The most common complication was pin infection, and 2 cases refractured at the docking site.
最常见的并发症为针道感染，2例在外固定支架拆除后对接点再骨折。
2
There are many factors that affecting refractured well selection and the relationships of them are complex existing certain fuzziness.
影响重复压裂选井的因素很多，各因素之间关系复杂且存在一定的模糊性。
3
It is difficult to evaluate the failure extent of previous fractures in refractured gas Wells, which results in a big error in productivity prediction.