發(fā)布時間：2018-03-26 07:37

  本文選題：封隔器　切入點：力學研究　出處：《西南石油大學學報(自然科學版)》2016年06期

【摘要】：帶多封隔器的完井管柱是Norsok D010規(guī)范推薦的高溫高壓氣井完井管柱中的重要類型,但是多封隔器完井管柱結(jié)構(gòu)在井下工況中的受力和變形較單一結(jié)構(gòu)管柱更為復雜,并且多封隔器之間局部的圈閉壓力可能導致管柱損壞。為此,針對多封隔器管柱結(jié)構(gòu)特點,建立了考慮端面效應、熱脹冷縮效應、形變效應、螺旋和正弦屈曲效應影響的管柱變形和受力計算模型,并結(jié)合現(xiàn)場實際工況開展了實例計算。計算結(jié)果表明,封隔器在井筒中的位置以及井筒溫度壓力對整個管柱的受力和變形影響較大,在多封隔器復合管柱設計和安全評價時需要考慮多封隔器對管柱力學行為的影響。
[Abstract]:The completion string with multiple Packers is an important type of high temperature and high pressure gas well completion string recommended by Norsok D010 Code. However, the stress and deformation of multi-Packer completion string structure in downhole conditions are more complex than that of single structure string. And the local trap pressure between the multiple Packers may lead to the damage of the string. In view of the structural characteristics of the multi-Packer string, the end effect, the effect of thermal expansion and cold contraction, the effect of deformation are considered. The calculation model of deformation and force of pipe string affected by spiral and sinusoidal buckling effect is presented. The position of the Packer in the wellbore and the temperature and pressure of the wellbore have great influence on the stress and deformation of the whole string. The influence of the multi-Packer on the mechanical behavior of the string should be considered in the design and safety evaluation of the multi-Packer composite pipe string.
【作者單位】： "油氣藏地質(zhì)及開發(fā)工程"國家重點實驗室西南石油大學;中海石油(中國)有限公司湛江分公司;
【基金】：國家科技重大專項(2016ZX05028001-006,2016ZX05017-003) 四川省科技廳項目(2016JQ0010) 四川省省屬高�？萍紕�(chuàng)新團隊建設計劃(13TD0026)
【分類號】：TE925.3

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