Hydrocarbon transport capacity of fault-sandstone configuration of Ed2+3 members in Liuchu area of Raoyang Sag and its relationship with oil and gas enrichment, Bohai Bay Basin#br#

doi:10.3969/j.issn.1672-7703.2021.02.007

Abstract

Abstract: As the main pathway of hydrocarbon migration, the fault-sandstone configuration transport system controls the distribution
of oil and gas reservoirs. In this paper, the dominant migration pathway of faults and the distribution of interconnected
sand bodies are depicted based on 3D seismic and well data, and the rule of oil and gas distribution of the 2nd and 3rd members of Dongying Formation (Ed2+3) in Liuchu area are studied. From the relationship between hydrocarbon transport system of
fault-sandstone configuration of Ed2+3 members and the underlying source rock of 1st member of Shahejie Formation (Es1), hydrocarbon transport capacity of fault-sandstone configuration and its relationship with oil and gas enrichment is studied combined with oil and gas distribution in Ed2+3 members. The result shows that a large number of sand bodies are developed on both sides of the faults of Ed2+3 members in Liuchu area, and only the proper configuration of faults and the interconnected sand bodies can form fault-sandstone transport system for hydrocarbon migration from source rock of Es1 member to reservoirs of Ed2+3 members.The fault-sandstone configuration with strong hydrocarbon transport capacity in Liuchu area is relatively developed, mainly distributed in the northern area, and followed by the fault-sandstone configuration with poor hydrocarbon transport capacity, which is mainly in the southeastern region. The fault-sandstone configuration with medium hydrocarbon transport capacity is the least developed and distributed in the middle, eastern and western regions.

CLC Number:

TE112.12

Han Gang, Cao Cheng, Zhang Wenjing, Cao Yang, Wang Shuheng, Bao Li. Hydrocarbon transport capacity of fault-sandstone configuration of Ed2+3 members in Liuchu area of Raoyang Sag and its relationship with oil and gas enrichment, Bohai Bay Basin#br#[J]. China Petroleum Exploration, 2021, 26(2): 69-76.

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