EN ISO 15136-1:2001

SLOVENSKI STANDARD
01-januar-2002
Downhole equipment for petroleum and natural gas industries - Progressing cavity
pump systems for artificial lift - Part 1: Pumps (ISO 15136-1:2001)
Petroleum and natural gas industries - Pipeline transportation systems - Welding of
pipelines (ISO 13847:2000 modified)
Erdöl- und Erdgasindustrien - Rohrleitungstransportsysteme -Schweißen

von Rohrleitungen (ISO 13847:2000 modifiziert)
Industries du pétrole et du gaz naturel - Conduites pour systemes de transport -
Soudage des conduites (ISO 13847:2000 modifiée)
Ta slovenski standard je istoveten z: EN ISO 15136-1:2001
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 15136-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2001
ICS 75.180.10
English version
Downhole equipment for petroleum and natural gas industries -
Progressing cavity pump systems for artificial lift - Part 1: Pumps
(ISO 15136-1:2001)
Equipement de fond de trou pour les industries du pétrole Bohrloch-Ausrüstung für die Erdöl- und Erdgasindustrie -
et du gaz naturel - Pompes de fond à cavité progressive Exenterschneckentiefpump-Fördersysteme - Teil 1:
pour activation des puits - Partie 1: Pompes (ISO 15136- Pumpen (ISO 15136-1:2001)
1:2001)
This European Standard was approved by CEN on 15 July 2001.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15136-1:2001 E
worldwide for CEN national Members.

CORRECTED  2002-01-30
Foreword
This document (ISO 15136-1:2001) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum and natural gas industries" in
collaboration with Technical Committee CEN/TC 12 "Materials, equipment and offshore
structures for petroleum and natural gas industries", the secretariat of which is held by
AFNOR.
This European Standard shall be given the status of a national standard, either by publication
of an identical text or by endorsement, at the latest by June 2002, and conflicting national
standards shall be withdrawn at the latest by June 2002.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
Endorsement notice
The text of the International Standard ISO 15136-1:2001 has been approved by CEN as a
European Standard without any modifications.
INTERNATIONAL ISO
STANDARD 15136-1
First edition
2001-07-15
Downhole equipment for petroleum and
natural gas industries — Progressing
cavity pump systems for artificial lift —
Part 1:
Pumps
Équipement de fond de trou pour les industries du pétrole et du gaz
naturel — Pompes de fond à cavité progressive pour activation des
puits —
Partie 1: Pompes
Reference number
ISO 15136-1:2001(E)
©
ISO 2001
ISO 15136-1:2001(E)
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ii © ISO 2001 – All rights reserved

ISO 15136-1:2001(E)
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Terms and definitions .1
3 Symbols .3
4 Functional specification.3
4.1 General.3
4.2 PCP type .3
4.3 Well parameters .3
4.4 Operational parameters .4
4.5 Environmental compatibility.4
4.6 Compatibility with well equipment.5
4.7 Quality control requirements.5
4.8 Design validation documentation .5
5 Technical specification .5
5.1 General.5
5.2 PCP characteristics .5
5.3 Design criteria.5
5.4 Design verification.8
5.5 Design validation .9
5.6 Design change .10
5.7 Functional test parameters.10
6 Supplier/manufacturer requirements.11
6.1 Document and data control .11
6.2 User/purchaser documentation.11
6.3 Product identification.11
6.4 Quality control.12
6.5 Functional tests .12
Annex A (normative) Example of performance curves for pump selection .13
Annex B (normative) PCP test report data sheet .14
Annex C (informative) Application design specification data sheet.15
Annex D (informative) Accessories .16
Annex E (informative) Engineering methodology.21
Annex F (informative) Description of PCP system.27
ISO 15136-1:2001(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 3.
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 part of ISO 15136 may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 15136-1 was prepared by Technical Committee ISO/TC 67, Materials, equipment and
offshore structures for petroleum and natural gas industries, Subcommittee SC4, Drilling and production
equipment.
ISO 15136 consists of the following parts, under the general title Downhole equipment for petroleum and natural
gas industries — Progressing cavity pump systems for artificial lift:
� Part 1: Pumps
� Part 2: Drive heads
Annexes A and B form a normative part of this part of ISO 15136. Annexes C, D, E and F are for information only.
iv © ISO 2001 – All rights reserved

