè)管柱振動(dòng)減阻技術(shù)的應(yīng)用提供技術(shù)參考。
[Abstract]:It is necessary to overcome the frictional resistance between the string and the shaft wall when the pipe string is lowered, and to limit the depth of the working string and the extended distance of the horizontal section of the extended displacement. Although the vibration tool can reduce the friction of the string to a certain extent, However, the engineering application is not sufficient. According to different working conditions, the influence of transverse, axial, torsional and combined vibration sources on the axial force transfer efficiency of pipe string is analyzed by numerical simulation method. The axial force transfer efficiency of a single vibration source to the string is between 12.5% and 64.5%, in which the effective vibration source frequency is 1Hz, the transverse X vibration with a linear displacement amplitude of 3 mm or the torsional vibration with the angular displacement amplitude 蟺 / 6. The results show that the transfer efficiency of two or three kinds of combination is between 44.0% and 85.0%, the best combination of two kinds of vibration sources is axial torsion, the maximum transfer efficiency is 74.0, the best combination of three kinds of vibration sources is transverse X plus axial torsion. The maximum transfer efficiency is 85.5, 21.0% higher than that of a single vibration source, 31.5% higher than that of a single vibration source, among which the lifting amplitude is the largest in the condition of no gap. The results can provide a technical reference for the application of vibration drag reduction technology in long reach horizontal wells.
【作者單位】： 東北石油大學(xué)機(jī)械科學(xué)與工程學(xué)院;大慶油田創(chuàng)業(yè)集團(tuán)華誼實(shí)業(yè)公司;
【基金】：國家自然科學(xué)基金項(xiàng)目(51674088)
【分類號(hào)】：TE921

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