本文選題：水平井 + 套管��； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：隨著水平井技術(shù)的發(fā)展,水平井套管柱的設(shè)計(jì)和安全施工關(guān)系到一口井的完成和采油、增產(chǎn)、修井等后續(xù)工程的正常實(shí)施,是油氣井工程技術(shù)的重要領(lǐng)域。水平井具有一定長度的水平位移并且造斜井段井眼曲率大,套管柱在下入過程中的受力較為復(fù)雜,必須要對套管柱在下入過程中的摩阻力、下入過程強(qiáng)度問題進(jìn)行分析和計(jì)算,為現(xiàn)場水平井鉆井工程設(shè)計(jì)(包括鉆井設(shè)備選擇、井眼軌跡參數(shù)、管柱設(shè)計(jì)、管柱下入設(shè)計(jì)等)、施工安全(井眼軌跡控制、管柱下入、井下作業(yè)等)提供科學(xué)合理的意見和必要的技術(shù)支持。 本文針對水平井套管摩阻計(jì)算及可下入性進(jìn)行了系統(tǒng)分析和研究,主要開展了以下研究工作： (1)利用三次樣條插值方法對實(shí)測井眼軌跡進(jìn)行了擬合,根據(jù)擬合的井眼軌跡數(shù)據(jù),建立了套管摩阻力學(xué)模型,模型考慮了鉆井液黏滯阻力、壓差阻力和下套管過程中可能產(chǎn)生的動載荷等因素的影響。 (2)考慮井眼曲率對套管下入的影響,計(jì)算了不同規(guī)格的套管可以通過的最大井眼曲率,并運(yùn)用剛性幾何相容模型分析計(jì)算一定曲率下單根套管可以通過的最大長度,確保套管能順利通過最大曲率井段。 (3)根據(jù)套管柱下入的具體力學(xué)條件,研究下入過程中管柱的內(nèi)壓力、外擠力、軸向力,按照第四強(qiáng)度理論對入井套管柱進(jìn)行強(qiáng)度校核,對套管柱下入的安全性進(jìn)行分析研究。 (4)利用以上研究成果,采用VB6.0程序語言,編制了水平井套管下入可行性分析軟件,對研究工區(qū)的一口水平井進(jìn)行了套管下入可行性分析,應(yīng)用表明,計(jì)算結(jié)果和現(xiàn)場實(shí)測結(jié)果的誤差在合理范圍內(nèi),證明該模型是可靠的,能夠預(yù)測管柱下入摩阻及軸向力,對判斷套管柱能否順利下入提供理論依據(jù),同時(shí),結(jié)合現(xiàn)場下套管的施工情況,提出了該區(qū)塊套管下入的技術(shù)措施。
[Abstract]:With the development of horizontal well technology, the design and safe construction of casing string in horizontal well is related to the completion of a well and the normal implementation of subsequent projects such as oil production, production increase, workover and so on, which is an important field of oil and gas well engineering technology. Horizontal wells have a certain length of horizontal displacement and the borehole curvature of inclined well section is large, and the casing string is subjected to more complicated forces in the process of downgoing, so it is necessary to analyze and calculate the friction resistance and the strength of the casing string in the process of downgoing. For site horizontal well drilling engineering design (including drilling equipment selection, wellbore trajectory parameters, string design, string entry design, etc.), construction safety (wellbore trajectory control, string entry, etc.) Provide scientific and reasonable advice and necessary technical support. In this paper, the calculation of casing friction and the funnability of horizontal well casing are systematically analyzed and studied, and the following research work is mainly carried out: 1) the measured borehole trajectory is fitted by cubic spline interpolation method. According to the fitted borehole trajectory data, the casing friction model is established, and the viscous resistance of drilling fluid is taken into account in the model. The pressure differential resistance and the possible dynamic load in the casing process. (2) considering the influence of borehole curvature on casing entry, the maximum borehole curvature of casing with different specifications is calculated, and the maximum length of casing which can be passed by certain curvature is calculated by using rigid geometric compatibility model. Ensure the casing can pass through the maximum curvature section smoothly. 3) according to the specific mechanical conditions of casing string entry, the internal pressure, external squeezing force and axial force of string are studied. According to the fourth strength theory, the strength of casing string is checked, and the safety of casing string under casing string is analyzed and studied. 4) based on the above research results and VB6.0 program language, the feasibility analysis software of casing down in horizontal well is developed, and the feasibility analysis of casing entry in a horizontal well in the study area is carried out. The application shows that, It is proved that the model is reliable, which can predict the frictional resistance and axial force under the pipe string and provide a theoretical basis for judging whether the casing string can enter smoothly. Combined with the field casing operation, the technical measures of casing down in this block are put forward.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE931.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 閆鐵;李慶明;王巖;李井輝;畢雪亮;;水平井鉆柱摩阻扭矩分段計(jì)算模型[J];大慶石油學(xué)院學(xué)報(bào);2011年05期

2 蔡恩宏;;彎曲井段中套管通過能力分析研究[J];石油和化工設(shè)備;2010年08期

3 崔永林;魯洪清;嚴(yán)楊;;大位移井摩阻計(jì)算研究[J];河南科技;2014年03期

4 牛成成;鄭德帥;楊順輝;李夢剛;劉波;;大位移井套管下入摩阻預(yù)測新方法[J];科學(xué)技術(shù)與工程;2014年06期

5 廖華林,丁崗;大位移井套管柱摩阻模型的建立及其應(yīng)用[J];石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2002年01期

6 黃志強(qiáng);;定向井下套管摩阻數(shù)值計(jì)算及其應(yīng)用[J];石油地質(zhì)與工程;2009年04期

7 李子豐,李敬媛,孔凡君;鉆柱拉力—扭矩模型述評[J];石油機(jī)械;1993年08期

8 眭滿倉,孟坤六,杜鐮;水平井管柱下入摩阻分析及應(yīng)用[J];石油機(jī)械;1999年02期

9 李子豐,李敬元,馬興瑞,黃文虎;油氣井桿管柱動力學(xué)基本方程及應(yīng)用[J];石油學(xué)報(bào);1999年03期

10 陳穎超;石曉兵;吳朗;楊火海;;套管在側(cè)鉆水平井彎曲段可下入性分析[J];新疆石油科技;2012年01期

，

本文編號：1982571