ISO/TS TECHNICAL SPECIFICATION 3250 First edition 2021-08 Petroleum, petrochemical and natural gas industries Calculation and reporting production efficiency in the operating phase Industries du pétrole, de la peétrochimie et du gaz naturel - Calcul et rapport d'efficacite de la production dans la phase d'exploitation Reference number ISO/TS3250:2021(E) ISO @IS02021 IS0/TS3250:2021(E) COPYRIGHT PROTECTED DOCUMENT @ iS0 2021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0 2021 - All rights reserved