Plastic well screen and method of forming same
US4406326A · kind A · utility
28Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1981 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Dec 17, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49602
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Economical plastic well screens having good hydraulic performance can be produced by the method of the present invention wherein a sheet having a large plurality of V-shaped slots is injection molded, is roll-formed into a cylindrical shape, and then has its longitudinal edges bonded to each other. The resistance of the screen to collapse and tensile forces can be enhanced by the addition of ribs in one or two directions. Also, the sheet can be rolled in one direction or another to vary the slot direction or to permit flow from inside to outside as well as the conventional outside to inside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.