- 专利标题: Surface layer conductor running tool for deep-water well drilling
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申请号: US15270537申请日: 2016-09-20
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公开(公告)号: US09631450B2公开(公告)日: 2017-04-25
- 发明人: Baojiang Sun , Ning Zhang , Hao Li , Yonghai Gao , Guomin Yan , Mingzhao Huang , Shuang Xu
- 申请人: China University of Petroleum (East China)
- 申请人地址: CN Shandong
- 专利权人: China University of Petroleum (East China)
- 当前专利权人: China University of Petroleum (East China)
- 当前专利权人地址: CN Shandong
- 代理机构: Calfee, Halter & Griswold LLP
- 优先权: CN201510365639 20150930
- 主分类号: E21B7/12
- IPC分类号: E21B7/12 ; E21B33/038 ; E21B19/00
摘要:
The present invention relates to offshore oil and gas exploration drilling field and, in particular, to a surface layer conductor running tool for deep-water well drilling, which is used to run a conductor to a designated position, so that the drill stem can be released and the drilling can be continued. The surface layer conductor running tool for deep-water well drilling comprises a mandrel, an inner sleeve, an outer sleeve, and a main body, wherein the inner sleeve, the outer sleeve, and the main body are fitted over the mandrel sequentially; the inner sleeve can slide up and down but cannot rotate in relation to the mandrel, the outer sleeve and the inner sleeve are connected via a transmission thread pair, and the main body is situated on the inner sleeve; a retaining pawl penetrating the main body and radially slidable in horizontal direction; and an anti-rotation pin penetrating the main body and the outer sleeve, so that the outer sleeve can move up and down in the main body only, but cannot rotate.