Pneumatic fracturing and multicomponent injection enhancement of in situ bioremediation
US5560737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1995 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Aug 15, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C2101/00
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method and apparatus are disclosed for reducing or eliminating non-naturally occurring, subsurface, liquid contaminants from one or more soil formations, which involves the steps of pneumatically fracturing the soil formation to produce a fracture network; simultaneously or subsequently inserting into said fracture network and throughout adjacent portions of the soil formation, a pressurized gas stream, and introducing into the pressurized gas stream a mixture of one or more liquid amendments, wherein said pressurized gas, in conjunction with said liquid amendments, has an oxygen or other electron acceptor content sufficient to promote the growth of aerobic or other microorganisms in said fracture network, and wherein the pressurized gas has a sufficiently high gas to liquid ratio to atomize the liquid amendments, whereby the amendments are distributed throughout the soil formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.