Oil well treatment
US5893416A · kind A · utility
183Cited by
19References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 1997 |
| Grant date | Apr 13, 1999 |
| Priority date | — |
| Expiry date | Nov 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/902
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Corrosion, scale-formation, or other deleterious processes are inhibited in an oil well by installing within the oil well (10) fluid-permeable elements, such as tubular filters (20), which comprises a suppressing material. Each filter (20) comprises two tubular filter screens (24) between which is a bed (26) of particles comprising suitable inhibitor material. The particles might for example be porous ceramic spheres impregnated with the inhibitor material. The inhibitor material gradually dissolves in the well fluids during operation, and may for example inhibit corrosion and/or scale formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.