Norsok m 702 Drill String Component

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NORSOK STANDARD

DRILL STRING COMPONENTS

M-702

Rev. 2, June 1999



This NORSOK standard is developed by NTS with broad industry participation. Please note that

whilst every effort has been made to ensure the accuracy of this standard, neither OLF nor TBL or

any of their members will assume liability for any use thereof. NTS is responsible for the

administration and publication of this standard.

Norwegian Technology Standards Institution

Oscarsgt. 20, Postbox 7072 Majorstua

N-0306 Oslo, NORWAY

Telephone: + 47 22 59 01 00 Fax: + 47 22 59 01 29

Email: [email protected] Website: http://www.nts.no/norsok

Copyrights reserved



Drill String Components M-702

Rev. 2, June 1999

NORSOK Standard Page 1 of 16

CONTENTS

FOREWORD

INTRODUCTION

1 SCOPE 32 NORMATIVE REFERENCES 3

3 DEFINITIONS 3

4 TECHNICAL DESCRIPTION 4

4.1 General 4

4.2 Internal coating requirements 4

4.3 Hardbanding 4

4.4 Material requirements 4

4.5 Testing requirements 5

4.6 Marking requirements 6

5 DRILL STRING COMPONENTS 6

5.1 General 6

5.2 Drill pipe w/tool joints 6

5.3 Heavy-weight drill pipe 7

5.4 Drill collars 7

5.5 Crossover subs (drill-stem subs) and stabilisers 7

5.6 Welded blade stabilisers 8

ANNEX A - TECHNICAL DATA SHEETS (NORMATIVE) 9

ANNEX B - TECHNICAL DATA SHEET (NORMATIVE) 12




Rev. 2, June 1999


FOREWORD

NORSOK (The competitive standing of the Norwegian offshore sector) is the industry initiative

to add value, reduce cost and lead-time and eliminate unnecessary activities in offshore field

developments and operations.

The NORSOK standards are developed by the Norwegian petroleum industry as a part of the

NORSOK initiative and supported by OLF (The Norwegian Oil Industry Association) and TBL

(Federation of Norwegian Engineering Industries). NORSOK standards are administered and

issued by NTS (Norwegian Technology Standards Institution).

The purpose of NORSOK standards is to contribute to meet the NORSOK goals, e.g. by replacing

individual oil company specifications and other industry guidelines and documents for use in

existing and future petroleum industry developments.

The NORSOK standards make extensive references to international standards. Where relevant,the contents of a NORSOK standard will be used to provide input to the international

standardisation process. Subject to implementation into international standards, the NORSOK

standard will be withdrawn.

Annexes A and B are normative.

INTRODUCTION

This standard number has been changed from M-CR-702 to M-702.

The revision work is performed of a working group consisting of representatives from users and

manufacturers. The main change to this standard is that the referred standard API RP 7G is

replaced with ISO 10407. Modifications are made to the material and testing requirements in

section 5.4 and 5.5 and to the annexes.




Rev. 2, June 1999


1 SCOPE

This standard describes the requirements for design, production and testing of drill pipe with tool

joints, heavy weight drill pipes, drill collars, stabilisers and crossover subs made of steel.

2 NORMATIVE REFERENCES

The following standards include provisions which, through reference in this text, contstitute

provisions of this NORSOK standard. Latest issue of the references shall be used unless

otherwise agreed. Other recognized standards may be used provided it can be shown that they

meet or exceed the requirements of the standards referenced below.

ISO 11961 Steel pipes for use as drill pipe. Specification. (Replaces API Spec

5D).ISO 10407 Petroleum and natural gas industries.

Drilling and production equipment - Drill stem design and operating

limits (Reproduces the content of API RP 7G, 14th edition, 1990)

API Spec. 7 Specification for Rotary Drill Stem Equipment.

ASTM E 45 Inclusion Control

EN 287 Approval testing of welders.

EN 288-3 Specification and qualification of welding procedures for metallic

materials.

EN 10204 Metallic products - Types of inspection documents.

3 DEFINITIONS

Shall Verbal form used to indicate requirements strictly to be followed in order to conform

to the standard and from which no deviation is permitted, unless accepted by all

involved parties

Should Verbal form used to indicate that among several possibilities one is recommended as

particularly suitable, without mentioning or excluding others, or that a certain course

of action is preferred but not recessarily required.

May Verbal form used to indicate a course of action permissible within limits of the

standard.






Rev. 2, June 1999


The material certificate shall be as required by EN 10204, Type 3.1B or equivalent and shall give

the chemical composition, including both the intentionally added and trace elements (N, P, S), the

mechanical properties, inclusion level, and the heat treatment condition of the supplied material.

