辽东湾凹陷石油运聚成藏过程中运载层残留油量计算关键参数的求取

doi:10.11743/ogg20090403

Abstract

Abstract:

The 1st and 2nd member of the Paleogene Shahejie Formation (E3s¹ and E3s²) in the Liaodong Bay depression were taken as examples.We performed geologic and statistical analyses on the residual hydrocarbons and physical properties of the reservoirs.Based on the characteristics of residual hydrocarbons inside and outside the hydrocarbon kitchen and in combination with the relationship between buoyance of oil column in carrier beds and capillary pressure of pores,we determined the height of residual oil column and calculated the amount of residual oil in carrier beds.The results show that the amount of residual oil range from 184 to 259 million tons in the carrier beds of E3s¹ and E3s² in the Liaodong Bay depression,amounting to 7.4%-10.4% of the total hydrocarbon expulsion.Residual hydrocarbon in reservoirs is the main loss of hydrocarbon in the process of secon-dary migration.The key parameters for calculating residual oil have great impact on the accuracy of prediction.

Key words: lower limit of porosity, oil migration-accumulation range, height of residual oil column, amount of residual oil, Liaodong Bay

CLC Number:

TE122.1

Tian Lixin, Wu Li, Jiang Zhenxue, Zhou Jingjing, Yao Leilei. Method for obtaining key parameters for calculating residual oil amount in carrier beds after oil migration and accumulation in the Liaodong Bay Depression[J]. Oil & Gas Geology, 2009, 30(4): 405-411.

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Method for obtaining key parameters for calculating residual oil amount in carrier beds after oil migration and accumulation in the Liaodong Bay Depression

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