Guidelines for Design and Manufacture of Surface Wellhead Running, Retrieving and Testing Tools, Clean-out Tools and Wear Bushings

API TECHNICAL REPORT 6RT FIRST EDITION, FEBRUARY 2020

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Foreword

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• the term “should” denotes a recommendation or that which is advised but not required in order to conform to the

standard;

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• the term “can” is used to express possibility or capability.

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Contents

Page

1. Scope 1

2. Normative References 1

3. Terms, Definitions, Acronyms, Abbreviations, Symbols, and Units 1

   1. Terms and Definitions 1

   2. Acronyms and Abbreviations 2

4. General 2

   1. Quality Management System 2

   2. Application 2

5. Design 3

   1. General 3

   2. Loads 3

   3. End Connections 3

   4. Vertical Bore 3

   5. Outside Profile 4

   6. Pressure Rating 5

6. Materials 6

   1. General 6

   2. Additional Requirements 6

   3. Mechanical Property Requirements 7

7. Welding 7

8. Quality Control 8

   1. Dimensional Inspection 8

   2. Functional and Hydraulic Testing 8

9. Marking 9

   1. General 9

   2. Serialization 9

10. Quality Control Record Requirements 9

    1. Conformance 9

    2. ISO 15156 (all parts) (NACE MR0175) Records Requirements 9

    3. Records Control 9

    4. Manufacturer Records 10

11. Storing and Shipping 10

    1. Thread Protection 10

    2. Draining after Testing 10

    3. Corrosion Protection 10

    4. Sealing-surface Protection 11

    5. Assembly and Maintenance Instructions 11

    6. Ring Gaskets 11

    7. Age Control of Non-metallic Materials 11

Bibliography 12

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Contents

Tables

Page

1. Minimum Vertical Full-opening Body Bores and Maximum Casing Sizes (USC Units) 4

2. Minimum Vertical Full-opening Body Bores and Maximum Casing Sizes (SI Units) 5

3. Quality Control for Welding 8

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Introduction

This technical report is derived from requirements previously found in API Specification 6A, 20th Edition. U.S. Customary (USC) units and International System (SI) units are used in this technical report.

The fractions and their decimal equivalents are equal and interchangeable. Metric conversions and inch dimensions in this technical report are based on the original fractional inch designs. Functional dimensions have been converted into the metric system to ensure interchangeability of products manufactured in metric or inch systems.

It is necessary that users of this technical report be aware that further or differing requirements can be needed for individual applications. This technical report is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This can be particularly applicable where there is innovative or developing technology. Where an alternative is offered, it is the responsibility of the vendor to identify any variations from this technical report and provide details.

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Guidelines for Design and Manufacture of Surface Wellhead Running, Retrieving and Testing Tools, Clean-out Tools and Wear Bushings

1. Scope

   
   

   This technical report provides guidance for the design, materials selection, manufacture and testing of tools and

   equipment for running, retrieving, clean-out and testing of wellhead components and wear bushings.

   
   

2. Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies, except that new editions may be used on issue and shall become mandatory upon the effective date specified by the publisher or 6 months from the date of the revision (where no effective date is specified).

API Specification 5B, Specification for Threading, Gauging and Thread Inspection of Casing, Tubing, and Line Pipe Thread

API Specification 7-1, Specification for Rotary Drill Stem Elements

API Specification 7-2, Specification for Threading and Gauging of Rotary Shouldered Thread Connections API Standard 6ACRA, Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment ASME 1, Boiler and Pressure Vessel Code, Section IX, Welding, Brazing, and Fusing Qualifications

ASTM A370 2, Standard Test Methods and Definitions for Mechanical Testing of Steel Products

ISO 148-1 (all parts) 3, Metallic materials—Charpy pendulum impact test

ISO 6892-1, Metallic materials—Tensile testing—Part 1: Method of test at room temperature

NACE MR0175/ISO 15156 4, Petroleum and natural gas industries—Materials for use in H2S-containing environments in oil and gas production

3 Terms, Definitions, Acronyms, Abbreviations, Symbols, and Units

3.1 Terms and Definitions

For the purposes of this document, the following definitions apply.

3.1.1

running tool retrieving tool

Tool used to run, retrieve, position or connect wellhead equipment remotely.

NOTE A tool can be used as both a running tool and retrieval tool.

1. American Society of Mechanical Engineers, Two Park Avenue, New York, NY, 10016-5990.

2. American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohoken, PA 19428-2959.

3. International Organization for Standardization, 1, ch. de la Voie-Creuse, Case postale 56, CH-1211 Geneva 20, Switzerland.

4. NACE International, 15835 Park Ten Place, Houston, Texas 77084.

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