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US5470822A Low-toxicity invert emulsion fluids for well drilling 失效
低毒反相乳液用于钻井

Low-toxicity invert emulsion fluids for well drilling
摘要:
Low-toxicity invert emulsion fluids for well drilling are disclosed. The fluids comprise a non-hydrocarbon, non-mineral oil continuous phase and a dispersed aqueous phase. The continuous phase materials of the invention pass the 48 hour, LC50 Mysidopsis bahia bioassay test protocol.
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