Fluid injection system
US6973936B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 2, 2003 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Jul 15, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86558
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid injection system controls the distribution of fluid from a supply line to a selected well at an adjustable rate. A fluid barrier divides a cylinder into first and second chambers. A multi-position valve comprises a first position for passing fluid from the supply line into the first chamber to displace fluid from the second chamber back through the valve to an injection point, and a second position for passing fluid from the supply line to the second chamber to displace fluid from the first chamber back through the valve to the injection point. A control system in communication with a position sensor times displacement of the fluid barrier to selected positions, and selectively adjusts a variable valve opening to adjust flow rate, switch between the first and second positions, and periodically increase the valve opening for cleaning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.