【摘要】：隨著油田開發(fā)中后期的到來,大位移井的應(yīng)用越來越廣泛,在鉆井的過程中,摩阻扭矩過大引起的問題尤為突出,這嚴(yán)重影響了鉆井的效率。摩阻扭矩過大使滑動鉆進(jìn)延伸能力不夠,而旋轉(zhuǎn)導(dǎo)向鉆具成本過高等問題都嚴(yán)重影響了鉆井作業(yè)。半程旋轉(zhuǎn)鉆井技術(shù)是我國企業(yè)自主創(chuàng)新提出的,該技術(shù)綜合了滑動導(dǎo)向和旋轉(zhuǎn)鉆井的優(yōu)點(diǎn),本文主要對其重要組成部分離合器進(jìn)行研究,以一種已設(shè)計(jì)成功并申請專利的離合器為研究對象,通過資料調(diào)研進(jìn)行力學(xué)分析,建立了滑動鉆進(jìn)和旋轉(zhuǎn)鉆進(jìn)同時(shí)存在的組合力學(xué)模型,并對其摩阻扭矩進(jìn)行計(jì)算,并通過模擬計(jì)算優(yōu)選離合器的安放位置,以此證明了這種鉆井技術(shù)是可行性。通過理論研究與模擬計(jì)算,證明了半程旋轉(zhuǎn)鉆井技術(shù)能夠?qū)崿F(xiàn)鉆井過程中減摩降扭的要求,能夠提高鉆井效率,提高大位移井的延伸能力,并節(jié)約成本。
[Abstract]:With the coming of the middle and late stage of oilfield development, the application of extended reach wells is more and more extensive. During drilling, the problems caused by excessive friction torque are particularly prominent, which seriously affects the efficiency of drilling. The extension ability of sliding drilling is not enough and the cost of rotary steering drilling tools is too high, which seriously affects drilling operation. Semi-range rotary drilling technology is put forward by Chinese enterprises, which combines the advantages of sliding steering and rotary drilling. In this paper, the clutch, an important part of it, is studied. Taking a kind of clutch which has been designed successfully and applied for patent as the research object, the combined mechanics model of sliding drilling and rotary drilling is established, and its friction torque is calculated. This drilling technology is proved to be feasible by simulating the location of the optimal clutch. Through theoretical research and simulation calculation, it is proved that the semi-range rotary drilling technology can meet the requirements of reducing friction and torsion in drilling process, improve drilling efficiency, improve the extension ability of extended well, and save cost.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE921

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