All too often mineral scale formation is viewed purely in terms of supersaturation. More recently, studies of barium sulfate scale inhibition in acidic reservoir brines have identified pH as a factor which does not significantly affect supersaturation but, nonetheless, incapacitates many scale inhibitors. This paper explores significant perturbation of an oilfield barium sulfate inhibited scale system by various divalent cations and anions. The chemistry which affects inhibitor-crystal interaction is presented as the principle influence upon inhibitor function.

Subject
Inhibitor performance, Strontium, Barium sulfate, Saturation, Sulfates, Scale inhibitors, Calcium, Molar ratio, Ion concentrations, Corrosion inhibitors, Brines, Magnesium, Scaling
Keywords:
barium sulfate, scale inhibitors, molar ratio, saturation and divalent ions
© 1992 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).
1992
Association for Materials Protection and Performance (AMPP)
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