API 6A

A CameronIntroduction to AmericanPetroleum InstituteSpecificationsAPI 6A (ISO 10423):

Specification for Wellhead

and Christmas Tree Equipment

API Q1: Specification for

Quality Programs, the API

Monogram Program and

ISO-9000 Accreditations.

Cameron Locations

POLICY

The Cameron Division of Cooper Cameron Corporation supports the

development and use of international product standards such as those

published by API and ISO. These standards provide a common basis for

product characteristics and performance attributes and act to capture

the successful industry history associated with these products. Products

marketed, designed, manufactured and used in compliance with

recognized industry standards add significant value to our industry.

Cameron endorses the API monogram program and API Quality Program

Specification Q1. API Q1 applies the recognized benefits of the ISO 9001

Quality Program elements tailored specifically to the oil and gas industry.

The API monogram program joins the assessment of Quality programs

with the demonstrated ability to comply with international product

standards such as API Specification 6A (ISO 10423) for Wellhead and

Christmas Tree Equipment.

© CAMERON, P.O, Box 1212, Houston TX, 77251-1212, Tel: 713.939.2211 Fax: 713.939.2620, http://www.camerondiv.com

Specification for Wellhead andChristmas Tree Equipment

API SPECIFICATION 6A

API Specification 6A (ISO 10423) is the recognized industry standard for

Wellhead and Christmas Tree Equipment which was formulated to

provide for the availability of safe, dimensionally and functionally

interchangeable Wellhead and Christmas Tree Equipment. This

specification includes detailed requirements for the manufacture of

tubular suspension equipment, valves and fittings used at the location

of oil and gas wells to contain and control pressure and fluid flows.

Specification 6A also serves as the reference source for the design of

flanged end and outlet connections for use at 2,000 to 20,000 psi

maximum rated working pressures and a family of gate valves for use

over these same pressure ranges. API Specification 6A is also specified

as the base standard for

manufacture of subsea

equipment in accordance with

API Specification 17D.

The current edition of API 6A,

includes requirements for

Surface Safety Valves (SSV)

and Underwater Safety Valves

(USV).



EQUIPMENT

WellheadEquipment

Casing HeadHousing

Casing HeadSpools

Tubing HeadSpools

CrossoverSpools

MultistageHead Housing

& Spools

CrossoverConnectors

Tubing HeadAdapters

Top Connectors

Tees andCrosses

Fluid SamplingDevices

Adapter andSpacer Spools

Other EndConnectors(Proprietary)

MandrelHangers

Slip Hangers

SingleCompletion

Valves

MultipleCompletion

Valves

Actuated Valves

Valves Preparedfor Actuators

Check Valves

Chokes

SSV/USV &Actuators for

Offshore Services

Weld NeckConnectors

BlindConnectors

ThreadedConnectors

Adapter andSpacer

Connectors

Actuators

Ring Gaskets

Bull PlugsRunning Tools

Valve Removal PlugsWear Bushings

Connectors andFittings

Casing & TubingHangers

Valves andChokes

LooseConnectors

OtherEquipment

API Specification 6A (ISO 10423) covers Wellhead and Christmas TreeEquipment as follows:


PRODUCT SPECIFICATION LEVELS (PSL’s)

API Specification 6A (ISO 10423) provides definition of standard service

conditions and introduces the concept of product specification levels

(PSL’s) which will be referred to throughout the document. The PSL’s

define different levels of effort, or levels of technical requirements

which may be specified for a product. Generally, these levels represent

industry practice for various service conditions. The decision tree shown

below is designed to assist the purchaser in selecting the proper

specification levels (PSL’s) for primary parts of Wellhead and Christmas

Tree Equipment.

START HERE

YES YES

YES

NONO

NO

YES YES YES

NO NO

NO

NO

YES

YES

NO

PSL-3G

PSL-3G

PSL-3

PSL-3G

PSL-3

PSL-2

PSL-3

PSL-2

PSL-2

PSL-3

PSL-2

PSL-1

PSL-1

RATED WORKINGPRESSURE ≥103.5MPa (15,000 PSI)

HIGH H2S

CONCENTRATION ?

GAS WELL

NACE ?HIGH H2S

CONCENTRATION ?

RATED WORKINGPRESSURE

GAS WELL


GAS WELL



GAS WELL

> 34.5 MPa (5,000 PSI )

≤ 34.5 MPa (5,000 PSI )

> 34.5 MPa (5,000 PSI)

≤34.5 MPa (5,000 PSI)

> 34.5 MPa (5,000 PSI)

≤ 34.5 MPa (5,000 PSI)

≤ 34.5 MPa (5,000 PSI)

> 34.5 MPa (5,000 PSI)


PRESSURE RATINGS

TEMPERATURE CLASSES

Six pressure ratings from 2,000 to 20,000 psi represent the maximumworking pressure of the equipment.

