Next-Generation SICIs: Versatile Solutions for Oil and Gas Field Chemical Applications

Abstract There is a growing need for multifunctional combination products not only to maintain integrity of operator assets in increasingly complex and harsher field conditions, but also to reduce chemical footprint and address a variety of application and logistical requirements while providing a cost-effective solution. Example of such requirements include addressing limited subsea umbilical or injection line, vacuum stability and / or gas lift applicability, suitability for capillary string application, neat product stability over wide range of temperature etc. However, most of the SICI (scale and corrosion inhibitor) formulations often lead to poor stability and performance issues due to the inherent chemical properties of the active components. Commercially available SICI products are limited to specific scale inhibitors combined with selected corrosion inhibitor chemistries only. The current work developed a wider selection of SICI products with greater application ranges. The new products have shown superior corrosion performance both in terms of general and localized corrosion under a varying degree of field conditions. The paper describes in detail the development test work carried out for formulation stability, corrosion, and scale performance under different conditions and details some of the key benefits over 1st generation SICI technology.