本文選題：超深井　切入點(diǎn)：鉆具接頭　出處：《石油學(xué)報(bào)》2016年04期

【摘要】：在深井、超深井中,鉆具接頭由于要承受較大的軸向拉力作用,其抗扭性能受到很大的限制;同時,由于井下情況復(fù)雜鉆柱遇卡現(xiàn)象時有發(fā)生,而頂驅(qū)設(shè)備的出現(xiàn)使得大軸向力解卡作業(yè)時旋轉(zhuǎn)鉆柱成為可能,此時鉆具接頭承受很大的軸向載荷和扭矩聯(lián)合作用,可能處于極為危險的狀態(tài),因此快速準(zhǔn)確地確定不同軸向拉力條件下鉆具接頭的抗扭性能是保障作業(yè)安全的關(guān)鍵。API標(biāo)準(zhǔn)中雖提供了拉、扭耦合條件下鉆具接頭極限載荷的確定方法,但由于基于很多假設(shè)性條件,所得結(jié)果與實(shí)際情況間存在較大誤差,特別是在深井、超深井等復(fù)雜鉆井作業(yè)中,這種誤差更大。基于鉆具接頭的三維彈塑性有限元分析,分別計(jì)算了3種主流規(guī)格鉆具接頭在不同軸向拉伸載荷條件下的極限工作扭矩,通過對計(jì)算結(jié)果的多項(xiàng)式擬合,得到鉆具接頭的極限工作扭矩計(jì)算公式,并繪制出鉆具接頭的極限工作扭矩圖版,形成實(shí)際工況下的鉆具接頭極限工作扭矩快速確定方法。
[Abstract]:In deep and ultra-deep wells, the torsion resistance of drill pipe joints is greatly restricted because they have to bear large axial tensile forces, and at the same time, the phenomenon of complex drill string bumping occurs frequently in downhole conditions.The emergence of the top drive equipment makes it possible to rotate the drill string during the operation of the large axial force release card. At this time, the joint of the drill tool is subjected to a great combination of axial load and torque, and may be in a very dangerous state.Therefore, the fast and accurate determination of the torsion resistance of drill joint under different axial tensile forces is the key to ensure the safety of operation. Although the API standard provides a method for determining the ultimate load of the joint under the conditions of tension and torsion coupling,However, due to many hypothetical conditions, there is a large error between the obtained results and the actual conditions, especially in complex drilling operations such as deep wells and ultra-deep wells.Based on the three-dimensional elastic-plastic finite element analysis of drill joint, the limit working torque of three kinds of mainstream drill pipe joints under different axial tensile loads is calculated, and the polynomial fitting of the calculated results is carried out.The formula for calculating the limit working torque of the drill joint is obtained, and the working torque chart of the joint is plotted, and the method for determining the working torque of the joint under the actual working condition is formed.
【作者單位】： 上海大學(xué)上海市應(yīng)用數(shù)學(xué)和力學(xué)研究所;上海大學(xué)機(jī)械工程博士后流動站;中國石油塔里木油田公司;
【基金】：國家自然科學(xué)基金項(xiàng)目(No.U1663205,No.51174130) 上海市重點(diǎn)學(xué)科建設(shè)項(xiàng)目(S30106) 上海市優(yōu)秀學(xué)術(shù)帶頭人項(xiàng)目(12XD1402500) 上海市部分地方院校能力建設(shè)項(xiàng)目(12160500200) 上海市力學(xué)在能源工程中的應(yīng)用重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目(ORF-201602) 上海市教育委員會(高峰學(xué)科建設(shè)項(xiàng)目)資助
【分類號】：TE921
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本文編號：1728812