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Hydraulic Circulating Valve
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3 1/8″ :
3 7/8″ :
5″ :
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The hydraulic circulating valve is a full-diameter circulating tool, which can be connected above or below the tester. When connected below the tester, the hydraulic circulating valve is used as a bypass of the packer, which can reduce the suction effect of the tool during drilling and running. When connected above, the hydraulic circulation valve is used as a circulation valve to test and circulate the formation fluid stored in the string. The hydraulic circulation valve is composed of a delay part composed of a metering outer cylinder and a metering sleeve and a by-pass part composed of a circulating outer cylinder and a circulating sleeve.
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