A high pressure, high velocity recirculating flow loop has recently been developed for studying oilfield corrosion and corrosion inhibitors under flowing conditions. The flow loop is equipped with various high performance process monitoring and regulating devices. An in-house developed software was used in a microcomputer to achieve flow loop control and data acquisition. Preliminary studies were conducted to address issues related to oilfield corrosion. A quantitative method was developed to study partitioning of corrosion inhibitors between oil and brine phases. Results suggest that flow has a slight effect on inhibitor partitioning. This study also shows that the corrosion rate increases proportionally with fluid velocity up to 40 ft/sec (12.2 m/sec). Despite the severe flow conditions in the loop, a significant amount of corrosion products, as high as 40%, remains on the coupon surface. In conjunction with the flow loop, a new method was developed for evaluating corrosion inhibitors for tubing displacement applications. The results are consistent with other film persistency studies.

Subject
Inhibitor performance, Flow loop, Corrosion rate, Steel coupons, Flow velocity, Partitioning, Chemical inhibition, Fluids, Corrosion inhibitors, Brines, Corrosion protection, Corrosion coupons, Oil
Keywords:
flow loop, CO2 corrosion, velocity, oilfield, corrosion inhibitors
© 1993 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1993
Association for Materials Protection and Performance (AMPP)
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