Published April 2021, Pg. 17-22

Section: Oil and gas field development and exploitation

UOT: 622.276; 622.279

DOI: 10.37474/0365-8554/2021-4-17-22

Studying the impact of carbon dioxide on phase transitions of gas-condensate systems and dispersion of retrograde condensate

N.N. Hamidov Cand. in Tech. Sc. - “Oil-Gas Scientific Research Project” Institute

The paper studies the effect of carbon dioxide on the phase transitions within gas-condensate systems and defines its role on the evaporation of retrograde condensate isolated in formation due to the decreasing pressure during development process. Based on the experiments carried out by special methodology in рVT bomb, the essence of various impact of carbon dioxide amount in the content of gas-condensate mixture on the physico-chemical and thermo-dynamic parameters of the system depending on the temperature interval revealed.

As a result of experiments, it was defined that the increase of carbon dioxide within gas-condensate mixture raises the content of dispersed condensate in gas phase. Moreover, the increase of CO2 in gas phase leads to the growth of gas amount dissolved in a unit volume of condensate as well.

It is shown that the effect of carbon dioxide on the pressure of retrograde condensation within gas-condensate system cannot be definitely estimated. The pressure of retrograde condensation within such mixtures may be different in various temperature diapasons due to the change of the features and critical parameters of the system.

References:

1. Gritsenko A.I., Ostrovskaya T.D., Yushkin V.V. Uglevodorodnye kondensaty mestorozhdeniy prirodnogo gaza. – M.: Nedra, 1983, 263 s.

2. Hamidov N.N., Fataliyev V.M. Laya chokmush kondensatyn tebii gazla bukharlanmasina galig suyun tesirinin experimental tedgigi // Azerbaijan neft teserrufaty, 2016, No 10, s. 23-27.

3. Meng X., Sheng J. Experimental and numerical study of huff-n-puff gas injection to re-vaporize liquid dropout in shale gas condensate reservoirs // Journal of Natural Gas Science and Engineering, 2016, v. 35, part A, pp. 444-454.

4. Balint V., Ban A., Doleshal Sh., Zabrodin P.I., Terek Ya. Primenenie uglekislogo gaza v dobyche nefti. – M.: Nedra, 1977, 240 s.

5. Gamidov N.N. Issledovanie isparyaemosti kondensata v prisutstvii uglevodorodnykh i neuglevodorodnykh gazov: dis. kand. tekhn. nauk, Baku, 1999, 122 s.

6. Ostrovskaya T.D., Gritsenko I.A. Issledovanie gazokondensatnykh smesey, soderzhashchikh CO2 i N2 // Gazovaya promyshlennost’, 1983, No 8, s. 31-32.

7. Gamidov N.N., Fataliyev V.M. Vliyanie kriticheskikh svoistv gazov na protsess ispareniya plastovykh uglevodorodnykh kondensatov. Materialy XI Mezhdunarodnoy nauhchno-prakticheskoy neftegazovoy konferentsii. Kislovodsk, 27-31 oktyabrya, 2014, s. 45-46.

8. Abasov M.T., Abbasov Z.Ya., Abasov Sh.D., Gamidov N.N. Vliyanie neuglevodorodnykh komponentov na davlenie nachala kondensatsii prirodnykh sistem // Gazovaya promyshlennost’, 2000, No 1, s. 17-19.

9. Abasov M.T., Abbasov Z.Ya., Fataliyev V.M., Gamidov N.N., Mamedova G.G. Prikladnye voprosy termodinamiki pri dobyche nefti i gaza. – Baku: Nafta-Press, 2013, 212 s.

10. Kats D.L. i dr. Rukovodstvo po dobyche, transportu i pererabotke prirododnogo gaza. – M.: Nedra, 1965, 765 s.