ISO 15136-1:2001(E)
Introduction
This part of ISO 15136 has been developed by users/purchasers and suppliers/manufacturers of progressing cavity
pumps (PCP) for artificial lift use in the petroleum and natural gas industries worldwide. This part of ISO 15136 is
intended to give requirements and information to both parties in the selection, manufacture, testing and use of
progressing cavity pumps. Further, this part of ISO 15136 addresses supplier/manufacturer requirements, which
set the minimum parameters with which suppliers/manufacturers must comply to claim conformity with this part of
ISO 15136.
A progressing cavity pump comprises two helical gears, one rotating inside the other. The stator and rotor axes are
parallel and spaced between each other. The external helical gear (stator) has one more thread (or tooth) than the
internal helical gear (rotor). Whatever the number of threads of the two elements, they must always differ by one.
The fluid moves from suction to discharge. The discharge and the suction are always isolated from each other by a
constant length seal line. Definitions of the accessories, engineering methodology and description of the PCP
system, including illustrations, are provided in annexes D, E and F respectively.
Users of this part of ISO 15136 should be aware that further or differing requirements might be needed for
individual applications. This part of ISO 15136 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 part of ISO 15136 and provide details.
INTERNATIONAL STANDARD ISO 15136-1:2001(E)
Downhole equipment for petroleum and natural gas industries —
Progressing cavity pump systems for artificial lift —
Part 1:
Pumps
1 Scope
This part of ISO 15136 provides guidelines and requirements for subsurface progressing cavity pumps (PCP) used
in the petroleum and natural gas industries for the production of single and multiphase fluids, based on the principle
defined in [2].
This part of ISO 15136 is applicable to the subsurface progressing cavity pump. It refers to, but is not applicable to,
intermediate components and accessories that are necessary to make a complete pumping unit. It does not include
requirements for shipping, loading and transportation.
2 Terms and definitions
For the purposes of this part of ISO 15136, the following terms and definitions apply (for illustration, see annexes D,
EandF).
2.1
cavity
lenticular, spiral, separate volume created between the pump stator and rotor when they are assembled
2.2
displacement
volume of fluid pumped in one revolution of the rotor in the stator
2.3
drive string
device transmitting power (usually sucker rods) between the drivehead and the PCP
2.4
dynamic level
fluid level under standard conditions of temperature and pressure when the PCP is in operation
NOTE Standard conditions, unless otherwise indicated, are 15 �C and 0,101 3 MPa.
2.5
flowrate
volume of fluid pumped per time unit
2.6
head rating
maximum allowable differential pressure of the PCP
ISO 15136-1:2001(E)
2.7
helix
continuous spiral with a constant pitch
2.8
insert pump
pump whose stator is inserted into the tubing using the drive string
2.9
interference
radial fit between the pump rotor and stator
2.10
pitch length
distance between two crests belonging to the same seal line
NOTE The rotor and stator have different pitch lengths, p and p respectively (see Figures E.1, E.2 and F.1).
r s
2.11
PCP
progressing cavity pump
pump consisting of a stator and a rotor whose geometry of assembly is such that it creates two or more series of
lenticular, spiral, separate cavities
2.12
rotor
pump shaft, whose external surface is in the form of a single or multiple helix, provided with a connection to attach
to the drive string
2.13
rotor stop
device which determines the rotor position during PCP installation
SeeFigureD.1.
2.14
seal line
helix formed by the line of contact between rotor and stator
2.15
slippage
fluid leakage occurring across the dynamic seal lines between the cavities
2.16
static level
stabilized fluid level under standard conditions of temperature and pressure when the PCP is at a stopped position
NOTE Standard conditions, unless otherwise indicated, are 15 °C and 0,101 3 MPa.
2.17
stator
housing and a lining (typically elastomeric) in the form of a double or multiple internal helix, which always has one
more helix than the rotor, with a connection to the production tubing
2.18
submergence
difference between the dynamic level and the PCP setting depth
2 © ISO 2001 – All rights reserved

