膨土岩遇水会明显膨胀，此性质可理想地保护地层免受钻井泥浆侵害。
Bentonite swells considerably when exposed to water, making it ideal for protecting formations from invasion by drilling fluids.
膨土岩遇水会明显膨胀，此性质可理想地保护地层免受钻井泥浆侵害。
Bentonite swells considerably when exposed to water, making it ideal for protecting formations from invasion by drilling fluids.
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