Method for producing temperature-resistant organically modified bentonite
The invention relates to a method for producing temperature-resistant organically modified bentonite, comprising a step of carrying out organic modification on sodium bentonite by utilizing quaternary ammonium salt. The production method is characterized by also comprising a step of modifying the so...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a method for producing temperature-resistant organically modified bentonite, comprising a step of carrying out organic modification on sodium bentonite by utilizing quaternary ammonium salt. The production method is characterized by also comprising a step of modifying the sodium bentonite by utilizing stearic acid fatty acid or poly fatty acid. Based on a semi-dry method, the invention modifies the sodium bentonite by adding a proper amount of the stearic acid fatty acid or the poly fatty acid during the production process, the finally obtained product has good temperature resistance, after being subject to 16h of hot-roll aging at the temperature of 150 DEG C, the prepared drilling fluid slurry still has more than 80% of the initial viscosity. |
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