ISO 16070:2005

INTERNATIONAL ISO
STANDARD 16070
Second edition
2005-12-15


Petroleum and natural gas industries —
Downhole equipment — Lock mandrels
and landing nipples
Industries du pétrole et du gaz naturel — Équipement de fond de
trou — Mandrins à clé d'ancrage et sièges d'ancrage





Reference number
ISO 16070:2005(E)
©
ISO 2005

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ISO 16070:2005(E)
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ISO 16070:2005(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 3
4 Abbreviated terms . 4
5 Functional specification. 5
5.1 General. 5
5.2 Functional characteristics of lock mandrels and landing nipples . 5
5.3 Well parameters . 5
5.4 Operational parameters . 5
5.5 Environmental compatibility. 6
5.6 Compatibility with the related well equipment . 6
5.7 Quality documentation. 6
5.8 Design validation . 6
6 Technical specification . 7
6.1 General. 7
6.2 Technical characteristics of lock mandrels and landing nipples . 7
6.3 Design criteria . 7
6.4 Design verification. 9
6.5 Design validation . 10
6.6 Design changes . 12
6.7 Functional test parameters. 12
7 Supplier/manufacturer requirements. 12
7.1 Documentation and data control. 12
7.2 User/purchaser documentation. 13
7.3 Product identification. 14
7.4 Quality control. 14
7.5 Functional testing. 21
8 Repair. 22
Annex A (informative) Example of landing nipple validation test dimensional check sheet . 23
Bibliography . 24

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ISO 16070:2005(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16070 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries, Subcommittee SC 4, Drilling and production
equipment.
This second edition cancels and replaces the first edition (ISO 16070:2001), which has been technically
revised.
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ISO 16070:2005(E)
Introduction
This International Standard 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
International Standard 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 International Standard
addresses the minimum requirements with which the supplier/manufacturer is to comply so as to claim
conformity to this International Standard.
This International Standard has been structured to allow for grades of increased requirements in quality
documentation and design validation. These variations allow the user/purchaser to select the grade required
for a specific application.
There are two quality documentation grades which provide the user/purchaser the choice of requirements to
meet specific preference or application. Quality documentation grade Q2 is the minimum grade of
documentation offered by this International Standard. Grade Q1 provides additional material documentation.
There are three design validation grades which provide the user/purchaser the choice of requirements to meet
specific preference or application. Design validation grade V3 is the minimum grade and represents
equipment where the validation method has been defined by the supplier/manufacturer. The complexity and
severity of the validation testing increases as the grade number decreases.
Users of this International Standard should be aware that requirements above those outlined in this
International Standard may be needed for individual applications. This International Standard 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 International
Standard and provide details.
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INTERNATIONAL STANDARD ISO 16070:2005(E)

