کلمه multistage cementing tool یافت شد:
n: a device that pem1its cement to be displaced in stages at two or more points above the bottom of the string. Instead of all the cement being pumped out the bottom, a stage tool allows some of the cement to be pumped out at several points above the bottom. Used in cases in which a long column of cement might cause formation breakdown if the cement were displaced from the bottom of the string.
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