1、Specification forDrilling and WellServicing StructuresAPI SPECIFICATION 4FSECOND EDITION,JUNE 1,1995REAFFIRMED,FEBRUARY 1,2001American Petroleum Institute1220 L Street,NorthwestWashington,D.C.20005Obtained from GLOBAL ENGINEERING DOCUMENTSCONTENTSPageFOREWORD1 SCOPE.11.】Purp0se1.2 Product Specificat
2、ion Levels.*4444444444444444444444444444*11.3Supplementary Requirements.12REFERENCES.12.】Standards.12.2Other References.23 DEFINITIO八NS4a24 MARKING AND INFORMATION.34.1 Nameplate.34.2Mast and Derrick Nameplate Information.34.3Substructure Nameplate Information.34.4Crown Block Assembly Nameplate Info
3、rmation.35 STANDARD RATINGS.35.1Derrick-Stationary Base45.2Mast with Guy Lines.5.3Mast without Guy Lines.45.4 Mast and Derricks Under Dynamic Conditions.5.5Substructures.45.6Substructure Under Dynamic Conditions45.7Crown Block Assembly.6 DESIGN L0 ADIN46.1Derrick-Stationary Base.46.2 Mast with Guy L
4、ines.56.3 Mast without Guy Lines.56.4Derricks and Mast Under Dynamic Conditions56.5Substructures.66.6Substructure Under Dynamic Conditions.66.7Guide Tracks and Dollies.66.8Crown Block Assemblies67DESIGN SPECIFICATION67.1Allowable Stresses.67.2Wind77.3Dynamic Loading.87.4 Earthquake87.5Design Verification.88MATERIALS.88.1Written Specifications.88.2Mechanical Properties.88.3 Material Qualification.88.4Material Manufacture.8.5Bolts98.6Wire Rope99WELDING REQUIREMENTS99.1General.9Obtained from GLOBAL ENGINEERING DOCUMENTSOPTION name-SESSION/18T8N55Ri0012303977961804717OPTION name
