TY - JOUR

T1 - 西西伯利亚盆地北极油气区侏罗系-白垩系储集层气-水系统平衡模拟

AU - Anatolievich, Novikov Dmitry

N1 - Publisher Copyright: © 2022, The Editorial Board of Petroleum Exploration and Development. All right reserved.

PY - 2022/4/23

Y1 - 2022/4/23

N2 - To reveal the equilibrium state of oil and gas and water in a petroliferous basin with a high content of saline water, calculations of water-gas equilibrium were carried out, using a new simulation method, for the Arctic territories of the West Siberian oil and gas bearing province. The water-bearing layers in this area vary widely in gas saturation and have gas saturation coefficients (Cs) from 0.2 to 1.0. The gas saturation coefficient increases with depth and total gas saturation of the formation water. All the water layers with gas saturation bigger than 1.8 L/L have the critical gas saturation coefficient value of 1.0, which creates favorable conditions for the accumulation of hydrocarbons; and unsaturated formation water can dissolve gas in the existent pool. The gas saturation coefficient of formation water is related to the type of fluid in the reservoir. Condensate gas fields have gas saturation coefficients from 0.8 to 1.0, while oil reservoirs have lower gas saturation coefficient. Complex gas-water exchange patterns indicate that gas in the Jurassic-Cretaceous reservoirs of the study area is complex in origin.

AB - To reveal the equilibrium state of oil and gas and water in a petroliferous basin with a high content of saline water, calculations of water-gas equilibrium were carried out, using a new simulation method, for the Arctic territories of the West Siberian oil and gas bearing province. The water-bearing layers in this area vary widely in gas saturation and have gas saturation coefficients (Cs) from 0.2 to 1.0. The gas saturation coefficient increases with depth and total gas saturation of the formation water. All the water layers with gas saturation bigger than 1.8 L/L have the critical gas saturation coefficient value of 1.0, which creates favorable conditions for the accumulation of hydrocarbons; and unsaturated formation water can dissolve gas in the existent pool. The gas saturation coefficient of formation water is related to the type of fluid in the reservoir. Condensate gas fields have gas saturation coefficients from 0.8 to 1.0, while oil reservoirs have lower gas saturation coefficient. Complex gas-water exchange patterns indicate that gas in the Jurassic-Cretaceous reservoirs of the study area is complex in origin.

KW - Arctic petroleum province

KW - Hydrocarbon accumulations

KW - Jurassic-Cretaceous oil reservoir

KW - Water-gas system

KW - West Siberia

UR - http://www.scopus.com/inward/record.url?scp=85129408063&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/533bc09a-440f-3e3f-acc1-f467c5dffe18/

U2 - 10.11698/PED.2022.02.10

DO - 10.11698/PED.2022.02.10

M3 - статья

AN - SCOPUS:85129408063

VL - 49

SP - 319

EP - 329

JO - Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development

JF - Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development

SN - 1000-0747

IS - 2

ER -