4.5 Testing requirements

Mechanical testing shall be carried out for each heat, and each heat treatment batch. Test

specimens shall be cut from an integrated prolongation of the item, but may be taken from

separate test blocks provided they are connected to the item during the complete heat treatment

operation, they are of dimensions comparable with the items in question and have undergone the

same hot forming process. Sampling and mechanical testing shall be carried out after the final

heat treatment.

Test specimen shall be taken from the part of the component which is in the mid-section at the

time of heat treatment.

Inclusion level control shall be carried out at the frequency of one per heat. The sample shall be

taken near to the inside surface. Upon agreement between customer and supplier, source of steel

can be qualified on the base of statistical analysis.

Requirements:

• Charpy V-notch impact toughness for drill string components shall be documented to satisfy

the requirements of table 5.1.

• Elongation shall be 25 % higher than required by ISO 11961.

• Reduction of area min. 45 %.

• Yield/tensile ratio max. 0.92 for material with specified minimum yield strength 830 MPa

(120 ksi) and lower.

• Yield/tensile ratio max. 0.95 for material with specified minimum yield strength above 830MPa (120 ksi)

• Actual yield strength shall not exceed 1050 MPa for all components apart from drill pipe body

for material with chemistry according to clause 4.4.




Rev. 2, June 1999


Table 4.2 Impact energy requirements

Test

temperature

Specimen size Min. average energy of

each set of 3 specimens

Min. average of any

specimen of a set

( (mm x mm) (J) (J)

10 x10 70 60

10 x 7,5 56 49

Room-

temperature

10 x 5 47 40

10 x 10 41 30

10 x 7,5 33 24

- 20

10 x 5 27 20

Note:

If charpy impact energy values required for room temperature are met at test temperature

minus 20

4.6 Marking requirementsThe equipment shall be marked in accordance with ISO 10407 and shall be identifiable after the

components have been used. An optional brass tag can be added for further identification of

joints.

5 DRILL STRING COMPONENTS

5.1 General

Drill string components shall be delivered in accordance with API Spec. 7, ISO 11961 and the

additional requirements given in this standard.

5.2 Drill pipe w/tool joints

5.2.1 General

The data in accordance with ISO 11961 (1996) SR 15.1 and 15.2 shall be provided for drill pipe

body and tool joints.

Inspections in accordance with ISO 11961 (1996) Annex B - SR2 and Annex C shall be

performed for drill pipe body.

The threads shall be treated against gaulling and "broken in".




Rev. 2, June 1999


5.2.2 Welding of drill string components

The welding of drillpipe and tool joint shall be done by friction welding in accordance with a

qualified welding procedure.

Transverse weld tensile test shall as acceptance criterion have tensile strength at least equal to

minimum specified tensile strength for pipe material based on cross section of weld area versus

cross section of pipe.

Testing shall include hardness testing with the HRC (Rockwell C) method through the cross

section. The maximum hardness shall be 39 HRC.

Number of tensile tests and hardness test samples shall be minimum 2 for each delivery or

minimum once per 200 pipes, whichever is more. Both ends of the pipe shall be tested. The

testing should include the first pipe to be manufactured for each delivery.

Notch impact test (Charpy V-notch) shall as acceptance criteria have min. average 25 J and min.

single 20 J at minus 20

Sampling for transverse tensile testing and Charpy V-notch testing is shown in API Spec. 7

(1997), figures 7 and 8.

All welds shall be 100% inspected with MPI and ultrasonic testing. Testing should be carried out

in accordance with API Spec. 7.

5.3 Heavy-weight drill pipe

The specifications for heavyweight drill pipe (HWDP) shall be as described for drill pipe w/tool joints in clause 5.2 with the following amendments:

The pin and box shall have stress relief features in accordance with API Spec. 7. The stress relief

shall conform to the boreback design. The threads shall be given an anti-galling treatment. The

roots of the thread plus the surface of the pin stress relief groove (SRG) shall be cold worked and

marked according to API. Spec. 7 (1997), Sec. 8.1.5

5.4 Drill collars

5.4.1 General

The requirements for heavy weight drill pipe apply.

5.4.2 Nonmagnetic drill collars

If not specified otherwise, stainless steel according to API Spec 7 (1997), Sec. 8.3 shall be used.

Connections shall be given an anti-galling treatment

5.5 Crossover subs (drill-stem subs) and stabilisers

The requirements for Crossover subs shall be as for Drill collars, ref. section 5.4.




Rev. 2, June 1999


5.6 Welded blade stabilisers

Any fabrication welding shall be qualified in accordance with EN 288-3 or equivalent. The

welders/welding operators shall be certified according to EN 287 or equivalent specification. All

welds shall be 100 % MPI inspected in accordance with API Spec 7.




Rev. 2, June 1999


ANNEX A - TECHNICAL DATA SHEETS (NORMATIVE)

Information to be supplied by purchaser with request for quotation.

