论文部分内容阅读
在目前常规套管补贴技术受补贴管本身结构影响,补贴后与套管贴紧力往往达不到要求,并且由于只有加固管上下金属锚与套管内壁实现密封,密封段较短,密封性较差。而膨胀管加固是由于膨胀管本体塑性变形膨胀紧贴于套管内壁实现加固,因此膨胀管与套管之间的锚定力较大,节省了套管空间,因此使得加固后内通径达到φ108mm以上的技术难题得以解决。且大大缩短施工周期,降低大修成本,为解决错断井加固提供了新思路,且具有推广价值,文中详细介绍该技术的特点。
At present, the conventional casing subsidy technology is affected by the structure of the subsidized pipe itself. After the subsidy, the tightness with the casing often can not meet the requirements. Since only the upper and lower metal anchors of the reinforcing pipe and the inner wall of the casing achieve sealing, the sealing section is short and the sealing property Poor. However, the expansion pipe is reinforced because the expansion pipe body is plastically deformed and expanded and closely adhered to the inner wall of the pipe to reinforce the pipe. Therefore, the anchoring force between the expansion pipe and the pipe sleeve is large, which saves casing space, thereby achieving the inner diameter after reinforcement φ8mm above technical problems can be solved. Which greatly shortens the construction period and reduces the overhaul cost, provides a new idea for resolving the fault reinforced well and has the promotion value. The article details the characteristics of the technology.