【摘要】：鉆定向井是石油鉆探開發(fā)中的重要手段之一,是一種設(shè)計(jì)目標(biāo)(靶區(qū))與井口不在一條鉛垂線上的井。鉆井施工中影響井眼軌跡的主要因素有地質(zhì)特性、鉆具組合結(jié)構(gòu)、井眼軌跡幾何形狀、鉆井工藝參數(shù)。井眼軌跡是上述諸因素互相作用的結(jié)果,現(xiàn)場施工難度大,多鐘因素可造成實(shí)鉆井眼軌跡要偏離井眼軌道這一現(xiàn)實(shí)。論文在滿足鉆井工程要求的前提下,綜合考慮后續(xù)機(jī)械采油設(shè)備合理運(yùn)行及節(jié)能降耗等問題,優(yōu)選井眼軌道剖面類型;優(yōu)選不同垂深與不同水平位移定向井的造斜點(diǎn)垂深以及水平位移的合理界限,指導(dǎo)定向井井眼軌道的設(shè)計(jì);在三維軌跡條件下,研究作業(yè)管柱井下工具串在套管內(nèi)直線與彎曲通過的臨界條件,指導(dǎo)作業(yè)管柱工具串配置方案設(shè)計(jì),確保作業(yè)管柱的施工安全。針對不同類型定向井井身剖面的特點(diǎn),建立抽油機(jī)舉升系統(tǒng)性能參數(shù)的計(jì)算機(jī)仿真方法;綜合考慮鉆井費(fèi)用、舉升系統(tǒng)性能參數(shù)與運(yùn)行成本等性能指標(biāo),優(yōu)選井身剖面類型、優(yōu)選不同垂深與不同水平位移定向井的造斜點(diǎn)垂深以及水平位移的合理界限。根據(jù)實(shí)際井眼三維軌跡與工具串具體結(jié)構(gòu),研究作業(yè)管柱工具串在套管內(nèi)的受力與彎曲變形規(guī)律,建立工具串在套管內(nèi)直線與彎曲通過界限的力學(xué)分析方法。論文建立了井下工具串在三維井眼內(nèi)直線與彎曲通過臨界長度的計(jì)算模型,給出了不同規(guī)格井下工具直線與彎曲通過的臨界長度。同時(shí)建立了整體管柱通過性的計(jì)算模型。
[Abstract]:Directional well drilling is one of the most important methods in oil drilling and development. It is a kind of well which is not on a lead vertical line between the target area and the well head. The main factors affecting the borehole trajectory in drilling operation are geological characteristics, drilling tool combination structure, borehole trajectory geometry, drilling parameters. The borehole trajectory is the result of the interaction of the above factors. The field construction is difficult and the multi-clock factors can cause the real drilling hole trajectory to deviate from the borehole track. On the premise of meeting the requirements of drilling engineering, this paper synthetically considers the following problems such as rational operation of mechanical oil recovery equipment and energy saving and consumption reduction, so as to optimize the type of borehole track profile. The vertical depth of different vertical depth and horizontal displacement directional well and the reasonable limit of horizontal displacement are selected to guide the hole track design. Under the condition of three dimensional trajectory, the critical conditions for the straight line and bending of the tool string in the casing are studied to guide the design of the tool string configuration scheme and ensure the construction safety of the working string. According to the characteristics of different types of directional wellbore profile, a computer simulation method for the performance parameters of pumping unit lift system is established. Considering the drilling cost, the performance parameters and operation cost of the lifting system, the optimum selection of shaft profile type, the optimum selection of the vertical depth of different vertical depth and different horizontal displacement directional wells, and the reasonable limits of horizontal displacement. According to the 3D trajectory of actual borehole and the concrete structure of tool string, the force and bending deformation of tool string in casing are studied, and the mechanical analysis method of straight line and bending crossing boundary of tool string in casing is established. In this paper, the calculation model of the critical length of straight line and bending passage of downhole tool string in 3D hole is established, and the critical length of straight line and bending passage of downhole tool with different specifications is given. At the same time, the calculation model of the transmissivity of the whole pipe string is established.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE243

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相關(guān)期刊論文 前1條

1 董世民;邢明明;張紅;柴國紅;;基于系統(tǒng)效率最高的抽油機(jī)井合理流壓研究[J];燕山大學(xué)學(xué)報(bào);2011年04期

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本文編號：2373052