Well uplift system
US5562159A · kind A · utility
7Cited by
15References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Jan 9, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of raising material, such as production fluid (6), from a bore hole (3) involves pumping water down a pipe (7) to a fluidising unit (A) so that the water activates and entrains the material and carries it up through a discharge conduit (8) to a separator (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.