一种径向预应力钻井井壁结构及其施工方法
- Affilication of Author(s):力学与土木工程学院
- Type of Patent:发明
- State of Patent:专利授权
- Application Number:201710169906.X
- Number of Inventors:7
- Service Invention or Not:no
- Application Date:2017-03-21
- Authorization Date:2020-06-30
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一种径向预应力钻井井壁结构及其施工方法