Tree capless cone seal manifold
US4754813A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1987 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Mar 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87692
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is a production tree (10) with a top block (mandrel) (12) of the tree provided with a cone-shaped male connector member (14) which also functions as a manifold, and called a cone seal manifold, by having a plurality of shuttle valves (66) which, in the production mode connect umbilical hydraulic control lines (44) to valve actuator control lines (42). In the workover mode, a running tool (132) having a mating bell-shaped female connector member (134) engages the cone seal manifold (14) and moves the shuttle valves (66) to disconnect the umbilical control lines (44) from the valve actuator control lines (42) and to open the valve actuator control lines (42) to rig hydraulic control lines in the running tool (132) through the mating cone seal surfaces (134,56). Normally closed passageways (112) in the cone (56) of the cone seal manifold (14) are opened by fluid pressure from the rig control lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.