1、November 2008DEUTSCHE NORM Normenausschuss Erdl- und Erdgasgewinnung (NG) im DINPreisgruppe 10DIN Deutsches Institut fr Normung e.V. Jede Art der Vervielfltigung, auch auszugsweise, nur mit Genehmigung des DIN Deutsches Institut fr Normung e.V., Berlin, gestattet.ICS 75.180.10; 91.100.10!$QL“1469241
2、www.din.deDDIN EN ISO 10426-6Erdl- und Erdgasindustrie Zemente und Materialien fr die Zementation von Tiefbohrungen Teil 6: Verfahren zur Bestimmung der statischen Gelfestigkeit vonZementzusammensetzungen (ISO 10426-6:2008);Englische Fassung EN ISO 10426-6:2008Petroleum and natural gas industries Ce
3、ments and materials for well cementing Part 6: Methods for determining the static gel strength of cement formulations(ISO 10426-6:2008);English version EN ISO 10426-6:2008Industries du ptrole et du gas naturel Ciments et matriaux pour la cimentation des puits Partie 6: Mthodes de dtermination de la
4、force statique du gel des formulations deciment (ISO 10426-6:2008);Version anglaise EN ISO 10426-6:2008Alleinverkauf der Normen durch Beuth Verlag GmbH, 10772 Berlinwww.beuth.deGesamtumfang 15 SeitenB55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 DIN EN ISO 10426-6:2008-11 2 Nat
5、ionales Vorwort Dieses Dokument (EN ISO 10426-6:2008) wurde vom Technischen Komitee CEN/TC 12 Materialien, Aus-rstungen und Offshore-Bauwerke fr die Erdl-, petrochemische und Erdgasindustrie“ erarbeitet, dessen Sekretariat von AFNOR (Frankreich) gehalten wird. Es handelt sich dabei um die unverndert
6、e bernahme von ISO 10426-6:2008, erarbeitet von ISO/TC 67 Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries“, Subkomitee SC 3 Drilling and completion fluids, and well cements“. Fr Deutschland hat hieran der Arbeitskreis NG 12/67 AK 3 Bohrsplung und
7、Zemente“ im Normen-ausschuss Erdl- und Erdgasgewinnung (NG) mitgearbeitet. Diese Europische Norm enthlt unter Bercksichtigung des DIN-Prsidialbeschlusses 1/2004 nur die englische Originalfassung der ISO-Norm. Diese Norm enthlt neben den gesetzlichen Einheiten auch die Einheiten F“, ft“, inch“, lbf“,
8、 psi“, r/s“ und r/min“, die im Deutschen Normenwerk nicht zugelassen sind. Es wird jedoch ausdrcklich darauf hingewiesen, dass die Anwendung dieser Einheiten im nationalen amtlichen und geschftlichen Verkehr aufgrund des Gesetzes ber Einheiten im Messwesen nicht zulssig ist. Umrechnung: n F = (9/5)n
9、 + 32 C 1 ft = 0,304 8 m 1 inch = 25,4 mm 1 lbf = 4,448 222 N 1 psi = 6,894 757 kPa 1 r/s = 1 s11 r/min = 1 U/min1B55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 10426-6July 2008ICS 91.100.10; 75.020English VersionPetroleum a
10、nd natural gas industries - Cements and materialsfor well cementing - Part 6: Methods for determining the staticgel strength of cement formulations (ISO 10426-6:2008)Industries du ptrole et du gas naturel - Ciments etmatriaux pour la cimentation des puits - Partie 6:Mthodes de dtermination de la for
11、ce statique du gel desformulations de ciment (ISO 10426-6:2008)Erdl- und Erdgasindustrie - Zemente und Materialien frdie Zementation von Tiefbohrungen - Teil 6: Verfahren zurBestimmung der statischen Gelfestigkeit vonZementzusammensetzungen (ISO 10426-6:2008)This European Standard was approved by CE
12、N on 21 June 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may
13、be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN M
14、anagement Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, No
15、rway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form a
16、nd by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 10426-6:2008: E1B55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 Contents Page12345678EN 10426-6:2008 (E)2Introduction 4 Scope 5 Normative references 5 Terms and definitions .5 Test method using rotating-t
17、ype static gel strength apparatus .7 Test method using ultrasonic-type static gel strength apparatus .8 Test method using intermittent rotation-type static gel strength apparatus 10 Foreword. 3 Annex A (informative) Critical static gel strength Additional information12 Bibliography 13 Sampling.6 Pre
18、paration .6 DIN EN ISO 10426-6:2008-11B55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 ForewordThis document (EN ISO 10426-6:2008) has been prepared by Technical Committee ISO/TC 67 “Materials,equipment and offshore structures for petroleum and natural gas industries“ in collabor
19、ation withTechnicalCommittee CEN/TC 12 “Materials, equipment and offshore structures for petroleum, petrochemical andnatural 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 identicaltext or
20、 by endorsement, at the latest by January 2009, and conflicting national standards shall be withdrawn atthe latest by January 2009.Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible for
21、 identifying any or all such patent rights.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, CzechRepublic, Denmark, Estonia, Finland, France, Germany, G
22、reece, Hungary, Iceland, Ireland, Italy, Latvia,Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,Sweden, Switzerland and the United Kingdom.Endorsement noticeThe text of ISO 10426-6:2008 has been approved by CEN as a EN ISO 10426-6:2008 without
23、anymodification.EN 10426-6:2008 (E)3DIN EN ISO 10426-6:2008-11B55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 Introduction Characterizing the static gel-strength (SGS) development of a cement slurry is an important design parameter in specific cementing environments. These inclu
24、de shallow-water flow mitigation, plugging operations and certain annular flow circumstances. Determining the gel-strength characteristics of a cement slurry allows the user to ascertain if the cement design is fit for a particular intended purpose. Historically, the SGS of a cement slurry was deter
25、mined by a method using a couette-type rotational viscometer. More recently, specialized instruments, including a rotating-type apparatus, an intermittent rotation-type apparatus and an ultrasonic-type apparatus, have been used to measure the gel-strength development of a static cement slurry. This
