本文介绍了在5in生产套管中安装膨胀管补贴的三种不同应用。先期由于腐蚀泄露已经关井的Wyoming与Texas 2口气井的试验中,分别安装了2530ft和8380ft的修复管。第三次修复应用在新井上,205ft的修复管修复了由于射孔误操作造成的套管孔洞。3口井全部成功通过压力测试,可以进行酸化压裂生产。在由常规石油管材(OCTG)组成的尾管底部,该产品提供了高强度、大直径膨胀密封系统。系统的独特之处在于心轴涨开与密封系统合为一体,所承受的内压力、抗挤压力和常规OC-TG尾管相同。液压坐封工具的动力将胀开心轴推入补贴体中,其动力经由工作管柱,由高压、小排量的泵输送。该产品的最初开发为一次起下作业,目前经简化提高了可靠性,现可以进行两次起下钻作业。首先,安装底部膨胀密封和抛光孔座,然后将带有上部密封的隔离管柱插入下部抛光孔座,上部密封系统胀开密封。该产品的多功能性在于上部膨胀密封系统提供了抛光孔座,从而实现尾管、生产油管或其他的贴片进行回接。本文重点强调了施工设计及作业施工,包括套管检测测井、遇见的问题、系统的改进以及较好的应用结果。 This article describes three different applications for installing expansion tube subsidies in a 5in production casing. The 2530-ft and 8380-ft prostheses were installed during the pre-rig tests of the Wyoming and Texas 2 gas wells that had been shut-in due to corrosion leaks. The third repair application in the new wells, 205ft of repair pipe to repair due to perforating holes caused by misoperation. All 3 wells successfully passed the pressure test and can be acidified and fractured. At the bottom of the tailpipe consisting of conventional petroleum tubing (OCTG), this product provides a high strength, large diameter expansion seal system. The unique feature of the system is that the mandrel is unfolded in a single piece with the sealing system, subjecting it to the same internal pressure and crush pressure as a conventional OC-TG tail pipe. The power of the hydraulic setting tool pushes the expanding mandrel into the subsidized body, and its power is delivered by the high pressure, small displacement pump via the working string. Originally developed as a single start-up, the product has been simplified to improve reliability and is now ready for drill-down operations twice. First, install the bottom expansion seal and polished hole seat, and then insert the isolation pipe with the upper seal into the lower polishing hole seat. The upper seal system expands and seals. The versatility of this product is that the upper expansion seal system provides a polished hole seat to allow tailpipes, production tubing or other patches to be patched back. This article focuses on the construction design and job construction, including casing inspection logging, problems encountered, system improvements and better application results.