Characterization of water-in-crude oil emulsions by the NMR self-diffusion technique
✍ Scribed by B. Balinov; O. Urdahl; O. Söderman; J. Sjöblom
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 771 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0927-7757
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The stability of water-in-oil emulsions based on some North Sea crude oils has been studied with particular emphasis on the effects of ageing, i.e. exposure of the crude oils to air (and light). It is clearly demonstrated that the interfacial tension of a crude oil towards formation water decreases
## Abstract Self‐diffusion of base oil in six model lubricating greases and in the base oils themselves was measured using pulsed‐field gradient nucleic magnetic resonance (NMR) at 23, 40, 70, and 90°C. Three of the greases were based on naphthenic mineral oils, and three were based on synthetic po