Characteristics and formation mechanism of low permeability sandstone reservoirs
Online published: 2012-06-20
The cores and thin sections were applied to study the characteristics and formation mechanism of low permeabi lity sandstone reservoirs. The low permeability sandstone reservoirs are characterized by low compositional and textural maturity, localized pore radius, poor reservoir properties, high pressure-sensitivity, probably welldeveloped fracture systems and strong heterogeneity. By analyzing the formation mechanism, this paper suggested that the genesis of low permeability sandstone reservoirs is intently related to sedimentation, diagenesis and tectonism that have occurred. Sedimentation is thought to be the most fundamental factor for the formation of low permeability sandstone reservoirs, diagenesis has dual effects on the physical properties, and the fractures formed by tectonism served as the main flowing path.
REN Haoran , WANG Huazhong , HUANG Guanghui . Characteristics and formation mechanism of low permeability sandstone reservoirs[J]. Lithologic Reservoirs, 2012 , 24(3) : 56 -60 . DOI: 10.3969/j.issn.1673-8926.2012.03.011
/
〈 |
|
〉 |