The study of rheological parameters of oil-water emulsions of highly paraffinic oils depending on the water content

UDK: 665.622.43
Key words: crude oil, water-oil emulsions, viscosity
Authors: N.A. Nebogina, I.V. Prozorova, N.V. Yudina (Institute of Petroleum Chemistry, Siberian Branch of RAS, RF, Tomsk)
Long-term exploitation of oil and water flooding of oil-bearing layers leads to the formation of stable oil-water emulsions. The properties of the formed emulsions depend on a number of factors, namely: the composition of oil and water, from the density and viscosity of oil and other. We have investigated the structural and rheological properties of oil-water emulsions of petroleum oils. Due to the fact that the viscosity of the highly paraffinic crude oils and their emulsions has high values already at positive temperatures, this creates additional problems in the process. It is shown that the increase of water content in the emulsions leads to a significant increase in viscosity compared with the original oil. Resin-asphaltene components and paraffin hydrocarbons also have a significant impact on the rheological properties of crude oils and their emulsions. The studied group composition of the interfacial layer of water-oil emulsions of highly paraffinic oils. It is found that with increase of water content in oil is an increase in the proportion of n-alkanes and asphaltenes in the interfacial layers of oil-water emulsions of highly paraffinic oil.

References

1. Peralta-Martinez M.V., Arriola-Madellin A., Manzanares-Papayanopo -

ulos E., Sanchez-Sanchez R., Palacios-Lozano E.M., Influence of the speed

mixing on viscosity and droplet size of oil in water emulsions, Petroleum Science

and Technology, 2004, V. 22, no.7-8, pp. 1035 – 1043.

2. Pudikov B.V., Eksperimental'nye issledovaniya reologicheskikh svoystv

emul'siy vyazkikh neftey (Experimental studies of the rheological properties of

emulsions of viscous oils), Collected papers “Sbor, podgotovka tyazhelykh i

vysokovyazkikh neftey” (Collection, preparation of heavy and high-viscosity

oils), Ufa: Publ. of VNIISPTneft', 1984, pp. 51 – 59.

3. Dan D., Jing G., Apparent viscosity prediction of non-Newtonian water-incrude

oil emulsions, Journal of Retroleum Science and Engineering, 2006,

V. 53, no. 1-2, pp. 113 – 122.

4. Farah M.A., Oliveria R.C., Caldas R.C., Rajagopal K., Viscosity of water-incrude

oil emulsions: Variation with temperature and water volume fraction,

Journal of petroleum Science and Engineering, 2005, V. 48, no. 3-4,

pp. 169 – 184.

5. Petrov A.A., Pozdnyshev G.N., Borisov S.I., Method of selection of natural

stabilizers of oil emulsions (In Russ.), Neftyanoe khozyaystvo = Oil Industry,

1971, no. 10, pp. 52 – 56.

6. Ratov A.N., Ashmyan K.D., Nemirovskaya G.B., Emel'yanova A.S., Dityat'eva

L.N., Features of structurization in high viscous paraffin oils (In Russ.), KhTTM =

Chemistry and Technology of Fuels and Oils, 1995, no. 1, pp. 22 – 24.

7. Ratov A.N., The mechanisms of structure formation and anomalies of the

rheological properties of high-viscosity oils and bitumens (In Russ.), Rossiyskiy

khimicheskiy zhurnal = Russian Journal of General Chemistry, 1995, V. 39, no. 5,

pp. 106–113.

8. Tumanyan B.P., Nauchnye i prikladnye aspekty teorii neftyanykh dispersnykh

sistem (Scientific and applied aspects of the theory of oil disperse systems),

Moscow: Tekhnika Publ., 2000, 336 p.

Long-term exploitation of oil and water flooding of oil-bearing layers leads to the formation of stable oil-water emulsions. The properties of the formed emulsions depend on a number of factors, namely: the composition of oil and water, from the density and viscosity of oil and other. We have investigated the structural and rheological properties of oil-water emulsions of petroleum oils. Due to the fact that the viscosity of the highly paraffinic crude oils and their emulsions has high values already at positive temperatures, this creates additional problems in the process. It is shown that the increase of water content in the emulsions leads to a significant increase in viscosity compared with the original oil. Resin-asphaltene components and paraffin hydrocarbons also have a significant impact on the rheological properties of crude oils and their emulsions. The studied group composition of the interfacial layer of water-oil emulsions of highly paraffinic oils. It is found that with increase of water content in oil is an increase in the proportion of n-alkanes and asphaltenes in the interfacial layers of oil-water emulsions of highly paraffinic oil.

References

1. Peralta-Martinez M.V., Arriola-Madellin A., Manzanares-Papayanopo -

ulos E., Sanchez-Sanchez R., Palacios-Lozano E.M., Influence of the speed

mixing on viscosity and droplet size of oil in water emulsions, Petroleum Science

and Technology, 2004, V. 22, no.7-8, pp. 1035 – 1043.

2. Pudikov B.V., Eksperimental'nye issledovaniya reologicheskikh svoystv

emul'siy vyazkikh neftey (Experimental studies of the rheological properties of

emulsions of viscous oils), Collected papers “Sbor, podgotovka tyazhelykh i

vysokovyazkikh neftey” (Collection, preparation of heavy and high-viscosity

oils), Ufa: Publ. of VNIISPTneft', 1984, pp. 51 – 59.

3. Dan D., Jing G., Apparent viscosity prediction of non-Newtonian water-incrude

oil emulsions, Journal of Retroleum Science and Engineering, 2006,

V. 53, no. 1-2, pp. 113 – 122.

4. Farah M.A., Oliveria R.C., Caldas R.C., Rajagopal K., Viscosity of water-incrude

oil emulsions: Variation with temperature and water volume fraction,

Journal of petroleum Science and Engineering, 2005, V. 48, no. 3-4,

pp. 169 – 184.

5. Petrov A.A., Pozdnyshev G.N., Borisov S.I., Method of selection of natural

stabilizers of oil emulsions (In Russ.), Neftyanoe khozyaystvo = Oil Industry,

1971, no. 10, pp. 52 – 56.

6. Ratov A.N., Ashmyan K.D., Nemirovskaya G.B., Emel'yanova A.S., Dityat'eva

L.N., Features of structurization in high viscous paraffin oils (In Russ.), KhTTM =

Chemistry and Technology of Fuels and Oils, 1995, no. 1, pp. 22 – 24.

7. Ratov A.N., The mechanisms of structure formation and anomalies of the

rheological properties of high-viscosity oils and bitumens (In Russ.), Rossiyskiy

khimicheskiy zhurnal = Russian Journal of General Chemistry, 1995, V. 39, no. 5,

pp. 106–113.

8. Tumanyan B.P., Nauchnye i prikladnye aspekty teorii neftyanykh dispersnykh

sistem (Scientific and applied aspects of the theory of oil disperse systems),

Moscow: Tekhnika Publ., 2000, 336 p.



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