Bentonite Suspension Filtration and its Electro-Kinetics in the Presence of Additives
| Autor: | R. M. Farag, S. E. El-Mofty, A. M. Salem, Ayman A. El-Midany |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Chemistry
020209 energy General Chemical Engineering Kinetics 02 engineering and technology General Chemistry Condensed Matter Physics Bentonite suspension law.invention 020401 chemical engineering Chemical engineering law 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Filtration |
| Zdroj: | Tenside Surfactants Detergents. 58:121-126 |
| ISSN: | 2195-8564 0932-3414 |
| DOI: | 10.1515/tsd-2020-2257 |
| Popis: | Invasion of fluids into porous media during drilling can lead to irreparable damage and reduced well productivity. Hence, minimizing the filtration loss of the drilling fluid into the formation is very important. The stability of colloidal suspensions plays a crucial role in controlling the interfacial forces and consequently on minimizing the filtration. The zeta potential is an indicator of the stability of colloids with respect to their electrostatic interactions. In this study, the rheological properties of bentonite suspensions are investigated with and without additives. The starch and CMC were used as additives to enhance the rheological properties of bentonite. The effects of these additives on the drilling fluid filtration were examined. Zeta-potential, viscosity, gel strength and yield point were measured to characterize the extent to which control of the filtration loss of the drilling fluids can be achieved. The zeta-potential and the amount of filtration loss of water-bentonite suspensions were correlated. Finally, the results showed that the addition of either starch or carboxymethyl cellulose (CMC) enhances the filtration properties of water-bentonite suspensions. |
| Databáze: | OpenAIRE |
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