本文選題：水平井 + 管柱　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：石油鉆采過(guò)程中,大位移水平井管柱下放時(shí)需克服管柱與井壁之間的摩阻力,限制了作業(yè)管柱的入井深度及大位移水平段的延伸,現(xiàn)有的振動(dòng)工具都能在一定程度上降低管柱摩阻力,但工程應(yīng)用的理論依據(jù)尚不充分,也無(wú)法滿(mǎn)足大位移水平井技術(shù)發(fā)展對(duì)管柱下放能力的需求。為此,本文運(yùn)用數(shù)值分析方法,考慮了管柱與井壁的間隙、摩阻系數(shù)等因素建立了水平段管柱軸向力傳遞分析的數(shù)值模型,采用瞬態(tài)動(dòng)力學(xué)分析方法進(jìn)行求解,通過(guò)算例分析研究了橫向、軸向、扭轉(zhuǎn)振動(dòng)及其組合振動(dòng)對(duì)管柱軸向力傳遞效率的影響規(guī)律,給出了提升軸向力傳遞效率最顯著的單獨(dú)振動(dòng)形式為頻率1Hz和線位移幅值3mm的橫向X振動(dòng)或角位移幅值為p/6的扭轉(zhuǎn)振動(dòng),其中橫向振動(dòng)最大提升率達(dá)57.5%,扭轉(zhuǎn)振動(dòng)最大提升率達(dá)64.5%。兩種振動(dòng)形式的最佳組合為軸向+扭轉(zhuǎn),最大提升效率達(dá)74%。三種振動(dòng)形式的最佳組合為橫向X+軸向+扭轉(zhuǎn),最大提升效率達(dá)85.5%。結(jié)合國(guó)內(nèi)外振動(dòng)減阻工具,設(shè)計(jì)了橫向振動(dòng)工具,原理是以渦輪為旋轉(zhuǎn)動(dòng)力,帶動(dòng)偏心軸產(chǎn)生橫向振動(dòng)。軸向振動(dòng)工具的設(shè)計(jì)原理是依靠脈沖壓力發(fā)生器提供液壓動(dòng)力,驅(qū)動(dòng)振動(dòng)短接往復(fù)運(yùn)動(dòng),使工具產(chǎn)生軸向振動(dòng)。扭轉(zhuǎn)振動(dòng)工具設(shè)計(jì)主要分為導(dǎo)流單元和扭轉(zhuǎn)振動(dòng)單元,原理是通過(guò)改變流道以及相應(yīng)零件的配合實(shí)現(xiàn)工具的扭轉(zhuǎn)振動(dòng)。為大位移水平井作業(yè)管柱振動(dòng)減阻技術(shù)的推廣應(yīng)用提供技術(shù)支撐。
[Abstract]:In the process of oil drilling and production, the friction resistance between the string and the shaft wall should be overcome when the string of the long reach horizontal well is lowered, which limits the depth of entry and the extension of the horizontal section of the long displacement of the working string. The existing vibration tools can reduce the friction of pipe string to a certain extent, but the theoretical basis of engineering application is not enough, and it can not meet the requirement of long reach horizontal well technology development. In this paper, the numerical model of axial force transfer analysis of horizontal pipe string is established by taking into account the gap between string and shaft wall, friction coefficient and so on, and the transient dynamic analysis method is used to solve the problem. The effects of transverse, axial, torsional and combined vibration on the axial force transfer efficiency of pipe string are studied by an example. The single vibration forms with the most remarkable axial force transfer efficiency are the transverse X vibration of the frequency 1Hz and the linear displacement amplitude 3mm or the torsional vibration with the angular displacement amplitude of p / 6. The maximum lifting rate of the transverse vibration is 57.5 and the maximum lifting rate of the torsional vibration is 64.5. The best combination of the two forms of vibration is axial torsion, the maximum lifting efficiency is 74. The best combination of the three vibration forms is transverse X axial torsion, and the maximum lifting efficiency is 85.5. Combined with the domestic and foreign vibration drag reduction tools, the transverse vibration tool is designed. The principle is to use the turbine as the rotating force to drive the eccentric shaft to produce transverse vibration. The design principle of the axial vibration tool is to provide the hydraulic power by the pulse pressure generator and to drive the vibration short connection and reciprocating motion to make the tool produce the axial vibration. The design of torsional vibration tool is mainly divided into diversion unit and torsional vibration unit. The principle is to realize the torsional vibration of the tool by changing the flow channel and corresponding parts. It provides technical support for the extension and application of vibration drag reduction technology for long-reach horizontal wells.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TE92

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