Petroleum and natural gas industries — Downhole
equipment — Lock mandrels and landing nipples
1 Scope
This International Standard 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 or other equipment, but does
not cover the connections to the well conduit.
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.
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3601-1, Fluid power systems — O-rings — Part 1: Inside diameters, cross-sections, tolerances and size
identification code
ISO 3601-3, Fluid power systems — O-rings — Part 3: Quality acceptance criteria
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H,
K, N, T)
ISO 6892, Metallic materials — Tensile testing at ambient temperature
ISO 9712, Non-destructive testing — Qualification and certification of personnel
ISO 13628-3, Petroleum and natural gas industries — Design and operation of subsea production systems —
Part 3: Through flowline (TFL) systems
ISO 13665, Seamless and welded steel tubes for pressure purposes — Magnetic particle inspection of the
tube body for the detection of surface imperfections
ISO 15156-1, Petroleum and natural gas industries — Materials for use in H S-containing environments in oil
2
and gas production — Part 1: General principles for selection of cracking-resistant materials
ISO 15156-2, Petroleum and natural gas industries — Materials for use in H S-containing environments in oil
2
and gas production — Part 2: Cracking-resistant carbon and low alloy steels, and the use of cast irons
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ISO 16070:2005(E)
ISO 15156-3, Petroleum and natural gas industries — Materials for use in H S-containing environments in oil
2
and gas production — Part 3: Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys
1)
API Spec 5B , Specification for threading, gauging, and thread inspection of casing, tubing, and line pipe
threads
2)
ASME Boiler and Pressure Vessel Code:2004 , Section V, Non-destructive examination
ASME Boiler and Pressure Vessel Code:2004, Section Vlll, Division 1, Rules for construction of pressure
vessels
ASME Boiler and Pressure Vessel Code:2004, Section lX, Welding and brazing qualifications
3)
ASTM A 388/A 388M , Standard practice for ultrasonic examination of heavy steel forgings
ASTM A 609/A 609M, Standard practice for castings, carbon, low-alloy, and martensitic stainless steel,
ultrasonic examination thereof
ASTM D 395, Standard test methods for rubber property — Compression set
ASTM D 412, Standard test methods for vulcanized rubber and thermoplastic rubbers and thermoplastic
elastomers — Tension
ASTM D 638, Standard test method for tensile properties of plastics
ASTM D 1414, Standard test methods for rubber O-rings
ASTM D 1415, Standard test method for rubber property — International hardness
ASTM D 2240, Standard test methods for rubber property — Durometer hardness
ASTM E 94, Standard guide for radiographic examination
ASTM E 140, Standard hardness conversion tables for metals (relationship among Brinell hardness, Vickers
hardness, Rockwell hardness, Rockwell superficial hardness, Knoop hardness, and scleroscope hardness)
ASTM E 165, Standard test method for liquid penetrant examination
ASTM E 186, Standard reference radiographs for heavy-walled [2 to 4 ½-in. (51 to 114-mm)] steel castings
ASTM E 280, Standard reference radiographs for heavy-walled [4 ½ to 12-in. (114 to 305-mm)] steel castings
ASTM E 428, Standard practice for fabrication and control of steel reference blocks used in ultrasonic
examination
ASTM E 446, Standard reference radiographs for steel castings up to 2 in. (51 mm) in thickness
4)
BS 2M 54:1991 , Specification for temperature control in the heat treatment of metals
5)
SAE-AMS-H-6875:1998 , Heat treatment of steel raw materials