DRILL PIPE W/TOOL JOINTS

Number of joints:

Range:

Nominal weight:

OD of the pipe body:

Grade:

Connection type:

OD of tool joint:

ID of tool joint, pin:

Pin Tong space length: STD: +1": +2":Box Tong space length: STD: +1": +2":

Type of upset:

Type of elevator shoulder; pin:

Type of elevator shoulder; box:

Hardbanding of tool joint;

box/type:

Hardbanding of tool joint;

pin/type:

Internal coating; Yes/No:

Type of thread storage/transport

compound:

Type of thread protector:

Brass Tag, Yes/No:

Optional requirements:

Special Drift Size: Through Upset: Full Length:

Third Party Inspection :




Rev. 2, June 1999


Information to be supplied by Vendor with quote:

DRILL PIPE W/TOOL JOINTS

Description: 1. Class New Premium Class

Number of joints:

Range:

Pipe body:

OD of pipe body:

ID of the pipe body:

Wall thickness; nominal/minimum:

Type of upset:

Nominal weight:

Grade:

Drift diameter/area to be drifted:Collapse resistance; minimum:

Internal yield pressure; minimum:

Tensile yield; minimum:

Torsional yield; minimum:

Adjusted weight:

Tool joint

OD of tool joint:

ID of tool joint; pin/box:

Tong space length; pin:Tong space length; box:

Type of elevator shoulder; pin:

Type of elevator shoulder; box:

Bevel diameter:

Connection type:



Make-up torque:

Hardbanding of tool joint; box/pin:

Internal coating:External rust protection:

Type of thread storage/transport

compound:

Type of thread protector:

Effective length of drillpipe from

shoulder to shoulder, tool joint:




Rev. 2, June 1999


NOTE: When filling in the data sheets, Vendor shall note the Premium Class values (operating

criteria) behind the 1. Class values.




Rev. 2, June 1999


ANNEX B - TECHNICAL DATA SHEET (NORMATIVE)

Information to be supplied by Purchaser with request for quotation.

HEAVY WALL DRILL PIPE

Type; with or without weld:

Type; spiral or conventional:

Number of joints:

Range:

OD of the pipe body:

ID of the pipe body:

Nominal weight:

Grade:

Connection Type:Drift diameter :

Internal Coating; Yes/No:

Hardfacing of box/type:

Hardfacing of pin/type:

Hardfacing of centre upset, type:

Thread protectors; Yes/No:




Rev. 2, June 1999


Information to be supplied by Vendor with quote.

HEAVY WALL DRILL PIPE

Description: 1. Class Premium Class

Number of joints:

Internal yield pressure;

minimum:

Collapse resistance; minimum:

Hardfacing of tool joint;

type/length:

ID of tool joint:

OD of tool joint:

Bevel diameter:

Length of tong space, P/B:

Type of elevator shoulder, P/B:Thread type:

Connection type:

Type of thread protectors:

Stress-relief groove, pin type:

Bore back, box type:

Bending strength ratio:

Thread anti galling treatment,

type:



Make-up torque:

Hardfacing of centre upset/type:

OD of centre upset:

Length of centre upset:

External rust protection:

Internal plastic coating:

Closed end displacement:

Open end displacement:

Capacity:

Adjusted weight:

Length of HWDP from sealingshoulder to sealing shoulder,

tool joint:




Rev. 2, June 1999


Information to be supplied by Purchaser with request for quotation

DRILL COLLAR

Number of joints:

OD of the collar:

ID of the collar:

Connection type:

API Drift diameter:

Spiral grooving:

Spiral direction:

Right hand

Nominal weight:

Hardbanding box/type:

Hardbanding pin/type:





Rev. 2, June 1999



DRILL COLLAR

Description: 1. Class Premium Class

Yield strength; minimum:

Tensile strength; minimum:

Tong space box:

Tong space pin:

OD pin end:

OD box end:

Elevator recess:

Slip recess:

Hardbanding box/type:

Hardbanding pin/type:

Bevel diameter:Thread type:

Connection type:

Stress-relief groove, pin:

Bore back, box:

Bending strength ratio:

Nominal make up torque:


Type thread compound:


Closed end displacement:

Open end displacement:

Effective length of drillcollar,

sealing shoulder to sealing

shoulder:




Rev. 2, June 1999


Information to be supplied by Purchaser with request for quotation.

ROTARY SUB/X-OVER SUB

Type rotary sub:

OD of sub:

OD of reduced section:

ID of sub:

Drift diameter:

Length of sub, sealing

shoulder to sealing shoulder:

Tong space of large OD:

Tong space of reduced OD:

Connection type:





Weight:

Upper connection type,

pin/box:

Lower connection type,

box/pin:

Stress relief groove, pin/pin:

Bore back, box/box:

Bevel diameter, pin/box:

Bending strength ratio, p/b:

Bending strength ratio, b/p:

Make up torque, p/b:

Make up torque, b/p:


Type thread compound:


Float bore, size and type:

Norsok m 702 Drill String Component

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