ISO 10431:1993

Petroleum and natural gas industries — Pumping units — Specification

Lays down the specification covering the design and rating. Specifies the requirements for the dimensional characteristics, chemical and mechanical properties and gauging practice. Requirements are specified in the sixteenth edition of API Specification 11E (Spec 11E), October 1989, which is adopted as ISO 10431. For the purposes of international standardization, modifications have been made that are outlined.

Industries du pétrole et du gaz naturel — Unités de pompage — Spécifications

General Information

• Status: Published
• Publication Date: 22-Dec-1993
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: ISO/TC 67/SC 4 - Drilling and production equipment
• Drafting Committee: ISO/TC 67/SC 4/WG 4 - Production equipment
• Current Stage: 9520 - Withdrawal ballot initiated
• Start Date: 19-Aug-2024
• Completion Date: 19-Aug-2024

Standards Content (Sample)

INTERNATIONAL
ISO
STANDARD
First edition
1993-12-15
Petroleum and natura1 gas industries -
Pumping units - Specification
Industries du petrole et du gaz na turel - Unitbs de pompage -
Spkifica tions
Reference number
ISO 10431: 1993(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. Esch member body interested in a subject for
which a technical committee has been established has the right to be re-
presented 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.
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.
International Standard ISO 10431 was prepared by the American Petro-
leum Institute (API) (as Spec 11 E, 16th edition) and was adopted, under
a special “fast-track procedure ”, by Technical Committee ISO/TC 67, Ma-
terials, equipment and offshore structures for Petroleum and natura1 gas
industries, in parallel with its approval by the ISO member bodies.
0 ISO 1993
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopyrng and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
42 ISO
Introduction
International Standard ISO 10431:1993 reproduces the content of
API Spec 11 E, 16th edition, 1989 and its Supplement 1 (July 1, 1991).
ISO, in endorsing this API document, recognizes that in certain respects
the latter does not comply with all current ISO rules on the presentation
and content of an International Standard. Therefore, the relevant technical
body, within lSO/TC 67, will review ISO 10431:1993 and reissue it, when
practicable, in a form complying with these rules.
This Standard is not intended to obviate the need for Sound engineering
judgement as to when and where this Standard should be utilized and
users of this Standard should be aware that additional or differing require-
ments may be needed to meet the needs for the particular Service in-
tended.
Standards referenced herein may be replaced by other international or
national Standards that tan be shown to meet or exceed the requirements
of the referenced Standards.
Appendix G to this document shall not be considered as requirements.
. . .
Ill
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INTERNATIONAL STANDARD 0 ISO
Petroleum and natura1 gas industries - Pumping
units - Specification
1 Scope
This International Standard lays down specification covering the design and rating of pumping units.
2 Requirements
Requirements are specified in:
“API Specification 11 E (Spec 11 E), Sixteenth Edition, October 1, 1989 - Specification for Pumping Units ”,
which is adopted as ISO 10431.
For the purposes of internationl standardization, however, modifications shall apply to specific clauses and para-
graphs of publication API Spec 11 E. These modifications are outlined below.
Throughout publication API Spec 11 E, the conversion of English units shall be made in accordance with ISO 31,
Parts 1 and 3. In particular,
LENGTH 1 inch (in) = 25,4 mm (exactly)
= 304,8 mm (exactly)
1 foot (ft)
MASS 1 pound (Ib) = 0,453 59237 kg (exactly)
PRESSURE 1 pound-forte per Square inch (Ibf/in*) = 6894,76 Pa
or 1 psi
VOLUME 1 cubic inch (in3) = 16,387 064.1 O-3 dm3 (exactly)
AREA 1 Square inch (in*) = 645,16 mm* (exactly)
VELOCITY 1 foot per second (ft/s) = 0,3048 m/s (exactly)
TORQUE 1 inch pound-forte (inlbf) - = 0,112985 N*m
Page 11
Information given in the POLICY is relevant to the API publication only.
Page 64
Appendix G
Information relating to the use of API monogram is rel evant to the API publication only.

(Blank Page)
Specification for Pumping Units
API SPECIFICATION IIE (SPEC IIE)
SIXTEENTH EDITION, OCTOBER 1, 1989
American Petroleum Institute
1220 L Street, Northwest
Washington, DC 20005
rT>
Supplement 1
(July 1, 1991)
Specification for Pumping Units
API SPECIFICATION IIE (SPEC IIE)
SIXTEENTH EDITION, OCTOBER 1, 1989
American Petroleum Institute
1220 L Street, Northwest
Washington, DC 20005
Issued by
AMERICAN PETROLEUM INSTITUTE
Production Department
FOR INFORMATION CONCERNING TECHNICAL CONTENT OF
THIS PUBLICATION CONTACT THE API PRODUCTION DEPARTMENT,
1201 MAIN STREET, SUITE 2535, DALLAS, TX 75202-3904 - [phone].
SEE BACK COVER FOR INFORMATION CONCERNING HOW TO OBTAIN
ADDITIONAL COPIES OF THIS PUBLICATION.
Users of this publication should become completely familiar with its scope
and content, including any provisions it may have regarding marking of
manufactured products. This document is intended to Supplement rather than
replace individual engineering judgment.
OFFICIAL PUBLICATION
REG. U.S. PATENT OFFICE
Copyright @ 1991 American Petroleum Institute

