本文關(guān)鍵詞： 水平井 有限元法 雙層彈簧元 扶正器 仿真模型　出處：《燕山大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：近幾年來(lái),由于采油難度的加大和地質(zhì)條件限制,水平井的數(shù)量不斷增加。水平井的井眼軌道是一條連續(xù)光滑彎曲的空間曲線,抽油桿柱和油管柱的受力情況比較復(fù)雜,偏磨狀況尤為嚴(yán)重。目前大多數(shù)油田采用大量配置扶正器的方法減輕桿管偏磨現(xiàn)象,大量扶正器使得抽油桿柱下行阻力增大甚至卡死,開發(fā)成本增加。本文根據(jù)油田實(shí)際情況,允許桿管柱部分位置發(fā)生接觸,優(yōu)化配置抽油桿扶正器間距,對(duì)油田實(shí)際生產(chǎn)有重要意義。本文主要研究?jī)?nèi)容如下:根據(jù)水平井的連續(xù)測(cè)斜數(shù)據(jù),模擬井眼軌跡曲線;建立桿管柱底端集中力計(jì)算模型;分析水平井抽油桿柱及油管柱環(huán)境載荷組成,考慮了扶正器和接箍的沿程壓差力和局部水頭損失,改進(jìn)了阻尼系數(shù)計(jì)算模型,完善了抽油桿柱的受力模型,建立了水平井油管柱的受力模型;通過(guò)分析油管柱內(nèi)外壓分布規(guī)律,建立了油管柱內(nèi)外壓的計(jì)算模型;以抽油桿柱為研究對(duì)象,結(jié)合空間梁有限元法和雙向彈簧元法,建立了桿管柱的單層接觸系統(tǒng)有限元仿真模型;以整個(gè)抽油桿柱與油管柱為研究對(duì)象,建立了抽油桿柱、油管柱和套管柱的雙層接觸系統(tǒng)的有限元分析模型;引入雙層多向彈簧元,建立了抽油桿柱、油管柱和套管柱的雙層接觸系統(tǒng)的彈簧元仿真模型,模擬抽油桿柱、油管柱和套管柱間的接觸位置和接觸壓力;根據(jù)抽油桿柱所受的軸向載荷、彎矩和扭矩,采用等強(qiáng)度理論校核抽油桿柱強(qiáng)度,并對(duì)抽油桿柱組合進(jìn)行優(yōu)化設(shè)計(jì);根據(jù)抽油桿柱、油管柱間的接觸位置和接觸壓力,對(duì)扶正器的配置間距進(jìn)行優(yōu)化設(shè)計(jì);利用Visual Basic 6.0編寫了《水平井桿管柱力學(xué)的有限元分析軟件》,進(jìn)行井眼軌跡模擬;桿管柱橫向振動(dòng)仿真;水平井抽油桿柱組合優(yōu)化與校核;扶正器配置方案優(yōu)化。
[Abstract]:In recent years, due to the increasing difficulty of oil recovery and the limitation of geological conditions, the number of horizontal wells has been increasing. The borehole track of horizontal wells is a continuous smooth curved space curve, and the stress situation of sucker rod string and tubing string is quite complex. The condition of partial wear is especially serious. At present, a large number of centralizers are used in most oilfields to reduce the phenomenon of eccentric wear of rod and pipe, and a large number of centralizers make the downlink resistance of sucker rod string increase or even jam, and the development cost increases. It is of great significance to optimize the spacing of sucker rod centralizer for the actual production of oil field. The main contents of this paper are as follows: according to the continuous skew data of horizontal well, the trajectory curve of borehole is simulated; The calculation model of the concentrated force at the bottom of the rod string is established, the environmental load composition of the rod string and tubing string in horizontal well is analyzed, the pressure difference along the path and the local head loss of the centralizer and hoop are considered, and the damping coefficient calculation model is improved. The stress model of the sucker rod string is perfected, the stress model of the tubing string in the horizontal well is established, the internal and external pressure distribution law of the tubing string is analyzed, the calculation model of the internal and external pressure of the tubing string is established, and the sucker rod string is taken as the research object. The finite element simulation model of single-layer contact system of rod string is established by using space beam finite element method and bi-directional spring element method, the whole sucker rod string and tubing string are taken as the research object, and the sucker rod string is established. The finite element analysis model of double-layer contact system between tubing string and casing string, the spring element simulation model of double-layer contact system of sucker rod string, tubing string and casing string is established by introducing double-layer multi-directional spring element, and the simulation model of sucker rod string is established. The contact position and contact pressure between tubing string and casing string; according to the axial load, bending moment and torque of sucker rod string, the strength of sucker rod string is checked by equal strength theory, and the combination of sucker rod string is optimized. The contact position and contact pressure between tubing strings are optimized to design the collocation spacing of centralizer, the finite element analysis software of rod string mechanics of horizontal well is compiled by Visual Basic 6.0 to simulate wellbore trajectory, the lateral vibration of rod string is simulated. Optimization and check of sucker rod string in horizontal well and optimization of centralizer configuration.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE933

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 薛守梅;葉立濤;高明;;水平井采油工藝現(xiàn)狀分析與發(fā)展趨勢(shì)研究[J];化工管理;2014年03期

2 徐駿,侯大方;斜井抽油桿柱的力學(xué)分析與設(shè)計(jì)[J];江漢石油學(xué)院學(xué)報(bào);1993年02期

3 張學(xué)鴻,劉巨保;水平井鉆柱接觸問(wèn)題的間隙元法[J];計(jì)算結(jié)構(gòu)力學(xué)及其應(yīng)用;1992年04期

4 谷勇;王云川;何巖峰;;抽油桿力學(xué)模型有限元分析方法及應(yīng)用[J];內(nèi)蒙古石油化工;2008年13期

5 齊申;;定向井的抽油桿優(yōu)化設(shè)計(jì)與應(yīng)用[J];內(nèi)蒙古石油化工;2012年08期

6 來(lái)椿森;于鵬亮;王峻峰;;水平井抽油桿柱扶正器分布設(shè)計(jì)[J];中國(guó)石油和化工標(biāo)準(zhǔn)與質(zhì)量;2013年21期

7 馬麗;張靜;楊薇;;抽油機(jī)井桿管防偏磨技術(shù)研究[J];江漢石油科技;2014年02期

8 張瑞霞;李增亮;姜東;李風(fēng)濤;;往復(fù)式有桿泵抽油桿扶正器的布置研究[J];石油礦場(chǎng)機(jī)械;2008年12期

9 李文飛;管志川;;深井鉆柱疲勞強(qiáng)度計(jì)算與分析[J];石油機(jī)械;2007年04期

10 董世民，，金仁賢;斜井抽油桿柱扶正器的配置間距[J];石油機(jī)械;1996年05期

相關(guān)碩士學(xué)位論文 前2條

1 肖寧;有桿抽油系統(tǒng)的桿柱組合設(shè)計(jì)[D];中國(guó)石油大學(xué);2008年

2 劉洪濤;抽油機(jī)井桿管偏磨治理技術(shù)研究[D];中國(guó)石油大學(xué);2008年

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