作者: Thomas E. Allen
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摘要: A casing string is cemented in a borehole of well. The cement prepared by introducing water and dry material into mixing vessel. are mixed the vessel to form slurry. accomplished agitating slurry cause circulate within vessel, while slurry, transmitting vibrational energy thereby aiding wetting This also aids removing entrained air from then pumped an annulus between boreholes.