API Pressure Rating in PSI

2,000 13.8

3,000 20.7

5,000 34.5

10,000 69.0

15,000 103.5

20,000 138.0

API Pressure Rating in MPa

Eight Temperature Classes, each of which represent a range oftemperatures from the minimum ambient air temperature to themaximum temperature of the well fluid passing through or contained by the equipment.

API TEMP. CLASSIFICATION

OPERATING RANGE(DEG. F)

(MIN.) (MAX.)

OPERATING RANGE(DEG. C)

(MIN.) (MAX.)

K -75 TO 180

-50 TO 180

-20 TO 180

ROOM TEMPERATURE

0 TO 150

0 TO 180

0 TO 250

35 TO 250

-60 TO 82

-46 TO 82

-29 TO 82

ROOM TEMPERATURE

-18 TO 66

-18 TO 82

-18 TO 121

2 TO 121

L

P

R

S

T

U

V

Note: These temperature classes can be used in combination with one another to achieve a wider rating. Forinstance, a common rating for 6A gate valves is P+U (-20 to 250° F).

Corrosion Resistant Alloyb


MATERIAL CLASSES

There are seven Material Classes which specify minimum materialrequirements for general or sour service shown below. API 6A (ISO 10423) equipment must be designed, tested and marked assatisfactory for one of these Material Classes.

Minimum Material Requirements

API Material ClassBody, Bonnet, End & Outlet

ConnectionsPressure Controlling Parts,Stems, & Mandrel Hangers

AA - General Service Carbon or low alloy steel

Carbon or low alloy steel

Stainless Steel

Carbon or low alloy steelb


Stainless steelb

Corrosion Resistant Alloyb

Carbon or low alloy steel

Stainless steel

Stainless Steel


Stainless steelb

Stainless steelb

BB - General Service

CC - General Service

DD - Sour Servicea

EE - Sour Servicea

FF - Sour Servicea

HH - Sour Servicea

aAs defined by National Association of Corrosion Engineers (NACE) Standard MR0175bIn compliance with NACE Standard MR0175Only the most stringent classification is marked.

ANNEX F TESTING

Performance verification testing is often performed on prototypes orproduction models of API Specification 6A (ISO 10423) equipment toensure that the performance requirements (PR’s) specified for pressure,temperature, load, mechanical cycles, and standard test fluids are met in the design of the product.

Performance Verification Testing may include:Pressure/Temperature CyclesLoad/Mechanical CyclesNonmetallic Seal Thermochemical Testing

Scalable Performance Verification levels (i.e. PR1, PR2) are applicable tomany API 6A products. Although Annex F Testing is not a requirement inAPI 6A, Cameron is proud to offer a wide variety of products proven tomeet, and often exceed the performance verification requirements of API 6A Annex F.


WELDING

Quality control requirements for welding generally increase as the PSLlevel increases from 1 through 3 with each level building on the levelbelow it. No welding is permitted on PSL-4 equipment except for corrosion resistant alloy overlays. The following table applies topressure containing fabrication and repair weldments for bodies,bonnets, and end and outlet connections:

Weld ProcedureQualification

WelderPerformanceQualification

WeldingConsumables,InstrumentCalibration

Visual Exam ofWeld

Weld Surface NDE: PT/MT

Weld VolumetricNDE: UT/RT

Weld HardnessTesting

ASME SECT. IXWith

Hardness Survey

ASME SECT. IX

DocumentedControlsRequired

_

_

_

_

Same as PSL-1 plusBase MetalGrouping

Same as PSL-1 plusHole Qualification

Same as PSL-1

Required

Required

Required For AllFabrication Welds and Repair Welds >25% of Wall

Required For AllFabrication Welds and Repair Welds >20% of Wall

_

Same as PSL-2 plusChemical Analysisand PWHT Controls

Same as PSL-2

Same as PSL-1

Required

Required

Required

No Welding AllowedExcept for

Corrosion Resistant Alloy Overlays

No Welding AllowedExcept for

Corrosion Resistant Alloy Overlays

PSL-1 PSL-2 PSL-3 PSL-4


QUALITY CONTROL

Specification 6A (ISO 10423) describes pertinent information oninspections, tests, examinations, and required documentation. Since theselection of Product Specification Level (PSL) is ultimately a purchaser’sdecision, quality control information is provided to make it easy for usersto select the PSL level consistent with their risk management needs.

