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Lost Circulation (Lost Returns)

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  4. Lost Circulation (Lost Returns)

Definition(s)

Lost Circulation (Lost Returns)

The loss of whole drilling fluid to the wellbore.

Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global Standards

Global Standards, LArafat Hoque

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