Lock Mandrels and Landing Nipples

API SPECIFICATION 14L THIRD EDITION, JUNE 2020

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Copyright © 2020 American Petroleum Institute

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Foreword

This specification is under the jurisdiction of the API SC19, Subcommittee on Completion Equipment.

Standards referenced herein may be replaced by other international or national standards that can be shown to meet or exceed the requirements of the referenced standard. Manufacturers electing to use another standard in lieu of a referenced standard are responsible for documenting equivalency.

The verbal forms used to express the provisions in this specification are as follows:

• the term “shall” denotes a minimum requirement in order to conform to the standard;

  
  

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

  
  

• the term “may” is used to express permission or a provision that is optional;

  
  

• 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 and Definitions 3

4. Abbreviated Terms 6

5. Functional Specification 6

   1. General 6

   2. Functional Characteristics of Lock Mandrels and Landing Nipples 7

   3. Well Parameters 7

   4. Operational Parameters 8

   5. Environmental Compatibility 8

   6. Compatibility with the Related Well Equipment 9

   7. Design Validation Grades 9

6. Technical Specification 10

   1. General 10

   2. Technical Characteristics of Lock Mandrels and Landing Nipples 10

   3. Design Criteria 10

   4. Design Verification 13

   5. Design Validation 14

   6. Design Changes 21

   7. Scaling Limits 21

   8. Design Documentation 22

7. Supplier/Manufacturer Requirements 22

   1. Documentation and Data Control 22

   2. User/Purchaser Documentation 22

   3. Product Identification 24

   4. Quality Control 24

   5. Assembly Verification 32

8. Repair 32

Annex A (informative) API Monogram Program Use of the API Monogram by Licensees 33

Annex B (informative) Example of Landing Nipple Validation Test Dimensional Check Sheet 37

Annex C (informative) Requirements for Equipment in HPHT Environments 38

Bibliography 49

Figures

1 Landing Nipple and Lock Mandrel Schematic 7

B.1 Example of Landing Nipple Validation Test Dimensional Check Sheet 37

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Contents

Page

C.1 HPHT Design Flowchart 43

Tables

1. Validation Grades for Lock Mandrels 10

2. Validation Grades for Landing Nipples 10

3. Design Validation Grade Hierarchy 14

4. Landing Nipple V2 Validation Test 15

5. Lock Mandrel V2 Validation Test 16

6. Lock Mandrel V1 Validation Test 17

7. Lock Mandrel V0 Validation Test 19

8. Elastomer Material Specification Requirements 25

9. Thermoplastic Material Specification Requirements 25

10. Maximum Severity Level for Defects in Castings 30

1. Lock Mandrel Design Validation Hierarchy 38

2. Landing Nipple Design Validation Hierarchy 38

3. Lock Mandrel V1-H Validation Test 45

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Introduction

This specification has been developed by users/purchasers and suppliers/manufacturers of lock mandrels and landing nipples intended for use in the petroleum and natural gas industry worldwide. This specification is intended to give requirements and information to both parties in the selection, manufacture, testing, and use of lock mandrels and landing nipples. Furthermore, this specification addresses the minimum requirements with which the supplier/ manufacturer is to comply to claim conformity to this specification.

This specification has been structured to allow for grades of increased requirements in design validation. These variations allow the user/purchaser to select the grade required for a specific application.

This edition has been revised to include one set of quality requirements. There are six design validation grades for lock mandrels (V3, V2, V1, V0, V1-H, and V0-H) and three design validation grades for landing nipples (V3, V2, and V2-H) that provide the user/purchaser the choice of requirements to meet specific preference or application. Design verification requirements were expanded. The complexity and severity of the validation testing increases as the grade number decreases.

Users of this specification should be aware that requirements above those outlined in this specification may be needed for individual applications. This specification is not intended to inhibit a supplier/manufacturer from offering, or the user/purchaser from accepting, alternative equipment or engineering solutions. This may be particularly applicable where there is innovative or developing technology. Where an alternative is offered, the supplier/manufacturer should identify any variations from this specification and provide details.

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Lock Mandrels and Landing Nipples

1. Scope

   
   

   This specification provides the requirements for lock mandrels and landing nipples within the production/injection conduit for the installation of flow control or other equipment used in the petroleum and natural gas industries. It includes the interface connections to the flow control device or other equipment, but does not cover flow control devices, the connections to the well conduit, alternate technologies, or other requirements covered by other existing API or ISO specifications.

   
   

2. Normative References

The following referenced documents are indispensable for the application of this document. The way in which these referenced documents are cited determines the extent (in whole or part) to which they apply. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

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

API Technical Report 5C3, Calculating Performance Properties of Pipe Used as Casing or Tubing, Seventh Edition

API Specification 6A, Specification for Wellhead and Tree Equipment

API Specification 14A, Specification for Subsurface Safety Valves

API Specification 20A, Carbon Steel, Alloy Steel, Stainless Steel, and Nickel Base Alloy Castings for Use in the Petroleum and Natural Gas Industry

API 579-1/ASME FFS-1, Fitness-For-Service

API Specification Q1, Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry

2

ANSI/NACE MR01751 /ISO 15156 (all parts), Petroleum and natural gas industries—Materials for use in H S-

containing environments in oil and gas production

ASME2 Boiler and Pressure Vessel Code, Section V, Non-destructive examination

ASME Boiler and Pressure Vessel Code, Section Vlll, Division 1, Rules for construction of pressure vessels

ASME Boiler and Pressure Vessel Code, Section VIII, Division 2, Alternative Rules ASME Boiler and Pressure Vessel Code, Section lX, Welding and Brazing Qualifications ASNT SNT-TC-1A,3 Personnel Qualification and Certification in Nondestructive Testing

1 NACE International (formerly the National Association of Corrosion Engineers), 1440 South Creek Drive, Houston, Texas

77084-4906, www.nace.org.

2 American Society of Mechanical Engineers, Two Park Avenue, New York, New York 10016-5990, www.asme.org.

3 American Society for Nondestructive Testing, PO Box 28518, 1711 Arlingate Lane, Columbus, Ohio 43228-0518, USA.

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