1) American Petroleum Institute, 1220 L Street NW, Washington, DC 20005-4070, USA.
2) American Society of Mechanical Engineers, Three Park Avenue, New York, NY 10016-5990, USA.
3) American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, USA.
4) BSI, Customer Services, 389 Chiswick High Road, London W4 4AL, UK.
5) SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, USA.
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ISO 16070:2005(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE For quality system terms used in the text of this International Standard but not defined below, see ISO 9000.
3.1
ambient temperature
prevailing temperature at test site
3.2
critical component
part that is pressure containing and/or load bearing
3.3
design acceptance criteria
defined limits placed on characteristics of materials, products, or services established by the organization,
customer, and/or applicable specifications to achieve conformity to the product design
[ISO/TS 29001:2003]
3.4
design validation
process of proving a design by testing to demonstrate conformity of the product to design requirements
[ISO/TS 29001:2003]
3.5
design verification
process of examining the result of a given design or development activity to determine conformity with
specified requirements
[ISO/TS 29001:2003]
3.6
full life cycle
expected period of time in which the product is specified to function according to the supplier’s/manufacturer’s
specifications
3.7
landing nipple
receptacle containing a profile designed for the installation of a lock mandrel
3.8
lock mandrel
retention device used for flow control equipment or other equipment
3.9
manufacturing
process and action performed by an equipment supplier/manufacturer that are necessary to provide finished
component(s), assembly(ies) and related documentation, that fulfil the requests of the user/purchaser and
meet the standards of the supplier/manufacturer
NOTE Manufacturing begins when the supplier/manufacturer receives the order and is completed at the moment the
component(s), assembly(ies) and related documentation are surrendered to a transportation provider.
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ISO 16070:2005(E)
3.10
model
lock mandrel or landing nipple equipment with unique components and operating characteristics which
differentiate it from other lock mandrel or landing nipple equipment of the same type
3.11
operating environment
set of conditions to which the product is exposed during its full life cycle
3.12
production/injection conduit
tubulars and equipment which provide the flow path between the reservoir and the christmas tree, including
the riser for subsea applications
3.13
profile
feature designed to receive the lock mandrel's locking mechanism
3.14
sealing device
device preventing passage (i.e. communication) of liquid and/or gas across the interface between the lock
mandrel and the landing nipple
3.15
size
relevant dimensional characteristics of the equipment as defined by the supplier/manufacturer
3.16
test pressure
pressure at which the equipment is tested based upon all relevant design criteria
NOTE See 6.5.1 for test pressure requirements.
3.17
test temperature
temperature at which the equipment is tested based upon all relevant design criteria
3.18
type
lock mandrel or landing nipple equipment with unique characteristics which differentiate it from other
functionally similar lock mandrel or landing nipple equipment
3.19
rated working pressure
landing nipple internal pressure design limit or lock mandrel differential pressure design limit from above
and/or below, as established by the supplier/manufacturer
4 Abbreviated terms
⎯ AQL Acceptance quality limit
⎯ NDE Non-destructive examination
⎯ TFL Through flowline
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ISO 16070:2005(E)
5 Functional specification
5.1 General
The user/purchaser shall prepare a functional specification for ordering products conforming to this
International Standard and specify the following requirements and operating conditions, as applicable, and/or
identify the supplier’s/manufacturer’s specific product. These requirements and operating conditions may be
conveyed by means of a dimensional drawing, data sheet or other suitable documentation.
5.2 Functional characteristics of lock mandrels and landing nipples
The following functional characteristics shall be specified, as applicable, for lock mandrels and landing
nipples:
a) conveyance method;
b) locking mechanism;
c) no-go;
d) selectivity;
e) sealing device;
f) dimensions;
g) passage of lines (electrical and/or hydraulic) in the annulus (for landing nipples only).
5.3 Well parameters
The following well parameters shall be specified, as applicable, for the lock mandrel and landing nipple:
a) size, mass, material and grade of the casing and tubing;
NOTE The term “weight” is often incorrectly used to mean mass, but this practice is deprecated.
b) well depth and angle from the vertical to the installed position;
c) casing and tubing architecture, deviations, and restrictions through which the lock mandrel and/or landing
nipple pass;
d) anticipated loading conditions which might be applied to the lock mandrel and landing nipple.
5.4 Operational parameters
The following operational parameters shall be specified, as applicable, for the lock mandrel and landing
nipple:
a) acidizing, including the acid composition, pressure, temperature, velocity, exposure time and any other
chemicals used during the stimulation;
b) fracturing, including proppant description, fracture fluid velocity and proppant-to-fluid ratio;
c) sand consolidation operations;
d) type of well intervention, including service equipment such as electric line, slick line, braided line, coiled
tubing, or snubbing equipment.
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ISO 16070:2005(E)
5.5 Environmental compatibility
The following shall be identified, as applicable, for the lock mandrel and landing nipple to ensure
environmental compatibility:
a) production/injection fluid composition, mass, chemical and/or physical composition, and the condition of
the fluid and/or its components [i.e. solid (sand production, scale, etc.), liquid and/or gaseous], to which
the lock mandrel and landing nipple is exposed during its full life cycle;
b) both the minimum and the maximum anticipated values of the production/injection pressures, pressure
differentials, temperatures and flow rates;
c) in cases where the user/purchaser has access to corrosion property historical data and/or research which
is applicable to the functional specification, the user/purchaser should state to the supplier/manufacturer
which material(s) has the ability to perform as required within the corrosion environment.
5.6 Compatibility with the related well equipment
5.6.1 Lock mandrels
The following information shall be specified, as applicable, to ensure the compatibility of the lock mandrel with
