Valve and lubricator apparatus
US4062406A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Oct 15, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve and lubricator apparatus are provided for installation of tools on wire line and the like for use in an oil or gas well while controlling fluids therethrough. The apparatus has valve means having a passageway therethrough for control of fluids through the apparatus. First fluid activatable means are provided for first shifting of the valve means to closed position. Second fluid activatable means also are provided for second shifting of the valve means to the open position. Means for locking the valve in closed position are provided to prevent shifting of the valve to open position by operation of the first fluid means. The second fluid means are operational to unlock the valve means from the closed and locked positions and to shift the valve to open position. The first and second fluid means and the locking means are repeatably and sequentially operational.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.