Gravity enhanced maintenance screen
US5450898A · kind A · utility
16Cited by
3References
10Claims
0Family size
Inventors
Key dates
| Filing date | May 12, 1994 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | May 12, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/184
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A maintenance screen for use in low-velocity, shallow or horizontal or slightly inclined wells is disclosed. The maintenance screen of the present invention utilizes a generally downwardly oriented portion through which fluid can pass and a generally upwardly oriented portion which does not allow sand or fluid to pass therethrough, so that sand naturally gravitates downward through the fluid and away from the portion of the screen through which the fluid may pass to enter the well tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.