现代地质2013，Vol.27Issue(1)：208-216,9.
松辽盆地梨树断陷营城组低渗透储层成因机制
Genetic Mechanism of Low-permeability Reservoir of Yingcheng Formation in Lishu Fault Depression, Songliao Basin
摘要
Abstract
The main rock types of Yingcheng Formation in Lishu Fault Depression of Songliao Basin are arkose and lithic arkose. The result of reservoir physical property test showed that reservoir physical properties are poor in this area, which have characteristics of low to ultra-low porosity and special low to super-low permeability. This paper analyzed the low-permeability reservoir's characteristics and its property controlling factors by utilization of core observation, thin section identification, image analysis, mercury testing and other technical methods. The main reservoir pore spaces are primary, secondary dissolution pores and a small amount of mixed pores. The diagenetic types of the reservoir are compaction, dissolution, cementation, metasomatism, and so on, and the diagenetic evolution sequence is compaction→feldspar and debris dissolution→carbonate cementation→carbonate dissolution. Thus the sedimentation and diagenesis coupling relationship determines the quality of reservoir properties. On the basis of the above, the inversion method of back stripping was used to recover the reservoir properties and its evolution history during the geological time under the constraint of reservoir diagenesis evolution sequence and reservoir pore structure. The results show that the low-permeability reservoir's physical properties are fundamentally controlled by deposition, moreover, the low-permeability characteristics are predominated by compaction and enhanced by cementation.关键词
梨树断陷/营城组/低渗透储层/成因机制/反演回剥法Key words
Lishu Fault Depression/ Yingcheng Formation/ low-permeability reservoir/ genetic mechanism/ inversion method of back stripping分类
能源科技引用本文复制引用
葸克来,操应长,蔡来星,周磊,杨春宇,王健..松辽盆地梨树断陷营城组低渗透储层成因机制[J].现代地质,2013,27(1):208-216,9.基金项目
国家科技重大专项项目(2011ZX05009-003) （2011ZX05009-003）
中国石油大学(华东)研究生自主创新科研计划项目(12CX06012A). （华东）
