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Improved water-based drilling fluids for reduction of water adsorption and hydration of argillaceous rocks
Improved water-based drilling fluids for reduction of water adsorption and hydration of argillaceous rocks
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机译:改进的水性钻井液,可减少泥质岩的水吸附和水合作用
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摘要
The present invention provides a water-based drilling fluid that reduces water adsorption and hydration of argillaceous rocks. The drilling fluid comprises a glycol with a molecular weight of less than about 200, an organic cationic material such as salts of choline or an organic salt of potassium, a filtration control agent, a viscosifier and water.
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