ISO 15136-1:2001(E)
2.19
tubing-conveyed pump
pump whose stator is connected to the bottom of the tubing
3 Symbols
d rotor minor diameter, i.e. the diameter of the circle tangent to the inner rotor lobes
r
D rotor major diameter, i.e. the diameter of the circle tangent to the outer rotor lobes
r
d stator minor diameter, i.e. the diameter of the circle tangent to the inner stator lobes
s
D stator major diameter, i.e. the diameter of the circle tangent to the outer stator lobes
s
P rotor pitch length
r
P stator pitch length
s
n number of rotor lobes
r
N pump revolutions per minute
For illustration, see Figures E.1, E.2 and E.3.
4 Functional specification
4.1 General
The user/purchaser shall prepare a functional specification to order products which conform with this part of
ISO 15136 in which the requirements and operating conditions listed in 4.2 to 4.6, as appropriate, and/or the
supplier’s/manufacturer’s specific product (see example of data form in annex C) shall be specified.
These requirements and operating conditions may be conveyed by means of a dimensional drawing, data sheet or
other suitable documentation.
4.2 PCP type
� Tubing-conveyed;
� insert PCP.
4.3 Well parameters
� Sizes, grades, mass, thread of casing, liner, tubing;
� depth (true vertical and measured);
� perforation intervals (true vertical and measured);
� deviation survey;
� packer, anchor data, landing nipple or other restriction if any.
ISO 15136-1:2001(E)
4.4 Operational parameters
� PCP setting depth;
� current production system and rate;
� planned production rate;
� static and dynamic fluid level; or
� static level and productivity index; or
� dynamic fluid level and bottomhole pressure;
� normal producing tubing and casing pressures;
� required wellhead pressure;
� chemical treatments;
� well monitoring and alarm points.
4.5 Environmental compatibility
� Specific gravity of oil and water;
� oil/emulsion viscosity;
� bubble point;
� production gas/oil ratio;
� water cut;
� mole fraction (as a percent) of aromatic solvents, (i.e. benzene, toluene and xylenes);
� gas specific gravity;
� mole fraction (as a percent) of H S and CO ;
2 2
� solids content (i.e. type, size, shape and concentration);
� corrosive agents, (i.e. type and concentration);
� PCP inlet temperature or reservoir temperature and temperature gradient;
� wellhead temperature range;
� pH;
� completion fluid characteristics;
� rotor material, plating/coating material;
� elastomer material.
4 © ISO 2001 – All rights reserved

ISO 15136-1:2001(E)
4.6 Compatibility with well equipment
� Tubing threads or insert size;
� wellhead connection;
� drive string (type, size, properties and connection);
� power source;
� electrical supply (voltage, frequency, zone classification);
� ambient temperature (minimum, maximum).
4.7 Quality control requirements
Quality control requirements may be specified by the user/purchaser.
4.8 Design validation documentation
User/purchaser may request performance curve and test report, as per annex A and annex B.
5 Technical specification
5.1 General
The aspects in 5.2 to 5.7 shall be considered in the design/application of a PCP system (see annex C).
5.2 PCP characteristics
Physical dimensions can limit the selection of a PCP.
The stator shall:
� be able to pass through the casing and all other devices which are part of the casing string;
� allow annular space for tools, i.e. over-shot or wash pipe;
� allow annular space for gas separation;
� allow annular space for fluid passage, if the PCP is landed below perforations.
The rotor shall be able to pass through the tubing and all other devices which are part of the tubing string.
A sufficiently large inside diameter shall be provided in the tubing to allow for the eccentric movement of the rotor. If
the tubing inside diameter is not large enough, a transition length of tubing (or pup joint) having an acceptable
inside diameter shall be placed immediately above the stator (see Figure D.2).
5.3 Design criteria
5.3.1 Head requirements
The differential pressure across the PCP should not exceed the head rating of the PCP, as efficiency will be
affected and could result in premature wear on components.
ISO 15136-1:2001(E)
The differential pressure is the sum of the following, taking into consideration gas and different liquid densities:
� the head of fluid in the tubing minus the head of fluid in the annulus at the PCP inlet;
� the frictional loss in the tubing between the PCP outlet and the wellhead, which is a function of:
� inside diameter of the tubing;
� outside diameter of the drive string;
� pressure drop across restrictions such as couplings and centralizers;
� viscosity and velocity of the fluid.
� the flowline back-pressure.
5.3.2 Volume requirements
The PCP shall be capable of displacing the volume required per revolution at the anticipated head within the speed
limitations mentioned in 5.3.3.6. Volume requirements should consider the presence of free gas, transport of solids
and PCP cooling.
5.3.3 Materials
5.3.3.1 Thermal effect — Elastomers
Wellbore temperature and fluid characteristics shall be considered for each application.
The PCP operating temperature may cause thermal expansion of the elastomer. Elastomer expansion will result in
reduction of the internal stator diameter. Therefore, the rotor shall be sized to accommodate for this reduction to
ensure appropriate interference fit.
The maximum operating temperature of the PCP shall be below the maximum rated working temperature of the
elastomer published by the manufacturer.
The PCP operating temperature is influenced by:
� fluid temperature around the PCP;
� friction effect due to interference, rotating speed and differential pressure;
� elastic deformation;
� gas compression;
� fluid lubricity;
� heat transfer effects.
5.3.3.2 Chemical effects — Elastomers
Detrimental effects on elastomers, such as swelling and hardening, can be caused by chemicals, aromatic solvents
(i.e. benzene, toluene and xylenes), napthenes and water. Rotor/stator sizing shall be adjusted accordingly.
Where chemical treatments are anticipated, caution shall be exercised in the selection of materials.
6 © ISO 2001 – All rights reserved

