Occurrence State and Time-Shift Characteristics of Residual Oil in Low-Permeability Reservoirs After Long-Term Waterflooding in Changqing Oilfield

Occurrence State and Time-Shift Characteristics of Residual Oil in Low-Permeability Reservoirs After Long-Term Waterflooding in Changqing Oilfield

This study focuses on a low-permeability sandstone reservoir in the Changqing Oilfield, aiming to elucidate the formation mechanism and occurrence state of residual oil during late-stage waterflooding development, thereby providing theoretical guidance for refined residual oil recovery. By integrati...

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Bibliographic Details
Main Authors: Yangnan Shangguan, Boying Li, Chunning Gao, Junhong Jia, Yongqiang Zhang, Jinghua Wang, Tao Xu
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Energies
Subjects:
digital core
pore structure
flow simulation
micro water–oil displacement
remaining oil distribution
Online Access:https://www.mdpi.com/1996-1073/18/8/2001
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