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Standard [CURRENT]
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This standard specifies requirements and gives recommendations for the six classes A, B, C, D, G and H of well cements, including their chemical and physical requirements and procedures for physical testing of well cement classes. German Working Group NA 109-00-01-03 AK "Bohrspülung und Zemente - Spiegelausschuss zu ISO/TC 67/SC 3" ("Drilling and completion fluids, and well cements - Mirror Committee for ISO/TC 67/SC 3") of Petroleum and Natural Gas Industries Standards Committee (NÖG) has collaborated in the preparation of this standard.
This document replaces DIN EN ISO 10426-1:2007-01 .