Oil recovery from an oil-water well
US4019576A · kind A · utility
9Cited by
7References
2Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Nov 23, 1973 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Nov 23, 1993 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention relates to the recovery of oil from an oil well which normally produces a mixture of oil and water. The invention is carried out by determining the potential free water level in the well bore, draining the oil gravitationally from a point above the predetermined water level, and withdrawing the drained oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.