26、part of ISO 10426 provides the testing protocol for determining SGS using these three types of instruments. It is necessary to note due that, due to differences in sample size, apparatus configuration and method of SGS determination, there can be considerable variance in results obtained by the thre
27、e types of instruments described in this part of ISO 10426.CAUTION Caution is necessary when using static gel-strength development testing results as the single or predominant engineering parameter of a cement slurry design or technical evaluation. In this part of ISO 10426, where practical, U.S. Cu
28、stomary (USC) units are included in brackets for information. The units do not necessarily represent a direct conversion of SI to USC, or USC to SI, units. Consideration has been given to the precision of the instrument making the measurement. For example, thermometers are typically marked in one de
29、gree increments, thus temperature values have been rounded to the nearest degree. In this part of ISO 10426, calibrating an instrument refers to ensuring the accuracy of the measurement. Accuracy is the degree of conformity of a quantity to its actual or true value. Accuracy is related to precision,
30、 or reproducibility of a measurement. Precision is the degree to which further measurements or calculations 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
31、, precise but not accurate, neither or both. A result is valid if it is both accurate and precise. Annex A of this part of ISO 10426 is for information only. EN 10426-6:2008 (E)4DIN EN ISO 10426-6:2008-11B55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 1 Scope This part of ISO 10
32、426 specifies requirements and provides test methods for the determination of static gel strength (SGS) of cement slurries and related materials under simulated well conditions. 2 Normative references The following referenced documents are indispensable for the application of this document. For date
33、d references, only the edition cited applies. For undated references, the latest edition of the referenced standard (including any amendments) applies. ISO 10426-2:2003, Petroleum and natural gas industries Cements and materials for well cementing Part 2: Testing of well cements3 Terms and definitio
34、ns For the purposes of this part of ISO 10426, the following terms and definitions apply. 3.1bottom-hole pressure BHPhydrostatic pressure at the bottom of the well calculated from the true vertical depth and the fluid densities in the wellbore 3.2bottom-hole circulating temperature BHCT maximum temp
35、erature encountered in a wellbore during cement slurry placement 3.3critical static gel-strength period CSGSP time interval required for the cement to progress from the critical static gel strength value to a static gel strength of 250 Pa (500 lbf/100 ft2)EN 10426-6:2008 (E)5DIN EN ISO 10426-6:2008-
36、11B55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 3.4critical static gel strength CSGSspecific static gel strength of a cement in which hydrostatic-pressure equilibrium is reached between the decayed hydrostatic pressure transmission of the cement column (and other fluids in the
37、 annulus) and the pore pressure of the formation See Annex A. NOTE The critical static gel strength is measured in pascals or newtons per square metre (pounds force per 100 square feet). 3.5static gel strength SGS shear strength (stress) measurement derived from the pressure required to move a gelle
38、d fluid through a pipe or annulus of known length and geometry NOTE The static gel strength is measured in pascals or newtons per square metre (pounds force per 100 square feet).4 Sampling 4.1 General Samples of the dry cement or cement blend, solid and liquid additives and mixing water are required
39、 to test a slurry in accordance with this part of ISO 10426. Accordingly, the best available sampling technology should be employed to ensure the laboratory test conditions and materials match as closely as possible those found at the well site. 4.2 Method Applicable sampling techniques for the dry
40、cement or cement blend, solid and liquid additives and mixing water used in typical cementing operations can be found in ISO 10426-2:2003, Clause 4. If required, the temperature of the mix water, cement or cement blends, and liquid additives may be measured with a thermocouple or thermometer capable
41、 of measuring temperature with an accuracy of r 2 C (r 3 F). These temperatures should be recorded. Temperature-measuring devices shall be calibrated (in the case of a thermocouple) no less frequently than every three months or checked (in the case of a thermometer) annually. NOTE Descriptions of co
42、mmonly used sampling devices can be found in ISO 10426-2:2003, Figure 1.5 Preparation Prepare the test samples in accordance with ISO 10426-2:2003, Clause 5. The laboratory temperature of the cement sample and mix water should be within r 2 C (r 3 F) of the respective temperature anticipated at the
43、well site. If field conditions are unknown, the temperature of the mix water and dry cement shall be 23 C r 2 C (73 F r 3 F) immediately prior to mixing. If larger slurry volumes are needed, an alternative method for slurry preparation is found in ISO 10426-2:2003, Clause A.1. NOTE The density of th
44、e cement slurry can be verified by methods found in ISO 10426-2:2003, Clause 6. EN 10426-6:2008 (E)6DIN EN ISO 10426-6:2008-11B55EB1B3E14C22109E918E8EA43EDB30F09CC7B7EF8DD9NormCD - Stand 2009-03 6 Test method using rotating-type static gel strength apparatus 6.1 Apparatus The apparatus contains a pr
45、essure chamber that can be heated and pressurized according to a simulated cement job schedule. The SGS is calculated from the torque required to rotate a paddle of known geometry at very low speed. The rotation speed of the paddle during the SGS stirring portion of the test is normally a continuous 0,000 009 2 r/s (0,2/min). The initial stirring to simulate placement in the well is typically conducted at 2,5 r/s r 0,25 r/s (
