Ultrasound-assisted dewatering of crude oil from Kumkol oilfield

Keywords: crude oil, water-oil emulsion, demulsification, ultrasonic treatment, demulsification rato


Reducing the water content of crude oil is a necessary step in preparing oil for transportation and processing. This task is complicated by the presence of stable water-in-oil emulsions. The most widely used approach to oil demulsification is exploring chemical demulsifiers. However, the high cost and impossibility of regenerating the latter require the search for new ways to destroy water-oil emulsions. One of the promising areas is the use of ultrasound. This paper presents the results of studies on the ultrasonic treatment of four samples of emulsions with different water content (8.74; 15; 25 and 30 vol.%) based on oil from the Kumkol oilfield (Kazakhstan). Samples of emulsions were subjected to ultrasonic action at a frequency of 40 kHz for 5-60 min at a temperature of 70±1°C, followed by settling for 40 min at the indicated temperature. The influence of the initial water content in the emulsion, the acoustic intensity, as well as the duration of ultrasonic treatment on the dewatering ratio was investigated. It was found that the residual water content in the oil was 5.04- 7.82 vol.%. Ultrasonic treatment of crude oil from the Kumkol oilfield can be used for preliminary dewatering, to subsequently reduce the consumption of chemical demulsifiers.


1 Umar A A., Saaid I B M., Sulaimon A A, Pilus R B M (2018) J Petrol Sci Eng 165:673-690. Crossref

2 Czarnecki J, Tchoukov P, Dabros T (2012) Energ Fuel 26(9):5782-5786. Crossref

3 Ahmed N S., Nassar A M, Zaki N N, Gharieb H K (1999) Fuel 78(5):593-600. Crossref

4 Czarnecki J (2009) Energ Fuel 23 (3):1253-1257. Crossref

5 Razi M, Rahimpour M R, Jahanmiri A, Azad F (2011) J Chem Eng Data 56(6):2936-2945. Crossref

6 Nikkhah M, Tohidian T, Rahimpour M R, Jahanmiri A (2015) Chem Eng Res Des 94:164-172. Crossref

7 Otarbaev N S, Kapustin V M, Nadirov K S, Bimbetova G Z, Zhantasov M K, Nadirov R K (2019) Indones J Chem 19(4):959-966. Crossref

8 Balsamo M, Erto A, Lancia A (2017) Braz J Chem Eng 34(1):273-282. Crossref

9 Pradilla D, Ramírez J, Zanetti F, Álvarez O (2017) Energ Fuel 31(10):10369-10377. Crossref

10 Azizi K, Nikazar M (2015) Pet Sci Technol 33(1):8-14. Crossref

11 Xu X, Cao D, Liu J, Gao J, Wang X (2019) Ultrason Sonochem 57:185-192. Crossref

12 Antes F G., Diehl L O, Pereira J S, Guimarães R C , Guarnieri R A, Ferreira B M, Flores E M (2015) Ultrason Sonochem 25:70-75. Crossref

13 Khajehesamedini A, Sadatshojaie A, Parvasi P, Rahimpour M R, Naserimojarad M M (2018) Ultrason Sonochem 48: 383-395. Crossref

14 Guoxiang Y, Xiaoping L Ü, Fei P, Pingfang H, Xuan S H E N (2008) Chin J Chem Eng 16(4):564-569. Crossref

15 Ye G, Lu X, Han P, Shen X (2010) J Petrol Sci Eng 70(1,2):140-144. Crossref

16 Yang X G, Tan W, Tan X F (2009) Pet Sci Technol 27(17):2010-2020. Crossref

17 Antes F G., Diehl L O, Pereira J S, Guimarães R C, Guarnieri R A, Ferreira B M, Flores E M (2017) Ultrason Sonochem 35:541-546. Crossref

18 Luo X, Gong H, Cao J, Yin H, Yan Y, He L (2019) Chem Eng Sci 203:285-292. Crossref
How to Cite
Nadirova, Z., Ivakhnenko, O., Zhantasov, M., Bimbetova, G., & Nadirov, K. (2021). Ultrasound-assisted dewatering of crude oil from Kumkol oilfield. Chemical Bulletin of Kazakh National University, 101(2), 4-10. https://doi.org/https://doi.org/10.15328/cb1217