This paper presents the results of a laboratory case study that was initiated to understand the main causes of the crude oil emulsion for an onshore oil field in Japan. The factors investigated on the influence of emulsion stability were oil and brine compositions, content of asphaltene, wax and toluene-insolubles, temperature, shear-stress, and water-cut. The results showed the emulsion was stabilized by multiple factors, indicating that multiple preventative approaches are required to sustain stable production, free of emulsion.

Keywords:
Hydrate Remediation, chemical treatment, asphaltene remediation, scale remediation, Production Chemistry, rock/fluid interaction, asphaltene inhibition, paraffin remediation, wax inhibition, hydrate inhibition
Subjects:
Production Chemistry, Metallurgy and Biology, Inhibition and remediation of hydrates, scale, paraffin / wax and asphaltene, Downhole chemical treatments and fluid compatibility
Copyright 2018, Society of Petroleum Engineers
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