组合缝筛管加工技术及装备研究

发布时间：2018-04-17 17:47

本文选题：组合缝割缝筛管 + 激光切割　；参考：《天津大学》2015年硕士论文

【摘要】：割缝筛管是石油完井工程采油防砂用的工具,通常一口井要用几百米到上千米。割缝筛管以其管缝同体刚性好、抗刮磨、采收率高、比其他方式防砂效果好等优点被广泛应用。目前,国内外普遍使用的割缝筛管缝型为矩形缝及梯形缝,这两种缝型分别存在容易产生砂堵或缝隙耐磨蚀性差等缺陷。石油产业进步,迫切需要高产能、低成本的产品。本文设计了两种组合缝筛管缝型,吸收矩形缝和梯形缝各自的优点,研制出新缝型结构的割缝筛管。将激光热加工、铣削冷加工和塑性加工几种手段结合起来,提出了激光割缝+缩缝和铣刀割缝+挤缝两种加工方法。一根割缝筛管要切割上万条缝隙,激光切割头要往复摆动两万余次,同时还要快速变焦,传统的激光切割头不能满足要求,特研制出摆动式可调焦激光切割头,解决了高速摆动和变焦的难题。还研制出数控缩缝机、数控多刀铣床、数控挤缝机等专用设备,解决了高效率割缝和塑性加工的难题。通过反复试验,优化工艺参数,加工出合格的组合缝筛管,进行了质量检测,制定出企业生产和检验标准,在天津市质量技术监督局备案。本文还对石油套管、矩形缝筛管、组合缝筛管进行大量的力学性能试验,得出组合缝筛管作为高端产品,具备优良的性能,能够替代传统的矩形缝和梯形缝筛管,满足完井工程实际工况要求。
[Abstract]:Slit sieve pipe is a tool for sand control in oil completion projects. It usually takes several hundred meters to thousands of meters for a well.Slit sieve pipe is widely used because of its advantages of uniform rigidity, good abrasion resistance, high oil recovery and better sand control effect than other methods.At present, the slit sieve pipe type widely used at home and abroad is rectangular and trapezoidal seam. These two kinds of slits have defects such as easy to produce sand plugging or poor wear resistance and corrosion of slot, etc.Oil industry progress, the urgent need for high capacity, low-cost products.In this paper, two kinds of combined seams are designed to absorb the advantages of rectangular seams and trapezoidal seams, and a new slit sieve pipe with new slit structure is developed.By combining laser hot machining, milling cold machining and plastic machining, two machining methods, laser slit shrinkage and milling cutter slot extrusion, are proposed.A slit sieve pipe needs to cut tens of thousands of cracks, the laser cutting head has to swing back and forth more than 20,000 times, and at the same time it must change its focus quickly. The traditional laser cutting head cannot meet the requirements, so a swing focusing laser cutting head has been specially developed.The problem of high speed swing and zoom is solved.The special equipment, such as NC shrinkage machine, NC multi-cutter milling machine and CNC extruding machine, is developed, which solves the problem of high efficiency slit and plastic machining.Through repeated tests, optimization of technological parameters, processing of qualified combined seam sieve tubes, quality inspection, production and inspection standards of enterprises were worked out, and recorded in Tianjin quality and Technical Supervision Bureau.In this paper, a large number of mechanical performance tests on oil casing, rectangular slit sieve pipe and composite sewn sieve pipe are carried out. It is concluded that the combined sewn sieve pipe as a high-end product has excellent performance and can replace the traditional rectangular and trapezoidal sieve pipe.To meet the actual conditions of completion engineering requirements.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE925.3

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