| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 12.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Method for removing deposits comprising heavy hydrocar bonaceous materials & finely divided inorganic particulate materials from a tubing in water injection well, the method comprising a) Injecting aq surfactant compn comprising an aq soln contg - Alkyl (8-19C) polyglycoside surfactant (0.1-10%) - Ethoxylated alc (0.1-10%) - Caustic (0.5-10%) - Alkyl (4-6C) alc (0.1-6%) b) Retaining compn in tubing for selected period of time c) Injecting aq soln through the tubing |
| PATENT PHOTOCOPY | Available on request |
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