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Field test of coalescer in the mobile unit for well production treatment

UDK: 622.276.8
DOI: 10.24887/0028-2448-2018-6-136-139
Key words: oil treatment, crude oil, separator, oil settler, mobile treatment unit, coalescer
Authors: I.I. Mazein (LUKOIL-PERM, LLC, RF, Perm), A.V. Usenkov (LUKOIL-PERM, LLC, RF, Perm), A.Yu. Durbazhev (LUKOIL-PERM, LLC, RF, Perm), A.V. Lekomtsev (Perm National Research Polytechnic University, RF, Perm), P.Yu. Ilyushin (Perm National Research Polytechnic University, RF, Perm)

We conducted field tests of coalescers installed in capacitive devices for oil dehydration and desalting of mobile unit for well production treatment. Until now no investigations to determine the optimal gap between the plates intensifying have been conducted. During tests the cassette were mounted in the sump of mobile unit with the distance between the plates of 5 mm (standard design) and 2.5 mm. Investigations carried out in different cases: incoming fluid in the horizontal sump (top and side), the process temperature (60 и 70 °С) and fresh water consumption (increased by 10, 20, 30% compared with the current industrial setting mode). The article shows that the smaller distance between the plates provides a turbulent diffusion in intensifying devices leading to a deeper degree of oil treatment. It is found that desalting processes proceed more intensive at temperature 70 °С than at 60 °C even when the supply of fresh water for 10 and 20%. The increase of fresh water consumption at 30% leads to an appreciable increase in the proportion of water in the drip oil prepared deteriorates desalting process, which affects the results of oil samples after preparation and confirmed weak effect of increasing supply of fresh water for the process. According to the research it was found that the use of intensifying devices the distance between the plates distance of 2.5 mm leads to an improvement of oil treatment degree: decrease of water content by 2–37 % and the content of chloride salts by 5–74 % depending on the process.

References

1. Turbakov M.S., Ryabokon' E.P., Cleaning efficiency upgrade of oil pipeline from wax deposition (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Perm Journal of Petroleum and Mining Engineering, 2015, V. 14, no. 17, pp. 54–62, DOI: 10.15593/2224-9923/2015.17.67.

2. Lekomtsev A.V., Ilyushin P.Yu., Shishkin D.A., Cluster technology of preparation and injection of produced water into the reservoir using a pipe phase divider (In Russ.), Ekspozitsiya Neft' Gaz, 2016, no. 7 (53), pp. 85–88.

3. Galimov R.M., Chumakov G.N., Burtasov S.E., Evaluation of energy efficiency of field well production gathering systems in CDNG no. 7 LLC"LUKOIL-PERM" (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of Perm National Research Polytechnic University. Geology. Oil & Gas Engineering & Mining, 2013, no. 7, pp. 35–46.

4. Khizhnyak G.P., Usenkov A.V., Ust'kachkintsev E.N., Complicating factors in development of the Nozhovskaia group of fields developed by LLC “LUKOIL-PERM” (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of Perm National Research Polytechnic University. Geology. Oil & Gas Engineering & Mining, 2014, V. 13, no. 13, pp. 59–68

5. Tronov V.P., Promyslovaya podgotovka nefti (Field oil treatment), Moscow: Nauka Publ., 1977, 271 p.

6. Ust'kachkintsev E.N., Melekhin S.V., Determination of the efficiency of wax deposition prevention methods (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Perm Journal of Petroleum and Mining Engineering, 2016, V. 15, no. 18, pp. 61–70, DOI: 10.15593/2224-9923/2016.18.7

7. Lutoshkin G.S., Sbor i podgotovka nefti, gaza i vody k transportu (Collection and processing of oil, gas and water), Moscow: Nedra Publ., 1979, 204 p.

8. Pergushev L.P., Rozentsvayg A.K., Influence of heterogeneity of the disperse phase on coalescence and mass transfer in liquid emulsions (In Russ.), Prikladnaya mekhanika i tekhnicheskaya fizika, 1980, no. 4, pp. 74–81.

9. Zlobin A.A., Experimental research of nanoparticle aggregation and self-assembly in oil dispersed systems (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Perm Journal of Petroleum and Mining Engineering, 2015, V. 14, no. 15, pp. 57–72, DOI: 10.15593/2224-9923/2015.15.7.

