发明名称 |
COLLAPSIBLE SUBSTRUCTURE FOR A MOBILE DRILLING RIG |
摘要 |
A collapsible drilling rig substructure is transported to a drilling site while in a collapsed transportation configuration wherein a raisable floor of the substructure is in a lowered transportation position relative to a fixed drill floor such that an upper surface of the raisable floor is positioned at a first height level above a base of the substructure while an upper surface of the fixed drill floor is positioned at a second height level above the base that is greater than the first height level. The substructure is positioned adjacent to a wellbore location at the drilling site and reconfigured from the lowered transportation configuration to a raised operating configuration by raising the raisable floor to an operating position laterally adjacent to the fixed drill floor while maintaining a height level of the upper surface of the fixed drill floor at the second height level. |
申请公布号 |
US2015300091(A1) |
申请公布日期 |
2015.10.22 |
申请号 |
US201514740567 |
申请日期 |
2015.06.16 |
申请人 |
National Oilwell Varco, L.P. |
发明人 |
Konduc Kameron Wayne;Thiessen Jay John |
分类号 |
E21B7/02;E21B15/00 |
主分类号 |
E21B7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
Houston TX US |