Multiple-bed solution mining of an inclined structure
US4418960A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Nov 4, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Solution mining method particularly adapted for recovery of potash and the like from multiple beds of relatively thin, inclined strata at substantial depths. Dissolution of each ore strata overlain by an insoluble and impermeable strata takes place through a single borehole in sequential order beginning with the deepest ore strata. Water is injected down a borehole at a predetermined rate and, being much less dense than present brine, flows in an updip direction along the top of the cavity to the forward mining face remote from the drill hole. Loaded, heavy brine flows downdip along the bottom of the cavity to an outflow pipe communicating with the bottom of the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.