A Compelling Case for Non-Triazine H2S Mitigation Chemistries: Development and Field Validation of A Novel, Cost Effective and Highly Successful Non Triazine Based H2S Scavenger

Since the 1980s, the removal of H2S from produced fluids and gas has been dominated by a single product; namely MEA triazine or 2-hydroxyethyl triazinane. This H2S scavenger has shown itself to be very effective, cheap and extremely versatile, being used successfully in both aqueous and hydrocarbon environments. More recently the shortcomings of this chemical have come into sharp focus and huge efforts are being placed into finding an alternative which has all the outstanding attributes of triazine but none or few of the shortcomings. There are substantial challenges in this arena and replacing such a well-established incumbent is by no means a trivial matter. This very timely paper will present an overview of the H2S removal landscape and highlight all the reasons for needing to replace such a ubiquitous product. A highly successful, cost effective and minimally damaging, highly versatile water based H2S scavenger has been developed. It has been employed in multiple application types, including water phase, oil phase only, mixed phase, direct gas injection and downhole. Further presented are a) validating lab data for this novel non triazine scavenger together with b) field on site test evaluations and c) three case histories / success stories of a new non triazine based H2S scavenger in a direct injection and multiple application scenario. The paper will further critically review the claims made across the whole landscape of non-triazine chemistries, both claims made and the field experience.