膨胀波纹管端头整形装置的研制及应用

发布时间：2018-01-14 21:37

本文关键词：膨胀波纹管端头整形装置的研制及应用　出处：《石油钻探技术》2017年03期 　论文类型：期刊论文

【摘要】：膨胀波纹管端头形状差异大,焊接时错边量较大,导致焊缝强度低,而采用常规整形工具整形存在工具被卡风险大的问题,为解决这一问题,研制了膨胀波纹管端头整形装置。该装置采用加热波纹管的方法提高管材韧性;内模具采用三瓣楔形结构,分解了整形作用力,降低了模具被卡的风险;通过分析整形过程中内模具的受力,优化了内模具的长度。室内和现场试验表明:采用膨胀波纹管端头整形装置对膨胀波纹管端头进行整形,整形精度较高,可将错边量由4~5mm减小至1mm以内,降低了整形作用力和模具被卡的风险,提高了焊缝的强度和管串的承压能力。研究表明,采用膨胀波纹管端头整形装置可以减小错边量,提高焊缝的质量和强度,降低整形工具被卡的风险。
[Abstract]:The expansion of corrugated tube end shape difference, when welding misalignment is large, resulting in weld strength is low, and the conventional plastic shaping tool tool stuck risk issues, in order to solve this problem, developed the expansion bellows end device. The device adopts the method of plastic corrugated pipe heating pipe toughness improvement in the mold with three flap; wedge structure, decomposition of the shaping force, reducing the risk of mould card; by analyzing the shaping process in die stress, optimize the internal mould length. Show that the indoor and field tests using the expansion corrugated pipe end shaping device of expansion bellows end shaping plastic precision is high, can be offset is reduced from 4~5mm to less than 1mm, reducing the risk of plastic force and the die are card, improve the weld strength and bearing capacity of the pipe string. The results show that the expansion bellows at the end of the whole The shape device can reduce the wrong side amount, improve the quality and strength of the weld, and reduce the risk of the plastic tool being stuck.

【作者单位】：中国地质大学(北京)工程技术学院;中国石化石油工程技术研究院;
【基金】：中国石化科技攻关项目“塔河油田深部复杂层段侧钻技术研究”(编号:P12072)资助
【分类号】：TE92
【正文快照】： 膨胀波纹管(expandable profile liner,EPL)是在地面将圆管成型为异形管,在井下又利用液压和机械膨胀工具恢复至圆管,可用于封隔复杂地层[1-6]。由于膨胀波纹管的端面形状特殊,管体之间的连接主要以焊接为主[7-8]。在膨胀波纹管膨胀过程中,由于焊缝与膨胀波纹管同时产生较大形

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