• upper and lower kelly valves,
• square and hexagon kellys,
• drill-setem subs,
• drill collars,
• drillng and coring bits

Rotary shouldered connections and gauging for drill stem elements are covered in API Spec 7-2.

This edition of API Spec 7-1 is the modified national adoption of ISO 10424-1, Petroleum and natural gas industries-Rotary drilling equipment-Part 1: Rotary Drill stem elements. This specification contains the API Monogram Annex as part of the U.S. national adoption.

Contents

API Forward

Foreword

Introduction

1 Scope

2 Conformance

2.1 Units of measurement

2.2 Tables and figures

3 Normative references

4 Terms, definitions, symbols and abbreviated terms

4.1 Terms and definitions

4.2 Symbols and abbreviated terms

5 Upper and lower kelly valves

5.1 General

5.2 Design criteria

5.3 Connections

5.4 Hydrostatic testing

5.5 Documentation and retention of records

5.6 Marking

5.7 Supplementary requirements

6 Square and hexagonal kellys

6.1 Size, type and dimensions

6.2 Dimensional gauging

6.3 Connections

6.4 Square forged kellys

6.5 Mechanical properties

6.6 Non-destructive examination

6.7 Marking

7 Drill-stem subs

7.1 Class and type

7.2 Dimensions for types A and B

7.3 Dimensions for type C (swivel subs)

7.4 Type D (lift sub) dimensions

7.5 Mechanical properties

7.6 Non-destructive examination

7.7 Connection stress-relief features

7.8 Cold working of thread roots

7.9 Gall-resistant treatment of threads and sealing shoulders

7.10 Marking

8 Drill collars

8.1 General

8.2 Standard steel drill collars

8.3 Non-magnetic drill collars

9 Drilling and coring bits

9.1 Roller bits and blade drag bits

9.2 Diamond drilling bits, diamond core bits and polycrystalline diamond compact (PDC) bits .....46

10 Non-destructive examination of bars and tubes

10.1 General

10.2 Certification and qualification of NDE personnel

10.3 Surface defects

10.4 Internal defects

Annex A (informative) Tables in US Customary Units

Annex B (informative) API Monogram

Bibliography