1、 Drilling Fluids Materials API SPECIFICATION 13A NINETEENTH EDITION,OCTOBER 2019 API MONOGRAM PROGRAM EFFECTIVE DATE:OCTOBER 1,2020 ADDENDUM 1,APRIL 2020 ADDENDUM 2,JUNE 2022(API MONOGRAM PROGRAM EFFECTIVE DATE:DECEMBER 1,2022)Special Notes API publications necessarily address problems of a general
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15、ded to this review cycle.Status of the publication can be ascertained from the API Standards Department,telephone(202)682-8000.A catalog of API publications and materials is published annually by API,200 Massachusetts Avenue,Suite 1100,Washington,DC 20001.Suggested revisions are invited and should b
16、e submitted to the Standards Department,API,200 Massachusetts Avenue,Suite 1100,Washington,DC 20001,standardsapi.org.iii Contents Page 1 Scope.1 2 Normative References.1 3 Terms,Definitions,Symbols,and Abbreviations.1 3.1 Terms and Definitions.1 3.2 Symbols.2 3.3 Abbreviations.5 4 Requirements.5 4.1 Quality Control Instructions.5 4.2 Use of Test Standard Materials in Checking Testing Procedures.5 4.3 Records Retention.5 5 Calibration.6 5.1 Coverage.6 5.2 Equipment Requiring Calibration.6 5.3 Cal