Quality Control Requirements for Equipment

Requirements

Drift Test Yes Yes Yes Yes

Hydrostatic Test Yes Yes Yes, Extended Yes, Extended

Gas Test _ _ – Yes

AssemblyTraceability

_ _ Yes Yes

Serialization _ Yes Yes Yes


Yes

Yes, Extended

Yes

Yes

Yes

PSL-3G


QUALITY CONTROL

Quality Control Requirements for Bodies, Bonnets, and End andOutlet Connections

Requirements

Tensile Testing Yes Yes Yes Yes

Impact Testing K, L K, L, P Yes Yes

Hardness Testing Sampling Single Multiple Multiple

DimensionalVerification

Sampling Sampling Yes Yes

Traceability _ Yes Yes Yes


Chemical Analysis _ Yes Yes Yes

Visual Examination Yes Yes _ _

Surface NDE _ Yes Yes Yes

Weld NDE _ Yes Yes Yes

Serialization _ _ Yes Yes

Volumetric NDE _ _ Yes Yes

Definitions:

End and Outlet Connections - Integral threads, male or female; flanges, studded or through-bolted; or anyother means used to join together equipment that contains or controls pressure.

Body - Any portion of API Spec 6A equipment between end connections, with or without internal parts,which contains well-bore pressure.

Bonnet - A pressure-containing closure for a body, other than an API end or outlet connection.

MARKINGS

Section 8 of Specification 6A and the chart below describemarking instructions for equipment. The marking requirementsinclude the following:


CC-OKC API 13–5/8" 5000 PSI S AA 1 PR2 6-01

Manufacturer‘sMark

Monogram

NominalSize

Rated WorkingPressure

TemperatureClass

MaterialClass

ProductSpecification

Level

PerformanceRequirement

Level

Date of FinalAcceptance

HOW TO ORDER

The following data sheet is included as a worksheet for assemblinginformation needed to place an order:

Well name(s) and location(s): __________________________________________________________________

Maximum operating pressure: __________________________________________________________________

Anticipated wellhead shut-in pressure: __________________________________________________________

Temperature ranges anticipated: ________________________________________________________________

Minimum ambient temperature: ________________________________________________________________

Maximum flowing fluid temperature at wellhead: ________________________________________________

Anticipated composition of produced fluids: CO2 __________ ppm ___________ Chlorides ________ppm

___________________________H2S ______________ppm ______________ Other ______________

Anticipated completion or future workover or recovery operations which would affect pressure,

temperature, or fluid content __________________________________________________________________

New values:_________________________________________________________________________________

Are there any government regulations that will apply or must be met by this equipment?_______________

If so, which one(s)? __________________________________________________________________________

Water or brine pH:

Does NACE MR0175 apply?

Will scale, paraffin, corrosion, or other types of inhibitors be used? __________________________________

Inhibitor type: _______________ Inhibitor carrier: _______________ Batch or continuous inhibition? ______

Will acidizing be performed? ________________________________ Type of acid: ______________________

Anticipated production rates: ______________________ M3/D oil/condensate

______________________ M3/D gas

______________________ M3/D S&W

Will erosion be concern? ____________________ Cause: __________________________________________

External coating? Yes, Type _________________________ No _________________

Internal coating? Yes, Type__________________________No _________________

Delivery requirements: ________________________________________________________________________

____________________________________________________________________________________________

Special shipping, packing and storage instructions: ________________________________________________

Casing Program

Top Joint String

Size (OD) Wt., Kg/m (lb/ft) Grade Connection Total String Bit Size

Hanging Wt. in mm

in DaN (lbs) (in)

Conductor ________ ________ ________ ________ ________ ________

Surface Csg. ________ ________ ________ ________ ________ ________

Protective Csg ________ ________ ________ ________ ________ ________

Production Csg. ________ ________ ________ ________ ________ ________

Tubing ________ ________ ________ ________ ________ ________

Type of Completion: single or multiple: ________________

Technical contact in buyer’s organization: ________________________________________________________

Phone: ________________________________________________________

For more information, contact your local Cameron representative.Cameron, P.O. Box 1212 • Houston, TX 77251-1212 • Tel: (713)939-2211 • FAX: (713) 939-2620

http://www.camerondiv.com

EXHIBIT A1 – GENERAL WELLHEAD EQUIPMENT DATA SHEET

API Q1: Specification for Quality Programs, the APIMonogram Program and ISO-9000 Accreditations.

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API SPECIFICATION Q1

OVERVIEWAPI Q1 is intended to be used in conjunction with international oil and gasproduct standards by internationally licensed manufacturers. Used in thismanner, API Q1 delivers significant value to the industry by providing acohesive link between the accreditation of a manufacturer’s quality systemwith their ability to provide products meeting industry and customerrequirements.