the related well equipment:
a) size and/or type of the lock mandrel required to position the flow control equipment in the landing nipple;
b) landing nipple size, model and type into which the lock mandrel is to be installed;
c) size, type, material, configuration and interface dimensions of the connection between the flow control
equipment and the lock mandrel;
d) size, type and configuration of other products to be used with the lock mandrel.
5.6.2 Landing nipples
The following information shall be specified, as applicable, to ensure the compatibility of the landing nipples
with the related well equipment:
a) top and bottom tubular connection(s), the material and dimensions of the landing nipple which is
connected to the tubing;
b) internal receptacle profile(s), sealing bore dimension(s), outside diameter, inside diameter and their
respective locations;
c) size, type and configuration of lock mandrels or other products to be used with the landing nipple.
5.7 Quality documentation
The quality documentation grade (i.e. Q1 or Q2 as given in 7.4) shall be specified by the user/purchaser.
5.8 Design validation
The design validation grade (i.e. V1, V2 or V3 as given in 6.5) shall be specified by the user/purchaser.
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ISO 16070:2005(E)
6 Technical specification
6.1 General
The supplier/manufacturer shall prepare the technical specification which responds to the requirements
defined in the functional specification. The supplier/manufacturer shall also provide product data as defined in
7.2.1 to the user/purchaser.
6.2 Technical characteristics of lock mandrels and landing nipples
6.2.1 Characteristics of lock mandrels
The lock mandrel, including sealing devices, shall have the capability to support the loading conditions as
specified in 5.3.c) and d) and to locate and seal as intended at the specified location and remain so under the
stated conditions of pressure, temperature and axial loads, as applicable (see 6.3.2, 6.5.3, and 6.5.4).
6.2.2 Characteristics of landing nipples
The landing nipple, including seals, shall have the capability to support the loading conditions as specified in
5.3.c) and d) and to receive and seal the lock mandrel as intended at the specified location under the stated
conditions of pressure, temperature and axial loads, as applicable (see 6.3.2 and 6.5.2). Additionally, certain
landing nipple designs contain control fluid redirection features and shall also perform in accordance with
6.5.2 f).
6.3 Design criteria
6.3.1 Design requirements
6.3.1.1 Design requirements shall include methods, assumptions and calculations, and shall include
those criteria for size, test, working and operating pressures, materials, environment (temperature limits,
chemicals) and other pertinent requirements upon which the design is based. Design documentation shall be
reviewed and verified by a qualified individual other than the individual who created the original design.
6.3.1.2 Lock mandrel and landing nipple equipment shall be manufactured to drawings and specifications
that are substantially the same as those of the size, type, and model of lock mandrel and landing nipple
equipment that has passed the validation test.
6.3.1.3 The supplier/manufacturer shall establish verified internal yield pressure, collapse pressure and
minimum tensile strength, temperature limits, and rated working pressure, excluding end connections. The
supplier/manufacturer shall identify the critical components of the product and the mode of stress. The
supplier/manufacturer shall calculate the stress level in the critical component(s) based upon the maximum
loads in the design input requirements to determine those components which are critically stressed. Critically
stressed components are those which are stressed to 90 % or greater of the minimum design yield strength of
the material. The minimum material condition and minimum material yield strength shall be used in the
calculations, which shall include consideration of temperature limit effects and thermal cycles. Metal
mechanical properties de-rating shall be in accordance with ASME Boiler and Pressure Vessel Code:2004,
Section II, Part D.
The design shall take into account the effects of pressure containment and pressure-induced loads.
Specialized conditions, such as pressure testing with temporary test plugs, shall also be considered.
6.3.1.4 Component and subassembly identification and interchangeability shall be required within each
supplier’s/manufacturer's size, type and model, including working pressure rating of lock mandrel and landing
nipple equipment. Additive dimensional tolerances of components shall be such that proper operation of the
lock mandrel and landing nipple equipment is assured. This requirement applies to supplier/manufacturer-
assembled equipment and to replacement components or sub-assemblies.
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ISO 16070:2005(E)
6.3.2 Materials
6.3.2.1 General
Materials and/or service shall be stated by the supplier/manufacturer and shall be suitable for the environment
specified in the functional specification. The supplier/manufacturer shall have written specifications for all lock
mandrel and landing nipple material. All materials used shall comply with the supplier’s/manufacturer's written
specifications.
The user/purchaser may specify materials for the specific corrosion environment in the functional specification.
Should the supplier/manufacturer propose to use another material, the supplier/manufacturer shall state that
this material has performance characteristics suitable for all parameters specified in the well and
production/injection parameters. This applies to metallic and non-metallic components.
Except for seals, material substitutions in qualified lock mandrels and landing nipples are allowed without
design validation testing provided that the supplier’s/manufacturer's selection criteria are documented and
meet all other requirements of this International Standard.
6.3.2.2 Metals
6.3.2.2.1 The supplier’s/manufacturer’s specifications shall define:
a) chemical composition limits;
b) heat treatment conditions;
c) mechanical property limits:
1) tensile strength;
2) yield strength;
3) elongation;
4) hardness.
6.3.2.2.2 The mechanical properties specified in 6.3.2.2.1 shall be verified by tests conducted on a material
sample produced from the same heat of material. The material sample shall undergo the same heat treatment
process as the component it qualifies. Material subsequently heat-treated from the same heat of material shall
be hardness tested after processing to confirm compliance with the hardness requirements of the
supplier’s/manufacturer’s specifications. The hardness results shall verify through documented correlation that
the
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