Olefin sulfonate-improved steam foam drive
US4562727A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1984 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Nov 21, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/0806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Steam mobility-reducing capability of an olefin sulfonate-containing surfactant formulation for reducing the mobility of steam of a selected quality within a selected subterranean oil-containing reservoir is tested. Steam of the selected quality and a steam-containing fluid which has substantially the same quality containing the surfactant formulation, an electrolyte and a noncondensable gas upflow through columns of permeable porous mediums containing the reservoir oil. The mass flow rates through the columns are substantially equivalent to a selected flow rate in a near-well portion of the reservoir. Steady-state pressure within the columns are measured and the permeability reducing factor of the surfactant formulation is calculated from the pressure measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.