To increase the efficiency of development of gas condensate fields with significant reserves of retrograde condensate, a study was made of the effectiveness of the technology for maintaining formation pressure using dry gas based on a heterogeneous three-dimensional digital model. According to the simulation results, it was found that in the case of dry gas injection into a gas condensate reservoir, the specific losses of condensate in the reservoir are reduced due to stabilization and maintenance of formation pressure at a higher level compared to depletion development. The simulation results indicate that due to the introduction of formation pressure maintenance technology, the saturation of the pore space with precipitated condensate decreases and accordingly its additional production isprovided mainly in the gas phase to the surface. With an increase in the degree of compensation for the current hydrocarbon production by dry gas injection, the cumulative condensate production and accordingly the final hydrocarbon coefficient increase. According to the results of the calculations, the increase in condensate recovery factors, depending on the degree of compensation for the current hydrocarbon production by dry gas injection, is: 0.5 - 3.57 %; 0.75 - 5.01 %; 1 - 6.08 %; 1.25 - 6.93 %; 1.5 - 7.70 %. Based on the results of a statistical analysis of the calculated data, the optimal value of the degree of compensation for the current hydrocarbon production by dry gas injection was determined, which is 0.972. The increase in the final condensate recovery factor for the optimal reduced degree of compensation for the current hydrocarbon production by dry gas injection is 5.96 %. The results of the studies carried out testify to the high technological efficiency of the introduction of formation pressure maintenance technologies for the development of gas condensate fields with significant condensate reserves
Received 15.06.2022
Revised 12.10.2022
Accepted 28.11.2022
[1] Kudrya S.A. Stan ta perspektyvy rozvytku vidnovlyuvanoyi enerhetyky v Ukraini. Visn. NAN Ukrayiny, 2015, No 12. P.19-26. [in Ukrainian]
[2] Matkivsʹkyy S.V. Tekhnolohiyi ulovl?uvannya tekhnohennoho dioksydu vuhletsyu ta perspektyvy yoho utylizatsiyi u vysnazhenykh naftohazovykh rodovyshchakh. Naftohazova enerhetyka. 2021. No. 2(36). P. 31-41 https://doi.org/10.31471/1993-9868-2021-2(36)-31-41 [in Ukrainian]
[3] Matkivskyi S., Kondrat O., Burachok O. Investigation of the influence of the carbon dioxide (CO2) injection rate on the activity of the water pressure system during gas condensate fields development. Global Trends, Challenges and Horizons. 2020. P. 1-10. https://doi.org/10.1051/e3sconf/202123001011
[4] Kondrat R.M. Gazokondensatootdacha plastov. M.: Nedra. 1992. 255 p. [in Russian]
[5] Kryvulya S.V., Bikman YE.S., Kondrat O.R., Matkivsʹkyy S.V. Perspektyvy dorozrobky hazokondensatnykh rodovyshch iz znachnymy zapasamy retrohradnoho kondensatu: materialy Mizhnar. nauk.-prakt. konf. Ivano-Frankivsʹk. 8-9 hrudnya. 2020. P. 99-102. [in Ukrainian]
[6] Matkivskyi S., Khaidarova L. Increasing the Productivity of Gas Wells in Conditions of High Water Factors. Eastern Europe Subsurface Conference. 2021. Р. 1-16 https://doi.org/10.2118/208564-MS
[7] Boyko V.S., Kondrat R.M., Yaremiy- chuk R.S . Dovidnyk z naftohazovoyi spravy. K.: Lʹviv. 1996. 620 p. [in Ukrainian]
[8] Martynova M.A., Stepanova G.S., Kachalov O.B., Rasizade YA.M. Izvlecheniye vypavshego kondensata na pozdney stadii razrabotki gazokondensatnogo mestorozhdeniya. Gazovaya promyshlennost. 1976. No 6. P. 31-33. [in Russian]
[9] Gurevich, G. R. Sposoby povysheniya kondensatootdachi plastov. Yezhegodnik «Itogi nauki i tekhniki». Seriya «Razrabotka neftyanykh i gazovykh mestorozhdeniy». 1985. Vol. 16. P. 132-184. [in Russian]
[10] Davidovskiy A., Abramochkin S., Lopatina N. Multiphase Gas-Condensate Metering Tests with Individual Fluid Properties Model. SPE Russian Petroleum Technology Conference. 2017. https://doi.org/10.2118/187753-MS
[11] Bikman Ye. Forecasting Hydrocarbon Production at Gas Condensate Fields Considering Phase Transformations of Reservoir Systems. SPE Eastern Europe Subsurface Conference. 2021. https://doi.org/10.2118/208562-MS
