PVT-Properties Analysis of Reservoir Gases of the Yurubcheno-Tokhom Oil and Gas Accumulation Zone of the Baikit Oil and Gas Region Based on Regional Trends
https://doi.org/10.18599/grs.2024.3.12
Abstract
Studies of changes in the physical and chemical properties of reservoir gas and gas cap condensate of an extremely saturated reservoir oil and gas condensate system depending on the conditions of deposits (reservoir pressures and temperatures) were carried out. The research was based on the results of laboratory analyses of 29 recombined gas samples taken from wells of the Yurubcheno-Tokhom oil and gas accumulation zone (YTZ). The main pattern of changes in the properties of gas condensates of the gas caps of the UTZ was revealed as a function of reservoir pressure. There was practically no correlation between PVT-properties determined from recombined reservoir gas samples and physical and chemical properties determined from wellhead condensate samples. A correlation between reservoir pressure and potential C5+higher content in reservoir gas (PCС5+higher), reservoir pressure and condensate recovery coefficient was revealed. Based on this dependencies, it is possible to carry out conditional estimation of the gas condensate resources of gas caps – the potential content of C5+higher and condensate recovery coefficient for new, smal oil and gas condensate fields of the Yurubcheno-Tokhom oil and gas accumulation zone.
Keywords
PVT-properties of gas caps,
gas condensate,
reservoir gas,
potential C5+ content (PCC5+higher),
condensate recovery coefficient,
Yurubcheno-Tokhom zone of oil and gas accumulation
Supporting agencies: The authors expresses their gratitude to their colleagues from RN-KrasnoyarskNIPIneft and the reviewers for their valuable comments and suggestions that contributed to the improvement of the work.
About the Authors
M. V. Gagina
RN-KrasnoyarskNIPIneft
Russian Federation
Russian Federation
Milyausha V. Gagina – Chief specialist (PVT-properties), Department of Fluid Properties and Well Testing
65D, 9 May st., Krasnoyarsk, 660098
V. G. Volkov
RN-KrasnoyarskNIPIneft
Russian Federation
Russian Federation
Vladimir G. Volkov – Deputy General Director of Geology and Development, Cand. Sci. (Physics and Mathematics)
65D, 9 May st., Krasnoyarsk, 660098
O. A. Gogebashvili
RN-KrasnoyarskNIPInef
Russian Federation
Russian Federation
Oleg A. Gogebashvili – Head of the Department of Fluid Properties and Well Testing
65D, 9 May st., Krasnoyarsk, 660098
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Review
For citations:
Gagina M.V., Volkov V.G., Gogebashvili O.A. PVT-Properties Analysis of Reservoir Gases of the Yurubcheno-Tokhom Oil and Gas Accumulation Zone of the Baikit Oil and Gas Region Based on Regional Trends. Georesursy = Georesources. 2024;26(3):109-115. (In Russ.) https://doi.org/10.18599/grs.2024.3.12
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