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16、 Standards Department,API,200 Massachusetts Avenue NW,Suite 1100,Washington,DC 20001,standardsapi.org.iii1 Scope.12 References.13 Terms,Definitions,and Abbreviations.13.1 Terms and Definitions.13.2 Abbreviations.34 Purpose and Applications of Stage Cementing Collars.44.1 General.44.2 Cementing Across a Potential Loss Zone.44.3 Two-stage Cementing.54.4 Three-stage Cementing or More Stages.74.5 Discontinuous Cement Intervals.74.6 Reducing Post-cementing Annular Flow Potential.74.7 Off-bottom Cemen
