The production of hydrogen sulfide within oilfield systems can result in severe operational and health and safety issues. Hydrogen sulfide can be produced by both abiotic (chemical) or biotic (microbiological) mechanisms. Biotically produced hydrogen sulfide is caused by the proliferation of sulfate reducing bacteria (SRB) and successful treatment programmes need to target both the causative organism and remove or mitigate the secondary effects of SRB activity, i.e. iron sulfide deposition and particulate stabilised emulsions.

This paper will describe the use of THPS and, in particular, new generation THPS formulations, as a holistic approach for treating sour systems by controlling SRB, dissolving iron sulfide deposits and removing particulate iron sulfide from produced fluids to facilitate demulsification processes.

Subject
Water, Emulsions, Iron sulfides, Solids, Reservoirs, Biofilms, Particulates, Nitrates, Glutaraldehyde, Scale formation, THPS, Deposit corrosion, Oil
Keywords:
THPS, Tetrakishydroxymethyl phosphonium sulfate, SRB, sulfate reducing bacteria, reservoir souring, microbially influenced corrosion, sessile, planktonic, biofilm, iron sulfide
© 2008 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).
2008
Association for Materials Protection and Performance (AMPP)
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