Prospects of long-term development of Shebelynka gas-condensate deposit in conditions of stocks recovery
Abstract
The work is aimed to study the gas recovery stabilization prospects in Ukraine on the existing deposits due to renewable processes concerning gas reserves. The article reviews and analyzes the main results in the Shebelynka gas condensate field (GCF) development from the point of view of its water flooding.It is possible to restore the gas reserves in the assumption that they are being developed due to the gas flow from deep horizons. In detail, all factors are taken into consideration, which influences the formation pressure in the process of deposits development. The work presents analysis of the water pressure system in the Shebelinka GCF, the results of the calculation of reserves of edge water (water pressure system of the field is limited), investigates the dynamics of water flooding (intrusion of water in gas deposits) and the role of capillary forces in slowing down the advance of the water front. It was shown that water flooding practically does not affect the development of gas depletion, and the reservoir pressure-decline rate is slowing down both under the influence of known factors and due to the flow of gas through tectonic disruptions, especially in the core deposit. It is proved that when the annual gas consumption is reduced to 1800-1900 million 3, it will be fully compensated by the crossflow of gas. The graphic forecast of gas recovery till 2040 is presented in variants without compressor and compressor opening since 2019, taking into consideration the reserves stock.
It has been calculated that with introduction of the planned new compressor station at Shebelinka GCF annual gas production in the period of 2020-2040 will be maintained at 2.4-2.1 billion cubic meters and additional gas extraction for the period 2019-2036 is - 6.5 billion m3.
During the development of the field, depression between the main reservoir and the deep horizons of carbon will increase, that might increase the volume of gas crossflow and accelerate the degassing of the Earth, taking into account presence of macro- and micro-tectonic faults.
Considering the possibility of a long-term development in the Shebelinka GCF, it is necessary to pay special attention to the fund of wells, its updating, repair or use as a means for receiving the heat from the Earth.
The phenomenon of restoration of gas reserves at the Shebelinka GCF, which was established by researches, is promising for other deposits of Ukraine and needs further special researches, on separate objects.
Object of research: Shebelinka gas condensate field. Gas extraction and processes for maintaining reservoir pressure, including through the gas crossflow of gas from the deep horizons of tectonic disturbances.
Subject of the study: Analysis and forecast of gas production in the future for various options for development, both compressor and non-compressor exploitation of the deposit, taking into consideration maintenance of reservoir pressure and stock reserves.
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References
Zakirov S. N. et al. (2009). Materials of the International Scientific Seminar "Theory and practice of application of enhanced oil recovery methods", Moscow. 2, 157-161.
Fesenko Yu.L. et al. (2009) Status and prospects of development of Shebelinsky gas condensate field. Naftova i gazova promy`slovist`, 5-6, 24-28.
Kry`vulya S.V., Tereshhenko V.O. (2012). Features of the geological structure, stock build-up and the development of large deposits in the deposits of P1-C3 in the DDD on the example of Shebelinsky gas condensate field. Visny`k XNU, 1033, 15-82.
Kry`vulya S.V. (2014). Criteria for the exploration of large hydrocarbon deposits in the lower Permian-Carboniferous deposits of the Dnipro-Donets depression. Monograph. Kharkiv, «TO Eksklyuzy`v», UkrNDIgaz, NTU «KhPI», 173.
Vdovy`chenko A.I. et al. (2016). Problems of stockpiling and oil and gas production in Ukraine due to their recov-ery. Nafta i gaz. Nauka – Osvita – Vy`robny`cztvo: shlyaxy` integraciyi ta innovacijnogo rozvy`tku: materialy` Vseukrayins`kogo nauk.-texnich. konf. (m. Drogoby`ch, 10-11 bereznya 2016 r.), TzOV «Trek – LTD», 174.
Yaremіychuk R. S. (2015). Oil Resuscitation. Neftyanoye obozreniye «Terminal», 2, 44-49.
Yusupova L.F., Gutorov A.Yu. (2011). On the question of sources of origin and ways of oil migration during the for-mation of deposits in the territory of the republic of Tatarstan. Materialy 38-y nauchno-tekhnicheskoy konferentsii molodykh uchenykh. aspirantov i studentov. Ufa, UGNTU, 2, 279.
Rud`ko G. I. et al. (2014). Energy resources of the geological environment of Ukraine (state and outlook). Cher-nivci, Bukrek, 520.
Lukin O.Yu. (2014). Maintenance of Ukraine's own natural gas: problem aspects. According to the materials of the scientific report at the session of the Presidium of the National Academy of Sciences of Ukraine, July 2, 2014, Visny`k NAN, 9, 16–22.
Fyk I. M. et al. (1989). On the issue of flooding of Shebelinskoye field. Neftyanaya i gazovaya promyshlennost, 4, 26–29.
Mentux I.O. (2017). Geological foundations of the prospect of developing the Shebelinsky deposit. Geology of oil and gas: materials of the inter-university scientific and practical conference of students and postgraduates (Kharkiv, May 16-17, 2017), V. N. Karazin Kharkiv National University, 98.
Fyk I. M. (2018). The state of flooding of the Shebelin gas condensate field. Actual issues of the Earth sciences: the view of the youth: materials of the II Scientific conference of students and postgraduates (Kharkiv, April 12-13, 2018), «Sty`l`-Izdat», 36–40.
Kanalin V.G. (1997). Oil and gas geology and hydrogeology. Moscow. OAO ''Izdatelstvo "Nedra", 366.
Bykov N.E et al. (1981). Oilfield geology directory. Moscow, Nedra, 525.
Abyelyencev V. M. et al. (2014) Geological conditions for the extraction of residual stocks and exploration of hy-drocarbon deposits in the northern floodplain zone of the Dnipro-Donets'k depression: monograph. Kharkiv. V.N. Karazin Kharkiv National University, 192.
Bojko V.S. (1996). Oil and Gas directory. Kiev; Lviv, 620.
Pirson S.D. (1961). The doctrine of the oil reservoir. Moscow, «Gostoptekhizdat», 670.
Masket M. (1953). Physical bases of oil production technology. Moscow, «Gostontekhizdat», 606.
Fyk I.M. (1981). Forecasting of residual gas saturation of the formation: PhD dis., Ivano-Frankivsk, 227.
Andersen P.O. et al. (2017). Improved modeling of gravity-aided spontaneous imbibition using momentum-equation-based relative permeabilities. EAGE - 19th European Symposium on Improved Oil Recovery, 24-27 April, Stavanger, Norway [https://doi.org/10.3997/2214-4609.201700303].
Zhou X., Morrow N. R., Ma S. et al. (2018). Interrelationship of Wettability, Initial Water Saturation, Aging Time, and Oil Recovery by Spontaneous Imbibition and Waterflooding. SPE Journal, 5 (2), 199–207 [https://doi.org/10.2118/62507-PA, SPE-62507-PA].
Chepil` P. M. (2008). The second life of oil and gas deposits in Ukraine is a myth or a reality. Mineral`ni resursi Ukrayiny`, 2, 37-38.
Zaritskiy A.P. et al. (2011). Perspectives of the main and deep zones of oil and gas accumulation in the Dniprope-trovsk-Donetsk cavity. The issue of development of the gas industry in Ukraine: a collection of scientific works. Vy`pusk XXXIX, Kharkiv, UkrNDIgaz, 11-17.
Fyk I. M. (2018). Reserve of reserves at Shebelinsky gas condensate field // Geology of oil and gas: materials of the all-Ukrainian scientific and practical conference of students and postgraduates (Kharkiv, April 19-20, 2018). Kharkiv, V. N. Karazin Kharkiv National University, 27-31.
