BOP Shear Ram Performance Test Protocol

API TECHNICAL REPORT 16TR1 FIRST EDITION, JULY 2018

ERRATA 1, OCTOBER 2018

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Copyright © 2018 American Petroleum Institute

Date of Issue: October 2018

Affected Publication: API Technical Report 16TR1, BOP Shear Ram Performance Test Protocol, First Edition, July 2018

Errata 1

Section 8: Equation (2) shall be displayed as follows:

Figure 4 shall be replaced with the following:

Figure 5 shall be replaced with the following:

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iii

Contents

Page

1. Scope 1

2. Normative References 1

3. Definitions and Nomenclature 1

   1. Definitions 1

   2. Abbreviations 2

4. Test Equipment 3

   1. General 3

   2. Blowout Preventer (BOP) 3

   3. BOP Operator 3

   4. Shear Ram 3

   5. Instruments 4

5. Test Samples 4

   1. Pipe Description 4

   2. Pipe Properties 4

6. Shear Test Procedure 5

   1. Pipe Test Sample Preparation 5

   2. Test Procedure Summary 6

   3. Procedure-Test 1 9

   4. Procedure-Test 2 11

   5. Procedure-Test 3 13

7. Post Shear Measurements 13

8. Calculations 13

9. Documentation 14

Annex A (informative) Example Data Sheet 16

Annex B (normative) Shear Results Summary Table 21

Bibliography 22

Figures

1. Typical Initial Dimension Locations 5

2. Test Sample Length Requirement 6

3. Test 1 Outline 7

4. Test 2 Outline 8

5. Test 3 Outline 9

6. Shear Pipe Setup 10

v

BOP Shear Ram Performance Test Protocol

1. Scope

   
   

   This document outlines the standardized test protocol, including data and reporting requirements, for performing sealing and nonsealing blowout preventer (BOP) shear ram performance tests. This protocol determines the parameters that can support field system performance and confidence in successful shearing and sealing.

   
   

   This document is not intended to be used for qualifying BOP shear rams or as a factory acceptance test (FAT) procedure.

   
   

   Qualification and FAT of BOP shear rams is per API 16A.

   
   

2. Normative References

   The following referenced documents are essential when considering the examples outlined in this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

   
   

   API Spec 16A, Specification for Drill-through Equipment, 2017

   
   

   API Spec 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment

   
   

   ASTM A3701, Standard Test Methods and Definitions for Mechanical Testing of Steel Products

   
   

   ASTM E165, Standard Practice for Liquid Penetrant Examination for General Industry

   
   

   ASTM E709, Standard Guide for Magnetic Particle Testing

   
   

   ASTM A388, Standard Practice for Ultrasonic Examination of Steel Forgings

   
   

3. Definitions and Nomenclature

3.1 Definitions

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

3.1.1

blind shear ram

Closing and sealing component in a ram blowout preventer that first shears the tubular in the wellbore and then seals off the bore or acts as a blind ram if there is no tubular in the wellbore.

3.1.2

closing ratio

Area of the operator piston exposed to the closing operating pressure, divided by the cross-sectional area of the piston shaft exposed to the wellbore pressure.

3.1.3

non-sealing shear ram

Closing component in a ram blowout preventer that is capable of shearing or cutting certain tubulars, but does not seal.

1 ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, Pennsylvania, 19428-2959, www.astm.org.