Foreword Page 6. Replace the equation in Column 4, Row 2 of
Table 2.1 with:
This supplement contains revisions authorized at the
1990 Standardization Conference as reported in Circ * JiyE-7
PS-1920 and approved by letter ballot.
SJ
Page 5. Replace Par. 2.4 and Fig. 2.1 with the
Delete all the nomenclature at the end of Table 2.1 and
following:
replace it with:
2.4 Walking Bearm The following formula shall be
* Where:
used for rating conventional walking beams as shown
J= Torsional constant, in4
in Fig. 2.1.
l= Longest laterally, unbraced length of beam,
w= febSx
inches (longer of A or C (See Fig. 2.1)).
A
E =Modulus of elasticity; 29,000,OOO psi.
Wherein:
1, =Weak axis moment of inertia, in4.
W = walking-beam rating in pounds of polished-
rod load.
G =Shear modulus; 11,200,OOO psi.
f compressive stress in bending in pounds per
cb =
Square inch. See Table 2.1 for maximum
allowable stress.
s, = section modulus in cubic inches. The gross
section of the rolled beam may be used
except that holes or welds are not permissi-
ble on the tension flange in the critical Zone.
See Fig. 2.1.
A= distance from centerline of saddle bearing to
centerline of well in inches. See Fig. 2.1.
C= distance from centerline of saddle bearing to
centerline of equalizer bearing in inches. See
Fig. 2.1.
b CRITICAL ZONE IN
TENSION FLANGE
FIG. 2.1
WALKING-BEAM ELEMENTS
Order No. 811-05201
Additional copies available from
AMERICAN PETROLEUM INSTITUTE
Publications and Distribution Section
1220 L Street, NW
Washington, DC 20005
[phone]
Issued by
AMERICAN PETROLEUM INSTITUTE
Production Department
FOR INFORMATION CONCERNING TECHNICAL CONTENTS OF
THIS PUBLICATION CONTACT THE API PRODUCTION DEPARTMENT,
1201 MAIN STREET, SUITE 2535, DALLAS, TX 75202-3904 - [phone].
SEE BACK COVER FOR INFORMATION CONCERNING HOW TO OBTAIN
ADDITIONAL COPIES OF THIS PUBLICATION.
Users of this publication should become completely familiar with its scope
and content, including any provisions it may have regarding marking of
manufactured products. This document is intended to Supplement rather than
replace individual engineering judgment.
OFFICIAL PUBLICATION
REG. U.S. PATENT OFFICE
Copyright Q 1989 American Petroleum Institute

