Control device for an inflatable tool for the treatment of a well or a pipeline
US8291984B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Sep 9, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/127
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to device for controlling an inflatable tool used to treat a well or pipeline. The device, which is inserted between the outlet of a fluid supply pipe and the tool, comprises: a chamber communicating with the exterior through a tube and with the tool via a pipeline; and a piston mounted in said chamber, which, under the force of a spring, normally occupies a first position in which it seals the outlet of the pipe, the aforementioned tube then communicating with the pipeline. The pipeline is provided with at least one spring-loaded check valve which allows the passage of the pressurized fluid from the chamber to the tool when the pressure upstream of the valve exceeds a predetermined threshold value, which prevents the passage of the fluid in the opposite direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.