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Process for the secondary and tertiary recovery of petroleum
Process for the secondary and tertiary recovery of petroleum
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机译:石油的二次和三次采油工艺
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摘要
Improved secondary and tertiary oil recovery process in which water- soluble, salt-insensitive, block polymers of the A-B-A type wherein the A block is derived from a water-soluble monomer and the B block is derived from N- vinyl pyrrolidone are used as viscosity control agents.
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