Exploration • Drilling • Field Services
via hetero-droplet interaction and can help to explain why some demulsifiers act immediately to cause rapid coalescence of water droplets.
● Good demulsifiers adsorb to the interface as the interfacial film is stretched. Strong partitioning and mobility to the interface are important characteristics, and the demulsifier causes the film to rupture and the water droplets to coagulate.
● Solids wetting characteristics are preferentially changed by effective demulsifiers to either totally- oil-wet or totally-water-wet, thus encouraging solids off the interface and into one discreet phase. It is generally more desirable to move solids to the water phase.
It is hardly surprising that any given demulsifier formulation is highly specific to an individual field or process system because they are sensitive to crude oil type, pH, salt content and temperature. Clariant Oil Services has a recognised, proven
track record in the development of total treatment solutions to complex separation challenges. Demulsifier-based chemistries and the development of formulated products are key to competency within the organisation. Over the past five years alone, our research and development into demulsifier chemistries has continued with the introduction of many new and environmentally acceptable bases
SCUD FWKO Skimmed Oil Water Tank
Recycle Tanks
offering a range of different advantages. Tese new chemistries are developed and synthesised in-house at our research and development location in an integrated part of our manufacturing plant. Looking for new and innovative chemistries
and variation developments is a continual improvement process. Once demulsifier bases have been established and approved for field trial, they are screened in a variety of locations in order to identify the best performing chemicals within a series or family, which leads to the final scale up and commercialisation of the top performing blended formulations as final products. Research testing is frequently performed with a mix of produced fluids in order to identify new chemistries for the more challenging environments,
Fig. 1. Process plant schematic.
Produced
Treater 1 Treater 2 Treater 3 Treater 4
Sales Tank
Off Spec Oil
unconventional wisdom
SPE Annual Technical Conference and Exhibition » 8–10 October 2012 Henry B. Gonzalez Convention Center
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Register Now
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IntO&GE_12ATCE_Venue_HH_0612 Circle 35 or ✔ at
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