Methods of extracting liquid hydrocardon contaminants from underground zones
US6413016B1 · kind B1 · utility
10Cited by
25References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2000 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Aug 17, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/908
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods of extracting liquid hydrocarbon contaminants from underground zones are provided. The methods are basically comprised of the steps of introducing a hot purge gas into an underground zone containing a pool of liquid hydrocarbon contaminants whereby light liquid hydrocarbons in and around the pool are evaporated and dense liquid hydrocarbons in the pool are evaporated to some extent, charred, auto-ignited and combusted, and removing the hot purge gas, the evaporated light liquid hydrocarbons and combustion gases from the combustion of the dense liquid hydrocarbons in the zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.