Soft landing system and method of achieving same
US9347292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2015 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Jan 5, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A subsea wireline system for soft landing equipment during installation. The subsea soft landing wireline system includes coarse alignment members that can be part of a tree and interact with a funnel located on the equipment to be installed by the soft landing system. Smaller alignment members can provide fine alignment and also interact with a funnel located on the equipment to be installed. The funnels are used to trap sea water that provides a cushion for the equipment being installed. Once in alignment, trapped water can be released from the funnel via a restricted orifice or a control valve located on an ROV. The system achieves soft landing without the use of a running tool, thus reducing expense.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.