| Autor: |
Julianna Lakatos-Szabo, B. Kosztin, Istvan Lakatos, Gy. Palasthy, János Tóth, H. Wöltje |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
All Days. |
| DOI: |
10.2118/78307-ms |
| Popis: |
A novel method based on injection of silicone microemulsion was developed for restriction of water production in gas wells. The treating solution was a surfactant stabilized siloxane emulsion which was driven into the formation by water and nitrogen. According to the laboratory studies disproportional permeability modification is in the background of the water retention. The phenomena is attributed to inversion of microemulsion to macroemulsion initiated by spontaneous dilution by water and then entrapping of formed siloxane droplets by the pores. The method was tested at the largest Hungarian gas field (Algyő field, Hungary). Evaluation of the pilot test has definitely proved the beneficial effect of silicone injection on gas production and gas/water ratio: the gas production tripled and lasted for at least a half year. The encouraging results urged the operator to continue both the laboratory and the field tests with the aim at developing a method which might be used routinely in low permeable, tough gas fields and underground gas storage. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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