Specification for Cements and Materials for Well Cementing

ANSI/API SPECIFICATION 10A

TWENTY-FOURTH EDITION, DECEMBER 2010

ISO 10426-1:2009 (Identical), Petroleum and natural gas industries—Cements and materials for well cementing—Part 1: Specification

Specification for Cements and Materials for Well Cementing

Downstream Segment

ANSI/API SPECIFICATION 10A

TWENTY-FOURTH EDITION, DECEMBER 2010

ISO 10426-1:2009 (Identical), Petroleum and natural gas industries—Cements and materials for well cementing—Part 1: Specification

Special Notes

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Copyright © 2010 American Petroleum Institute

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Should: As used in a standard, “should” denotes a recommendation or that which is advised but not required in order to conform to the specification.

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Standards referenced herein may be replaced by other international or national standards that can be shown to meet or exceed the requirements of the referenced standard.

Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW, Washington, DC 20005, standards@api.org.

This American National Standard is under the jurisdiction of the API Subcommittee 10 on Well Cements. This standard is considered identical to the English version of ISO 10426-1. ISO 10426-1 was prepared by Technical Committee ISO/TC 67, Subcommittee 3 on Drilling and completion fluids, and well cements. This identical version includes ISO 10426-1 Technical Corrigendum, 2010.

In this American National Standard, the following editorial changes have been made in the document: Annex B is regional annex added for API Monogram licensees.

This standard replaces API Specification 10A, 23rd edition.

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Contents Page

Foreword vi

Introduction vii

1. Scope 1

2. Normative references 1

3. Terms and definitions 2

4. Requirements 3

   1. Specification, chemical and physical requirements 3

   2. Sampling frequency, timing of tests, and equipment 7

5. Sampling procedure 8

6. Fineness tests 8

   1. Procedure 8

   2. Requirements 8

7. Preparation of slurry for free-fluid, compressive strength and thickening-time tests 8

   1. Apparatus 8

   2. Procedure 10

8. Free-fluid test (formerly free water) 11

   1. Apparatus 11

   2. Calibration 15

   3. Procedure 16

   4. Calculation of percent free fluid 16

   5. Acceptance requirements 17

9. Compressive strength tests 17

   1. Apparatus 17

   2. Procedure 18

   3. Test procedure (after ASTM C109/C109M) 20

   4. Compressive strength acceptance criteria 20

10. Thickening-time tests 21

    1. Apparatus 21

    2. Calibration 27

    3. Procedure 29

    4. Thickening time and consistency 31

    5. Specification acceptance requirements 31

11. Marking 32

12. Packing 32

13. Bentonite 32

Annex A (informative) Calibration procedures for thermocouples, temperature measuring systems, and controllers 33

Annex B (informative) Use of the API Monogram by Licensees 35

Bibliography 38

v

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 10426-1 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 3, Drilling and completion fluids, and well cements.

This third edition cancels and replaces the second edition (ISO 10426-1:2005), which has been technically revised.

ISO 10426 consists of the following parts, under the general title Petroleum and natural gas industries — Cements and materials for well cementing:

• Part 1: Specification

  
  

• Part 2:Testing of well cements

  
  

• Part 3: Testing of deepwater well cement formulations

  
  

• Part 4: Preparation and testing of foamed cement slurries at atmospheric pressure

  
  

• Part 5: Determination of shrinkage and expansion of well cement formulations at atmospheric pressure

  
  

• Part 6: Methods for determining the static gel strength of cement formulations

vi

Introduction

This part of ISO 10426 is based on ISO 10426-1:2005 with the intent that the 24th edition of API Spec 10A will be identical to this part of ISO 10426.

It is necessary that users of this part of ISO 10426 be aware that further or differing requirements can be required for individual applications. This part of ISO 10426 is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This can be particularly applicable where there is innovative or developing technology. Where an alternative is offered, it is the responsibility of the vendor to identify any variations from this part of ISO 10426 and provide details.

In this part of ISO 10426, where practical, US Customary (USC) or other units are included in brackets for information. The units do not necessarily represent a direct conversion of SI to USC units, or USC to SI. Consideration has been given to the precision of the instrument making the measurement. For example, thermometers are typically marked in 1° increments, thus temperature values have been rounded to the nearest degree.

In this part of ISO 10426, calibrating an instrument refers to assuring the accuracy of the measurement. Accuracy is the degree of conformity of a measurement of a quantity to its actual or true value. Accuracy is related to precision, or reproducibility, of a measurement. Precision is the degree to which further measurements or calculations will show the same or similar results. Precision is characterized in terms of the standard deviation of the measurement. The results of calculations or a measurement can be accurate, but not precise, precise but not accurate, neither or both. A result is valid if it is both accurate and precise.

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API Specification 10A/ISO 10426-1

Petroleum and natural gas industries – Cements and materials for well cementing

Part 1:

Specification

1. Scope

   
   

   This part of ISO 10426 specifies requirements and gives recommendations for six classes of well cements, including their chemical and physical requirements and procedures for physical testing.

   
   

   This part of ISO 10426 is applicable to well cement classes A, B, C and D, which are the products obtained by grinding Portland cement clinker and, if needed, calcium sulfate as an interground additive. Processing additives can be used in the manufacture of cement of these classes. Suitable set-modifying agents can be interground or blended during manufacture of class D cement.

   
   

   This part of ISO 10426 is also applicable to well cement classes G and H, which are the products obtained by grinding clinker with no additives other than one or more forms of calcium sulfate, water or chemical additives as required for chromium (VI) reduction.

   
   

2. Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth ISO 13500, Petroleum and natural gas industries — Drilling fluid materials — Specifications and tests ISO 24450, Laboratory glassware — Wide-necked boiling flasks

ASTM C109/C109M, Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)

ASTM C114, Standard Test Methods for Chemical Analysis of Hydraulic Cement

ASTM C115, Standard Test Method for Fineness of Portland Cement by the Turbidimeter

ASTM C183, Standard Practice for Sampling and the Amount of Testing of Hydraulic Cement

ASTM C204, Standard Test Methods for Fineness of Hydraulic Cement by Air-Permeability Apparatus

ASTM C465, Standard Specification for Processing Additions for Use in the Manufacture of Hydraulic Cements

ASTM E11, Standard Specification for Wire Cloth and Sieves for Testing Purposes

ASTM E1404-94(2008), Standard Specification for Laboratory Glass Conical Flasks

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