Subsea tool launching equipment
US4706756A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Apr 4, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/076
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A subsea pumpdown tool launcher is provided which permits pumpdown operations without requiring riser access from the surface. The launcher includes an entry valve connected to an upper connection of a fluid circulation line which is, in turn, connectable to a pump. An unrestricted riser section is connected to the lower connection of the circulation line. The bottom of this riser section attaches to the top of a second valve for the exit or entry of a pumpdown tool to or from a subsea wellhead. The bottom of the second valve is connected to the top of a lower connection of the fluid circulation line. The bottom of the lower connection is connected to the top of a subsea wellhead assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.