10. Tret'yakov O.V., Usenkov A.V., Lekomtsev A.V. et al., Results of pilot tests of mobile unit for well production treatment (In Russ.), Neftyanoe khozyaystvo = OilВ  Industry, 2016, no. 12, pp. 131–135.

We conducted field tests of coalescers installed in capacitive devices for oil dehydration and desalting of mobile unit for well production treatment. Until now no investigations to determine the optimal gap between the plates intensifying have been conducted. During tests the cassette were mounted in the sump of mobile unit with the distance between the plates of 5 mm (standard design) and 2.5 mm. Investigations carried out in different cases: incoming fluid in the horizontal sump (top and side), the process temperature (60 и 70 °С) and fresh water consumption (increased by 10, 20, 30% compared with the current industrial setting mode). The article shows that the smaller distance between the plates provides a turbulent diffusion in intensifying devices leading to a deeper degree of oil treatment. It is found that desalting processes proceed more intensive at temperature 70 °С than at 60 °C even when the supply of fresh water for 10 and 20%. The increase of fresh water consumption at 30% leads to an appreciable increase in the proportion of water in the drip oil prepared deteriorates desalting process, which affects the results of oil samples after preparation and confirmed weak effect of increasing supply of fresh water for the process. According to the research it was found that the use of intensifying devices the distance between the plates distance of 2.5 mm leads to an improvement of oil treatment degree: decrease of water content by 2–37 % and the content of chloride salts by 5–74 % depending on the process.

References

1. Turbakov M.S., Ryabokon' E.P., Cleaning efficiency upgrade of oil pipeline from wax deposition (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Perm Journal of Petroleum and Mining Engineering, 2015, V. 14, no. 17, pp. 54–62, DOI: 10.15593/2224-9923/2015.17.67.

2. Lekomtsev A.V., Ilyushin P.Yu., Shishkin D.A., Cluster technology of preparation and injection of produced water into the reservoir using a pipe phase divider (In Russ.), Ekspozitsiya Neft' Gaz, 2016, no. 7 (53), pp. 85–88.

3. Galimov R.M., Chumakov G.N., Burtasov S.E., Evaluation of energy efficiency of field well production gathering systems in CDNG no. 7 LLC"LUKOIL-PERM" (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of Perm National Research Polytechnic University. Geology. Oil & Gas Engineering & Mining, 2013, no. 7, pp. 35–46.

4. Khizhnyak G.P., Usenkov A.V., Ust'kachkintsev E.N., Complicating factors in development of the Nozhovskaia group of fields developed by LLC “LUKOIL-PERM” (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of Perm National Research Polytechnic University. Geology. Oil & Gas Engineering & Mining, 2014, V. 13, no. 13, pp. 59–68

5. Tronov V.P., Promyslovaya podgotovka nefti (Field oil treatment), Moscow: Nauka Publ., 1977, 271 p.

6. Ust'kachkintsev E.N., Melekhin S.V., Determination of the efficiency of wax deposition prevention methods (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Perm Journal of Petroleum and Mining Engineering, 2016, V. 15, no. 18, pp. 61–70, DOI: 10.15593/2224-9923/2016.18.7

7. Lutoshkin G.S., Sbor i podgotovka nefti, gaza i vody k transportu (Collection and processing of oil, gas and water), Moscow: Nedra Publ., 1979, 204 p.

8. Pergushev L.P., Rozentsvayg A.K., Influence of heterogeneity of the disperse phase on coalescence and mass transfer in liquid emulsions (In Russ.), Prikladnaya mekhanika i tekhnicheskaya fizika, 1980, no. 4, pp. 74–81.

9. Zlobin A.A., Experimental research of nanoparticle aggregation and self-assembly in oil dispersed systems (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Perm Journal of Petroleum and Mining Engineering, 2015, V. 14, no. 15, pp. 57–72, DOI: 10.15593/2224-9923/2015.15.7.

10. Tret'yakov O.V., Usenkov A.V., Lekomtsev A.V. et al., Results of pilot tests of mobile unit for well production treatment (In Russ.), Neftyanoe khozyaystvo = OilВ  Industry, 2016, no. 12, pp. 131–135.



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