M00044688
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API Spec 16A Specification for Drill Through Equipment, Fourth Edition, Includes Errata 1 (2017), Addendum 1 (2017)
standard by American Petroleum Institute, 04/01/2017
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API SPECIFICATION 16A FOURTH EDITION, APRIL 2017
EFFECTIVE DATE: OCTOBER 1, 2017
API publications necessarily address problems of a general nature. With respect to particular circumstances, local, state, and federal laws and regulations should be reviewed.
Neither API nor any of API's employees, subcontractors, consultants, committees, or other assignees make any warranty or representation, either express or implied, with respect to the accuracy, completeness, or usefulness of the information contained herein, or assume any liability or responsibility for any use, or the results of such use, of any information or process disclosed in this publication, or represent that its use would not infringe upon privately owned rights.
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API publications may be used by anyone desiring to do so. Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any authorities having jurisdiction with which this publication may conflict.
API publications are published to facilitate the broad availability of proven, sound engineering and operating practices. These publications are not intended to obviate the need for applying sound engineering judgment regarding when and where these publications should be utilized. The formulation and publication of API publications is not intended in any way to inhibit anyone from using any other practices.
Any manufacturer marking equipment or materials in conformance with the marking requirements of an API standard is solely responsible for complying with all the applicable requirements of that standard. API does not represent, warrant, or guarantee that such products do in fact conform to the applicable API standard.
Users of this specification should not rely exclusively on the information contained in this document.
Sound business, scientific, engineering, and safety judgment should be used in employing the information contained herein.
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Copyright © 2017 American Petroleum Institute
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Shall: As used in a standard, “shall” denotes a minimum requirement in order to conform to the specification.
Should: As used in a standard, “should” denotes a recommendation or that which is advised but not required in order to conform to the specification.
This document was produced under API standardization procedures that ensure appropriate notification and participation in the developmental process and is designated as an API standard. Questions concerning the interpretation of the content of this publication or comments and questions concerning the procedures under which this publication was developed should be directed in writing to the Director of Standards, American Petroleum Institute, 1220 L Street, NW, Washington, DC 20005. Requests for permission to reproduce or translate all or any part of the material published herein should also be addressed to the director.
Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A one-time extension of up to two years may be added 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, 1220 L Street, NW, Washington, DC 20005.
Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW, Washington, DC 20005, standards@api.org.
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Page
Scope 1
Normative References 4
Terms, Definitions, Acronyms, and Abbreviations 6
Terms and Definitions 6
Acronyms and Abbreviations 15
Design Requirements 16
Size Designation 16
Service Conditions 17
Equipment-specific Design Requirements 19
Design Methods 37
Design Validation 39
Documentation 41
Tests for BOP and Hydraulic Connector Operational Characteristics 42
PR1 Operating Manual Requirements 78
PR2 Operating Manual Requirements 79
Technical Data Sheet 81
Material Requirements 81
General 81
Written Specifications 81
Pressure-containing parts 82
Pressure-controlling Parts 88
Welding Requirements 89
General 89
Weldment Design and Configuration 90
Welding Controls 93
Welding Procedure and Performance Qualifications 95
Other Requirements 96
Quality Control Requirements 101
General 101
Measuring and Testing Equipment 101
Quality Control Personnel Qualifications 101
Quality Control Requirements for Equipment and Parts 102
Quality Control Requirements for Specific Equipment and Parts 102
Requirements for Quality Control Records 115
Failure Reporting 117
Marking Requirements 117
General 117
Types of Identification Stamping 117
Specific Codification Requirements of Equipment 117
Product Description Code (PDC) 120
Storing and Shipping 122
Storing for Periods Greater than 30 Days 122
Shipping 123
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Page
Annex A (informative) API Monogram Program—Use of the API Monogram by Licensees 124
Annex B (normative) Qualification of Heat-treating Equipment 128
Annex C (informative) Purchasing Guidelines 131
Annex D (normative) Failure Reporting 133
Annex E (normative) Minimum Requirements for Certificate of Conformance (COC) 134
Annex F (normative) Charpy V-notch Impact Test Location for Weld Qualification 138
