玛湖地区是重要的非常规油气聚集区块。在开发过程中发现，压力窜逸引起套管变形损坏，常规套管修复工具无法满足修复要求。因此，设计小井眼套管整圆工具。为评价小井眼套管整圆工具的修复效果，建立套管整圆评价函数，并采用有限元方法建立ϕ127 mm套管变形模型，模拟玛湖地区因压力窜逸引起的套管变形过程，在此基础上建立膨胀锥-变形套管力学模型，模拟小井眼套管整圆工具对变形套管的无损修复过程。在模拟中，变形套管管内面积从8 354.54 mm²修复至8 500.71 mm²，管内面积平均增加约146.17 mm²，套管平均整圆效率约为53.83%。结果表明，小井眼套管整圆工具具有显著的修复效果。本技术可为井筒完整性长生命周期提供技术借鉴。

The Mahu region is an important unconventional oil and gas accumulation block. During its development, it is observed that casing deformation damage occurred due to pressure escape, and conventional casing repair tools proved inadequate for meeting the repair requirements. Consequently, a casing-shaping tool was designed. To evaluate the effectiveness of the designed tool for repairs, an evaluation function for casing repair efficiency was established. A ϕ127 mm casing deformation model was created using the finite element method to simulate the process of casing deformation resulting from pressure escape in the Mahu region. Building upon this, a mechanical model of cone expansion-deformed casing was established to simulate the non-destructive repair process using the casing repair tool for the deformed casing. In the simulation, the inner area of the deformed casing was repaired from 8 354.54 mm² to 8 500.71 mm², representing an average increase of approximately 146.17 mm². The average casing rounding efficiency was found to be approximately 53.83%. The results demonstrate the significant reparative effect of the designed casing repair tool. This technology can serve as a valuable technical reference for ensuring the long-term wellbore integrity throughout its life cycle.