Downhole injection assembly having an annular orifice
US9238957B2 · kind B2 · utility
2Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Jul 1, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole injection apparatus having a sleeve disposed in a tubular housing. The sleeve and housing define an annular orifice through which steam flows prior to injection into the wellbore. Water condensate collects at the orifice or restriction proximate the orifice and is mixed with or entrained into the flow of steam. The sleeve preferably has a plurality of generally radial ports such that steam flows from interior the sleeve to the annulus. Preferably the injection ports and sleeve ports are angled to reduce or eliminate radical changes in direction of the steam flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.