The paper presents a technology for the quantitative analysis of water-oil emulsions using low-frequency pulsed NMR relaxometry, which allows for online monitoring of water content and the SARA group composition of oil. This technology can be applied in hydrocarbon production to determine the effectiveness of enhanced oil recovery methods at a specific well and/or field by controlling water content in real-time to determine the quantity and rate of demulsifier addition in separation units and facilities for desalting and dehydrating emulsified oil. Additionally, it can be used to enhance the efficiency of crude oil processing at petrochemical plants.

The study presents the results of examining samples of artificial water-oil emulsions of heavy oil with water content ranging from 10% to 50% by mass. It is shown that the method can determine water content up to 40% with an uncertainty not exceeding 15%, without affecting the quality of the oil's group composition determination.

Keywords:
unconventional play, chemical treatment, drilling fluid management & disposal, geologist, real time system, fraction, drilling fluids and materials, group composition, petroleum play type, separation and treating
Subjects:
Drilling Fluids and Materials, Production Chemistry, Metallurgy and Biology, Processing Systems and Design, Drilling fluid management & disposal, Downhole chemical treatments and fluid compatibility, Separation and treating
Copyright 2024, Society of Petroleum Engineers DOI 10.2118/223432-MS
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