ISO 15136-1:2001(E)
5.3.3.3 Elastomer data
Elastomer designations are required for the purpose of differentiating the elastomers of an individual
manufacturer's product line. Designations shall include a general description of elastomer type.
Manufacturers shall not change the formulation of a designated elastomer unless changes are within the original
performance parameters Each new or revised formulation shall have a new designation. However, each
manufacturer has the right to keep his formulations confidential.
General performance parameters are required for each of the elastomers:
� control of bonding process (resistance to shearing, traction);
� elastomer resistance to temperature;
� elastomer resistance to gas under pressure (H S, CO );
2 2
� elastomer resistance to aromatics;
� elastomer resistance to explosive decompression;
� elastomer resistance to abrasion;
� swelling test and/or calculation;
� calculation of rotor size versus temperature, swelling and elastomer type.
5.3.3.4 Abrasion
The effects of abrasion shall be considered in the selection of rotor and stator materials.
Abrasive wear is a function of:
� solids content (type, size, shape and concentration);
� particle velocity;
� pressure differential per cavity;
� rotating speed.
5.3.3.5 Inlet conditions
The PCP requires a positive inlet pressure to operate efficiently.
The manufacturer shall advise the minimum submergence/inlet pressure required by the pump.
5.3.3.6 Rotating speed
The following parameters shall be considered when establishing the rotational speed for normal operation:
� total volume to be pumped, considering slippage;
� abrasive solids content;
� fluid viscosity and PCP inlet pressure;
ISO 15136-1:2001(E)
� PCP submergence;
� vibration of the rods and tubing, considering harmonic speeds, well deviation;
� wear on components;
� maximum speed rating of all system components.
The rotational speed of the PCP shall be adjusted to achieve optimum well production.
5.3.3.7 Dimensional data
The following dimensions shall be specified:
� outside diameter of the stator and the rotor;
� length of the rotor helix;
� length of the stator elastomer;
� length from the elastomer to the rotor stop;
� rotor and stator thread specifications;
� maximum speed of PCP;
� head rating;
� displacement.
5.3.3.8 Metallurgy and finishes
The following parameters shall be considered when selecting the materials for the pump:
� metallurgy of the PCP components;
� degree of rotor polishing (surface roughness);
� characteristics of rotor coating/plating (surface hardness, roughness, resistance to wear);
� minimal thickness of coating/plating on the major diameter of the rotor.
Where chemical treatments are anticipated, caution shall be exercised in the selection of materials.
5.4 Design verification
Design verification shall be performed to ensure that each PCP design meets the supplier/manufacturer technical
specifications. Design verification includes activities such as design reviews, design calculations, physical tests,
comparison with similar designs and historical records of defined operating conditions.
As a minimum:
� verify the flow capacity of the PCP considering the rotor and stator size;
� verify the head capacity of the PCP considering the number of stator cavities;
� verify the tightening between rotor and stator versus temperature.
8 © ISO 2001 – All rights reserved

ISO 15136-1:2001(E)
5.5 Design validation
5.5.1 Validation parameters
To verify flow and head capacity of each PCP, the following test shall be conducted with water at a rotating speed
of 500 r/min, except for high volume/high pressure pumps where speed can be reduced to limit power consumption
as agreed between supplier/manufacturer and user/purchaser:
� at zero differential pressure and zero leakage;
� at maximum operating differential pressure at a target of 15 % leakage (minimum 10 %, maximum 20 %).
The resulting performance curve is the performance baseline for acceptance testing of the PCP. Consideration
shall be given to a swelling test on an elastomer sample wi
...