[12] Burachok O.V. Pidvyshchennya efektyvnosti vyluchennya vuhlevodniv na riznykh stadiyakh rozrobky hazokondensatnykh rodovyshch: dys. doctora philosofii. Ivano-Frankivsk, 2021. 247 p. [in Ukrainian]
[13] Zakirov S. N. Razrabotka hazovykh, hazokondensatnykh i neftekondensatnykh mestorozhdenij. М.: Struna, 1998. 628 p. [in Russian]
[14] Kondrat R. M., Kondrat O. R. Kompleksna tekhnolohiya zbilʹshennya vuhlevodnevyluchennya z vysnazhenykh hazokondensatnykh rodovyshch. Nauka ta innovatsiyi. 2005. No 5. P. 24-39. [in Ukrainian]
[15] Bikman Ye.S., Dyachuk V.V. Optymizatsiya system rozrobky hazokondensatnykh rodovyshch Ukrayiny z vysokym vmistom vuhlevodniv S5+ v plastovomu hazi. Problemy naftohazovoyi promyslovosti. 2006. No 3. P. 165– 168. [in Ukrainian]
[16] Zakirov S. N. Novyye printsipy i tekhnologii razrabotki mestorozhdeniy nefti i gaza / S. N. Zakirov, I. S. Zakirov, M. N. Batanova [i dr.]. M.-Izhevsk. CH. 1. 520 p. [in Russian]
[17] Leontyev I.A., Petrenko V.I., Rassokhin G.V. Ob effekte vymyvaniya kondensata plastovoy vodoy pri razrabotke gazokondensatnykh mestorozhdeniy. Gazovoye delo. 1968. No 3. P. 3-5. [in Russian]
[18] Matkivskyi S., Kondrat O. The influence of nitrogen injection duration at the initial gaswater contact on the gas recovery factor. EasternEuropean Journal of Enterprise Technologies. 2021. No 1(6 (109), P. 77–84. https://doi.org/10.15587/1729-4061.2021.224244
[19] Matkivskyi S., Burachok O. Impact of Reservoir Heterogeneity on the Control of Water Encroachment into Gas-Condensate Reservoirs during CO2 Injection. Management Systems in Production Engineering. 2022. Vol. 30. Iss. 1. P 62-68. https://doi.org/10.2478/mspe-2022-0008
[20] Peshkin M.A. Vytesneniye vypavshego kondensata otorochkoy uglevodorodnogo mitsellyarnogo rastvora. Gazovaya promyshlennost. 1977. No 2. P. 35-36. [in Russian]
[21] Ter-Sarkisov R.M. Ispol'zovaniye obogashchennogo gaza dlya povysheniya kondensatootdachi. Gazovaya promyshlennost. 1982. No 10. P. 26-28. [in Russian]
[22] Petrenko V.I., Il'chenko L.A., Dogot A.Ya. Faktory, vliyayushchiye na uglevodorodootdachu gazokondensatnykh mestorozhdeniy v slozhnykh geologicheskikh i termobaricheskikh usloviyakh. Razrabotka i ekspluatatsiya gazovykh i gazokondensatnykh mestorozhdeniy. 1988. No 9. 50 p. [in Russian]
[23] Basniyev K.S., Livada G.M., Soshnin N.M. Metod dobychi vypavshego v plaste kondensata na pozdney stadii razrabotki mestorozhdeniy. Razrabotka i ekspluatatsiya gazovykh i gazokondensatnykh mestorozhdeniy. 1973. No 12. P. 13-20. [in Russian]
[24] Matkivskyi S., Kondrat O. Studying the influence of the carbon dioxide injection period duration on the gas recovery factor during the gas condensate fields development under water drive. Mining of Mineral Deposits. 2021. Vol. 15. Iss. 2. P. 95-101. https://doi.org/10.33271/mining15.02.095
[25] Ter-Sarkisov R.M., Peshkin M.A. Primeneniye dvuokisi ugleroda dlya izvlecheniya vypavshego v plaste kondensata. Voprosy proyektir. i ekspl. mestorozhd. so slozhnym sostavom gaza. M.: VNIIgaz. 1983. P. 83-92. [in Russian]
[26] Ter-Sarkisov R.M. Novaya kontseptsiya vozdeystviya na gazokondensatnuyu zalezh'. Gazovaya promyshlennost. 1997. No 6. P. 16-18. [in Russian]
[27] Gritsenko A. I., Ter-Sarkisov R. M., Klapchuk O. V. [i dr.] Zakachka zhidkikh uglevodorodov v plast dlya povysheniya neftekondensatootdachi. Razrab. i ekspl. gaz. i gazokondens. mestorozhd. M: VNIIEgazprom.1980. No. 6. 39 p. [in Russian]
[28] Kondrat R. M., Marchuk Yu. V. Tekhnolohyya y tekhnyka ékspluatatsyy hazokondensatnykh skvazhyn v oslozhnennykh uslovyyakh. Razrabotka y ékspluatatsyya hazovykh y hazokondensatnykh mestorozhdenyy. 1989. No 7. 38 p. [in Russian]
[29] Burachok O. V., Pershyn D. V., Matkivskyy S. V., Bikman Ye. S., Kondrat O. R. Osoblyvosti vidtvorennya rivnyannya stanu hazokondensatnykh sumishey za umovy obmezhenoyi vkhidnoyi informatsiyi. Rozvidka ta rozrobka naftovykh i hazovykh rodovyshch. 2020. No 1(74). S. 82-88. https://doi.org/10.31471/1993-9973-2020-1(74)-82-88 [in Ukrainian]
[30] Burachok, O. V., Pershyn, D. V., Matkivskyy, S. V., Kondrat, O. R. Doslidzhennya mezhi zastosuvannya PVT-modeli “chornoyi nafty” dlya modelyuvannya hazokondensatnykh pokladiv. Mineralni resursy Ukrayiny. 2020. No 2. P. 43-48. https://doi.org/10.31996/mru.2020.2.4348 [in Ukrainian]