2 American Petroleum Institute
TABLE OF CONTENTS
Page
Policy . . . . . . . . . . . . . . . . . . . . . . . . . .g.e~~.o.~~. 3
Foreword.=. 4
Sect.1: Scope.~ .
.....................................
Sect. 2: Pumping-Unit Structures 5
......................................
Se&. 3: Pumping-Unit Reducers. 9
Sect. 4: Inspection and Rejection. . . . . . . . . . . . . . . . . . . . . . . . . . -. . . . . . . . . . 29
Appendix A: Approved Data Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Appendix B: Recommended Practice for the Calculation and
Application of Torque Factor on Pumping Units . . . . . . . . 32
(Rear Mounted Geometry Class 1 Lever Systems with
Crank Counterbalance)
Appendix C: Recommended Practice for the Calculation and
Application of Torque Factor Oh Pumping Units . . . . . . . . 39
(Front Mounted ’Geometry Class 111 Lever Systems with
Crank Counterbalance)
Appendix D: Recommended Practice for the Calculation and
Application of Torque Factor on Pumping Units . . . . . . . . 44
(Front Mounted Geometry Class 111 Lever System
Air Counterbalance)
Appendix E: Recommended Practice for the Calculation and
Application of Torque Factor on Pumping Units . . . . . . . . 48
(Rear Mounted Geometry Class 1 Lever Systems with
Phased Crank Counterbalance)
Appendix F: Recommended Practice for Calculation Torque Ratings
for Pumping Unit Gear Reducers . . . . . . . . . . . . . . . . . . . . . D 54
Appendix G: Use of API Monogram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Note
Requests for Permission to reproduce or translate all or
any part of the material published herein should be
This edition Supersedes the fifteenth edition of Spec
addressed to the Director, American Petroleum Institute,
11E. It includes changes adopted at the 1988 Stand-
Production Department, 1201 Main Street, Suite 2535,
ardization Conference as reported in Circ PS-1858 and
Dallas TX 7520%?90.&
subsequently passed by letter ballot.
IO
Spec 11E: Pumping Units
POLICY
API PUBLICATIONS NECESSARILY ADDRESS
THING CONTAINED IN THE PUBLICATION BE
PROBLEMS OF A GENERAL NATURE. WITH CONSTRUED AS INSURING ANYONE AGAINST
RESPECT TO PARTICULAR CIRCUMSTANCES,
LIABILITY FOR INFRINGEMENT OF LETTERS
LOCAL, STATE AND FEDERAL LAWS AND REG- PATENT.
ULATIONS SHOULD BE REVIEWED.
GENERALLY, API STANDARDS ARE REVIEWED
AND REVISED, REAFFIRMED, OR WITHDRAWN
API IS NOT UNDERTAKING TO MEET DUTIES
AT LEAST EVERY FIVE YEARS. SOMETIMES A
OF EMPLOYERS, MANUFACTURERS OR SUP-
ONE-TIME EXTENSION OF UP TO TWO YEARS
PLIERS TO WARN AND PROPERLY TRAIN AND
WILL BE ADDED TO THIS REVIEW CYCLE. THIS
EQUIP THEIR EMPLOYEES, AND OTHERS EX-
PUBLICATION WILL NO LONGER BE IN EFFECT
POSED, CONCERNING HEALTH AND SAFETY
FIVE YEARS AFTER ITS PUBLICATION DATE
RISKS AND PRECAUTIONS, NOR UNDERTAKING
AS AN OPERATIVE API STANDARD OR, WHERE
THEIR OBLIGATIONS UNDER LOCAL, STATE, OR
AN EXTENSION HAS BEEN GRANTED, UPON
FEDERAL LAWS.
REPUBLICATION. STATUS OF THE PUBLICATION
NOTHING CONTAINED IN ANY API PUBLICA-
CAN BE ASCERTAINED FROM THE API AUTHOR-
TION IS TO BE CONSTRUED AS GRANTING ANY
ING DEPARTMENT (TEL. [phone]). A CATALOG
RIGHT, BY IMPLICATION OR OTHERWISE, FOR
OF API PUBLICATIONS AND MATERIALS IS
THE MANUFACTURE, SALE, OR USE OF ANY
PUBLISHED ANNUALLY AND UPDATED QUAR-
METHOD, APPARATUS, OR PRODUCT COVERED
TERLY BY API, 1220 L ST., N.W., WASHINGTON,
BY LETTERS PATENT. NEITHER SHOULD ANY-
D.C. 20005.
4 American Petroleum Institute
API SPECIFICATION FOR PUMPING UNITS
Foreword 3. Pumping-unit gear reducer.
4. Pumping-unit chain reducer.
a. This specification is under the jurisdiction of
5. Pumping-unit beam counterbalance.
the Committee on Standardization of Production
Equipment. 6. Pumping-unit trank counterbalance.
e. Attention Users of this Publication: Portions of
b. This specification covers designs and ratings of
beam-type pumping-unit components. It does not this publication have been changed from the previous
cover Chemical properties of materials, nor the use
edition. The location of changes has been marked with a
of the equipment.
bar in the margin. In some cases the changes are signif-
icant, while in other cases the changes reflect minor
c. Approved forms are given in Appendix A f or
rating of trank couuterbalances and for recor*ding
editorial adjustments. The bar notations in the margins
pumping-unit stroke and torque factors.
are provided as an aid to users to identify those Parts of
this publication that have been changed from the pre-
d. The following nomenzlature is Standard:
vious edition, but API makes no warranty as to the
1. Pumping unit.
accuracy of such bar notations.
2. Pumping-unit structure.
SECTION 1
SCOPE
1.4 API Specifications may be used by anyone desir-
1.1 This specification covers the design and rat-
ing of the following:
ing to do so, and diligent effort has been made by the
8. Pumping-unit structure.
Institute to assure the accuracy and reliability of the
b. Pumping-unit gear reducer. data contained therein. However, the Institute makes no
c. Pumping-unit chain reducer.
representation, warranty, or guarantee in connection
with the publication of any API Specification and hereby
expressly disclaims any liability or responsibility for
1.2 American Petroleum Institute (API) Specifica-
loss or darnage resulting from their use, for any viola-
tions are published as aids to the procurement of stand-
tion of any federal, state, or municipal regulation with
ardized equipment and materials, as well as instruc-
which an API Specification may conflict, or for the
tions to manufacturers of equipment or materials
infringement of any patent resulting from the use of an
covered by an API Specification. These Specifications
API Specification.
are not intended to obviate the need for Sound engineer-
ing, nor to inhibit in any way anyone from purchasing
1.5 Any manuf
...