API Specification Q1 differs from generic quality systems, (e.g., ISO 9000Series), by its role in the voluntary licensing of manufacturers to provide oiland gas industry products in accordance with API specifications. API licensesare only issued after an on-site survey has confirmed that the licensee adheresto the requirements of both the quality system standard API Q1 and therequirements of an international oil and gas product specification recognizedby the oil and gas industry and API. In contrast, generic quality systemrequirements are normally intended to be applied to any industry or productthrough contractual agreements with or without industry standards orspecifications.

Typical Quality Program Elements (API Q1)1 SCOPE 2 REFERENCES3 DEFINITIONS4 QUALITY SYSTEM REQUIREMENTS4.1 MANAGEMENT RESPONSIBILITY4.2 QUALITY SYSTEM4.3 ORDER REVIEW4.4 DESIGN CONTROL4.5 DOCUMENT AND DATA CONTROL4.6 PURCHASING4.7 PURCHASER-SUPPLIED PRODUCT4.8 MATERIAL/PRODUCT

IDENTIFICATION AND TRACEABILITY4.9 PROCESS CONTROL4.10 INSPECTION AND TESTING

Typical Quality Program Elements (ISO 9001 – 2000)1 SCOPE 2 NORMAL REFERENCES3 TERMS AND DEFINITIONS4 QUALITY SYSTEM REQUIREMENTS5 MANAGEMENT RESPONSIBILITY6 RESOURCE MANAGEMENT7 PRODUCT REALIZATION8 MEASUREMENT, ANALYSIS AND IMPROVEMENT

4.11 INSPECTION, MEASURING, AND TEST EQUIPMENT

4.12 INSPECTION AND TEST STATUS4.13 CONTROL OF NONCONFORMING

PRODUCT4.14 CORRECTIVE ACTION4.15 HANDLING, CLEANING, STORAGE,

PACKAGING, AND DELIVERY4.16 QUALITY RECORDS4.17 INTERNAL QUALITY AUDITS4.18 TRAINING, INDOCTRINATION,

AND QUALIFICATION4.19 SERVICING4.20 STATISTICAL TECHNIQUES


Cameron is proud to maintain API and ISO accreditations at our manufac-turing and repair facilities. In fact, Cameron holds the largest number of APIlicenses in the industry. These accreditations, however, only make up a partof Cameron’s commitment to quality. We invite you to contact your localCameron representative and review our commitment to quality in detail.

API and ISO ACCREDITATIONS

API 6A API 6D API 16A API 16CAPI 16R

API 17DPlant Wellhead & Ball Drill Through Drilling

API 16D MarineSubsea ISO

Locations Xmas Trees Valves Equipment ChokesControls Drilling Riser

EquipmentCouplings

Western Hemisphere

Brookshire 0126 ISO 9001

Edmonton (CC) 0418.5 0086.3 ISO 9001

Edmonton (CCV) 0244.5

Houston–Actuators 0506 0014 0022 ISO 9001

Houston–Controls 0012 0015 ISO 9001

Liberty 0418 0244 0086 0001 0028 ISO 9001

Little Rock 0073 ISO 9001

Livingston, TX 0276

Maracaibo (CC) 0042.27 0086.9 ISO 9002

Oklahoma City (CCV) 0418.2 0244.2 ISO 9001

Oklahoma City (CC) 0418.13 0244.10 ISO 9001

Patterson 0418.3 0244.3 0086.1 0006.1 0007.1 ISO 9001

Sao Paulo ISO 9001

Veracruz 0148.8 0121.8 ISO 9001

Ville Platte 0244.4 ISO 9001

Zarate 0418.7 0244.7 0086.5 ISO 9001

Eastern Hemisphere

Aberdeen ISO 9001

Beziers 00418.9 00244.8 0086.6 0006 0007.4 ISO 9001

Celle 00418.19 0086.8 0006 0007.6 ISO 9001

Hoogezand ISO 9002

Leeds 0418.10 0086.7 0007.5 ISO 9001

Livingston, Scotland 0291 ISO 9001

Longford 00418.20 0007.7 ISO 9001

Randaberg, Norway 0418.22 ISO 9001

Asia Pacific / Middle East

Batam 0223 0000 ISO 9002

Darul, Malaysia 0418.12 0244.9 0007.8 ISO 9002

Deer Park, VictoriaAustralia

0042.18 0014.9 0001.6 ISO 9001

Oman 0516 ISO 9002

Singapore 0418.6 0244.6 0086.4 0007.3 ISO 9001

API 6A

Documents

Transcript of API 6A