Abstract:

This paper, based on the drilling, logging, and thin sections of cores, studies the features and production of Sha-3 Member Reservoir of Western depression in Liaohe basin. The Sha-3 Member reservoir is chiefly turbidite, which can be classified into three sub-members, Lianhua oil-bearing bed, Dalinghe oil-bearing bed and Rehetai oil-bearing bed according to their lithology and sedimentation. The later both are the major reservoirs which are sandstone in lithology with clastic grains and low maturity, implying a near source and quick sediment. The petropysical features of reservoir, closely related to facies zone, are largely influenced by sedimentary zones, the maturity of clastic components, post-diagenesis, cementation and corrosion, etc.

Key words:

Liaohe basin; Sha-3 member; reservoir; sediment; lithology; petrophysical features

摘要：

利用钻井、测井、岩石薄片等资料对研究区沙三段砂岩储集层的展布特征及与产能的关系进行了深入的研究。沙三段储集层主要是浊积岩，按岩性组合和沉积演化等特征可分为莲花油层、大凌河油层和热河台油层3个亚段，其中后两者是主要储层；储集层的岩性主要是砂岩，碎屑颗粒成分及结构成熟度较低，反映了近源、快速沉积等特点；储层物性与相带密切相关，其影响因素主要有沉积相带、碎屑岩成分成熟度、后生成岩作用、胶结作用和溶蚀作用等。

关键词: 辽河盆地；沙三段；储集层；沉积；岩性；物性