1、 Standard Practice Worksheet for the Selection of Oilfield Nonmetallic Seal Systems This NACE International standard represents a consensus of those individual members who have reviewed this document, its scope, and provisions. Its acceptance does not in any respect preclude anyone, whether he or sh
2、e has adopted the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not in conformance with this standard. Nothing contained in this NACE standard is to be construed as granting any right, by implication or otherwise, to manufacture, sell, or use
3、 in connection with any method, apparatus, or product covered by letters patent, or as indemnifying or protecting anyone against liability for infringement of letters patent. This standard represents minimum requirements and should in no way be interpreted as a restriction on the use of better proce
4、dures or materials. Neither is this standard intended to apply in all cases relating to the subject. Unpredictable circumstances may negate the usefulness of this standard in specific instances. NACE assumes no responsibility for the interpretation or use of this standard by other parties and accept
5、s responsibility for only those official NACE interpretations issued by NACE in accordance with its governing procedures and policies which preclude the issuance of interpretations by individual volunteers. Users of this NACE standard are responsible for reviewing appropriate health, safety, environ
6、mental, and regulatory documents and for determining their applicability in relation to this standard prior to its use. This NACE standard may not necessarily address all potential health and safety problems or environmental hazards associated with the use of materials, equipment, and/or operations
7、detailed or referred to within this standard. Users of this NACE standard are also responsible for establishing appropriate health, safety, and environmental protection practices, in consultation with appropriate regulatory authorities if necessary, to achieve compliance with any existing applicable
8、 regulatory requirements prior to the use of this standard. CAUTIONARY NOTICE: NACE standards are subject to periodic review, and may be revised or withdrawn at any time in accordance with NACE technical committee procedures. NACE requires that action be taken to reaffirm, revise, or withdraw this s
9、tandard no later than five years from the date of initial publication and subsequently from the date of each reaffirmation or revision. The user is cautioned to obtain the latest edition. Purchasers of NACE standards may receive current information on all standards and other NACE publications by con
10、tacting the NACE FirstService Department, 1440 South Creek Dr., Houston, TX 77084-4906 (telephone +1 281-228-6200).Reaffirmed 2012-05-10 Revised 2003-03-18 Revised 1996-09-23 Approved August 1991 NACE International 1440 South Creek Dr. Houston, Texas 77084-4906 +1 281-228-6200 ISBN 1-5790-169-2 2012
11、, NACE International NACE SP0491-2012 (formerly RP0491) Item No. 21051 SP0491-2012 NACE International i ._ Foreword This worksheet was developed by members of NACE with the intent of aiding both the manufacturer and end user of nonmetallic seal systems. It was designed to guide the end user in provi
12、ding in-service environmental conditions to the manufacturer so that the best available materials can be used for these conditions. The selection of the proper nonmetallic seal materials must start with an agreement between the user and the vendor determining exactly what is expected of the equipmen
13、t to be purchased. Chemical, thermal, and pressure conditions that exist in the environment must be outlined as completely as possible and discussed before this agreement is reached. This standard is intended to aid and formalize this outlining procedure. With the availability of this standard, thos
14、e involved in the selection of nonmetallic seal materials for oilfield applications can consider seal material options intelligently. This standard was originally prepared in 1991 by NACE Task Group T-1G-17, a component of Unit Committee T-1G, “Protective Coatings, Elastomers, and Other Nonmetallic
15、Materials for Oilfield Use.” It was reaffirmed in 1996 by T-1G and reaffirmed in 2003 and 2012 by Specific Technology Group (STG) 33, “Oil and Gas ProductionNonmetallics and Wear Coatings (Metallic).” This standard is published by NACE International under the auspices of STG 33. In NACE standards, t
16、he terms shall, must, should, and may are used in accordance with the definitions of these terms in the NACE Publications Style Manual. The terms shall and must are used to state a requirement, and are considered mandatory. The term should is used to state something good and is recommended, but is n
17、ot considered mandatory. The term may is used to state something considered optional. _ . SP0491-2012 ii NACE International _ NACE International Standard Practice Worksheet for the Selection of Oilfield Nonmetallic Seal Systems Contents 1. General 1 2. Worksheet 1 Appendix A: Service Environment Wor
18、ksheet for the Selection of Oilfield Nonmetallic Seal Systems . 2 _ SP0491-2012 NACE International 1 _ Section 1: General 1.1 For proper analysis of the seal systems required, this standard contains a worksheet that shall be completed prior to equipment selection. 1.2 The worksheet shall be complete
19、d with as much of the information as is available. 1.3 If any of the components listed in the section on “Media” are known not to be involved in this application, the component shall be listed as “not applicable” (“N/A”). 1.4 The information requested under the heading “Operating Conditions” is crit
20、ical for the proper selection of sealing systems. 1.5 If any of the types of chemical exposures shown in the section on “Chemicals and Materials to Be Encountered” will not be encountered in a specific application, that type shall be marked “No.” 1.6 If a certain type of seal is known to be desirabl
21、e for the application, then it shall be indicated under “Additional Remarks.” 1.7 Other chemical exposures or unusual conditions present for the application shall be listed under “Additional Remarks.” _ Section 2: Worksheet 2.1 The worksheet is attached to this standard as Appendix A (mandatory). It
22、 may be reproduced as needed. NOTE: NACE standards are updated at required intervals. It is the responsibility of this standards users to ensure that the most current edition is being used. SP0491-2012 2 NACE International _ Appendix A: Service Environment Worksheet for the Selection of Oilfield Non
23、metallic Seal Systems(1) (Mandatory) Please state units of measure: GENERAL TYPE OF SERVICE: Production _ _Gas/Oil Ratio (GOR) _ Injection _ TYPE OF EQUIPMENT _ How long will the equipment be exposed to the environment? _ MEDIA: H2S mol%, CO2 mol%, N2 mol% CH4 mol%, Steam , H2O , Oil Other OPERATING
24、 CONDITIONS: Temperature: Bottom hole: Max. flowing: Pressure: Max. working pressure (WP) Flowing: Differential: Blowdown rate: Shut-in: CHEMICALS AND MATERIALS TO BE ENCOUNTERED (Yes/No): Production corrosion inhibitor Manufacturer, brand name, and product number _ Method of treatment Concentration
25、 Carrier system: Water _Hydrocarbon _ (1) This worksheet was developed by members of NACE with the intent of aiding both the manufacturer and end user of nonmetallic seal systems. It was designed to guide the end user in providing in-service environmental conditions to the manufacturer so that the b
26、est available materials can be used for these conditions. SP0491-2012 NACE International 3 Annular corrosion inhibitor Manufacturer, brand name, and product number_ _ _ Method of treatment_ Concentration _ Carrier system: Water _Hydrocarbon _ Biocides Manufacturer, brand name, and product number _ C
27、oncentration _ Scale inhibitor Manufacturer, brand name, and product number _ Method of treatment _ Concentration _ Paraffin/asphaltene inhibitor Manufacturer, brand name, and product number _ _ _ Method of treatment _ Concentration _ Oxygen scavenger Manufacturer, brand name, and product number _ M
28、ethod of treatment _ Concentration _ Weighted fluids Acidic Basic _ Chemical composition _ Concentration _ Solvents/solvent systems Chemical name_ Manufacturer, brand name, and product number_ Chemical composition _ Concentration _ Method of treatment _ SP0491-2012 4 NACE International Well stimulation Type fluid Duration _ Concentration _Frequency _ Method of treatment _ Additional remarks _ _ TECHNICAL CONTACT IN BUYERS ORGANIZATION:_ _ Phone:_ E-mail: _ ISBN 1-5790-169-2