Annex G (informative) Conversion of U.S. Customary Units to the SI System (Metric) 140
Bibliography 144
Figures
Simplified Example of Surface Drill-through Equipment 2
Simplified Example of Subsea Drill-through Equipment 3
Type 16B and 16BX Integral Hub Connections 24
Type 16B and 16BX Blind Hubs 25
Rough Machining of Type SR Ring Grooves 26
Finish Machining of Type SR Ring Grooves. 27
Clamps for Type 16B and 16BX Hub Connections 34
Connector Capacity Chart 40
Equivalent Round Models 87
Typical Weld Grooves for Pipe Butt Joints. 91
Typical Attachment Welds 92
Typical Repair Welds 93
Typical Excavation for Repair Welds 93
Rockwell Hardness Test Locations 97
Hardness Test Locations for Weld Overlay 98
Vickers Hardness Test Locations 99
Thermocouple Locations—Rectangular Furnace (Working Zone) 129
Thermocouple Locations—Cylindrical Furnace (Working Zone) 129
E.1 Example Certificate of Conformance 136–137
F.1 Location of Charpy V-notch Impact Test 139
G.1 Metric Conversions 141
Tables
Equipment Size 17
Equipment Rated Working Pressures 17
Temperature Ratings for Metallic Materials 18
Temperature Ratings for Nonmetallic Sealing Materials 18
Pressure Rating and Size Ranges of API 6A Flange Connectors 19
Bolting Requirement 21
Pressure Ratings and Size Ranges of Type 16B and 16BX Hubs 23
Type 16B Integral Hub Connections for 13.8 MPa (2,000 psi) Rated Working Pressure 23
Type 16B Integral Hub Connections for 20.7 MPa (3,000 psi) Rated Working Pressure 24
Rough Machining of Type SR Ring Grooves 25
Finish of Machining of Type SR Ring Grooves 26
Type 16BX Integral Hub Connections for 34.5 MPa (5,000 psi) Rated Working Pressure 28
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Page
Type 16BX Integral Hub Connections for 69.0 MPa (10,000 psi) Rated Working Pressure 29
Type 16BX Integral Hub Connections for 103.5 MPa (15,000 psi) Rated Working Pressure 30
Type 16BX Integral Hub Connections for 138.0 MPa (20,000 psi) Rated Working Pressure 31
Clamps for Type 16B and 16BX Hub Connections 32
Ring Gasket Numbers for API 6A/16A Equipment 35
Required Tests and Performance Criteria for Ram BOPs 42
Test Mandrel Pipe Size(s) for Ram Testing. 43
Required Tests and Performance Criteria for Fixed Bore Pipe Rams and Blind Rams 44
Required Tests and Performance Criteria for Variable Bore Pipe Rams 44
Required Tests and Performance Criteria for Blind Shear Rams 45
Shear Pipe Requirements 45
Required Tests and Performance Criteria for Non-Sealing Shear Rams 46
Required Tests and Performance Criteria for Annular BOPs 46
Test Mandrel Pipe Size(s) for Annular Packers 47
Required Tests and Performance Criteria for Annular Packers 47
Required Tests and Performance Criteria for Hydraulic Connectors 47
Material Property Requirements for Metallic Pressure-Containing Parts 82
Material Applications for Metallic Pressure-Containing Parts 83
Steel Composition Limits (% Mass Fraction) for Pressure-containing Parts 84
Alloying Element Range—Maximum Tolerance Requirements 85
Acceptance Criteria for Charpy V-notch Impact Tests 85
Adjustment Factors for Sub-size Impact Specimens 86
Chemical Composition of the Nickel-based Alloy N06625 100
Minimum Hardness Requirements 103
Weld Inclusion Criteria 107
Weld Inclusion Criteria 110
Hydrostatic Test Pressures 112
Pipe Size Requirements 113
Marking Requirements and Location 118
Code System for Nonmetallic Sealing Materials 119
Elastomer Compound Marking Code 120
Product Description Code 120
Equipment Type 121
API Equipment Size Designation 121
Rated Working Pressure 122
Temperature Ratings (Metallic Materials) 122
C.1 Manufacturing Data Book (MDB) 132
Pressure Ratings 142
Nominal Sizes 143
Specification for Drill-through Equipment
This specification defines the requirements for performance, design, materials, testing and inspection, welding, marking, handling, storing, and shipping of drill-through equipment used for drilling for oil and gas. It also defines service conditions in terms of pressure, temperature, and wellbore fluids for which the equipment is designed.
This specification is applicable to and establishes requirements for the following specific equipment:
ram blowout preventers;
ram blocks, packers, and top seals;
annular blowout preventers;
annular packing units;
hydraulic wellbore connectors (wellhead, riser, or LMRP);
drilling spools and spacer spools;
adapters;
mandrels (for wellbore connectors);
loose connections;
clamps.
Dimensional interchangeability is limited to end and outlet connections.
A simplified example of drill-through equipment defined by this specification is shown in Figures 1 and 2.
Repair and remanufacture of 16A equipment is covered in API 16AR, Standard for Repair and Remanufacturing of Drill-through Equipment.
This specification does not apply to field use or field testing of drill-through equipment.
If a product is supplied bearing the API Monogram and manufactured at a facility licensed by API, the requirements of Annex A apply.
2 API SPECIFICATION 16A
Figure 1—Simplified Example of Surface Drill-through Equipment
SPECIFICATION FOR DRILL-THROUGH EQUIPMENT 3
UPPER
ANNULAR
LOWER
ANNULAR
LMRP OR RISER
CONNECTOR
MANDREL
BLIND SHEAR RAM
CASING SHEAR RAM
UPPER
PIPE RAM
LOWER PIPE RAM
FLANGE OR HUB CONNECTION
WELLHEAD CONNECTOR
Figure 2—Simplified Example of Subsea Drill-through Equipment