Fluid pressure measuring apparatus for incorporation into a pipeline rising from a well
US4316386A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1980 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Mar 18, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fluid-pressure measuring means for a well, which is adapted to be coupled into adjacent sections of a delivery or riser pipe in the area of the environment in which pressure is to be measured, having two concentric pipes, the inner one being in communication with the environment through a conduit extending through the annular space between the pipes, a valve within the inner pipe to close the conduit, and a pressure sensing device that can be lowered into the inner pipe to open the valve and close off a chamber within the inner pipe to sense the environmental pressure then prevailing in the chamber. The valve is spring biased to closed position and opens under the force of the weight of the pressure sensing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.