摘要
对研究区南屯组有效储集层特征及其控制因素进行了研究。乌南次凹南屯组有效储集层以正常陆源碎屑岩为主,含较少凝灰质沉积岩类;南屯组有效储集层发育层段与次生孔隙发育层段具良好的对应关系,而南屯组储集层次生孔隙发育程度受众多因素影响,不整合面风化淋滤作用和有机酸溶蚀作用是控制有效储集层次生孔隙发育的主要因素,高结构成熟度的颗粒支撑作用是控制有效储集层原生孔隙发育的主要因素;自生黏土矿物包壳使弱压实作用对有效储集层未产生明显的不利影响;三角洲前缘沉积相带控制南屯组有效储集层的分布。
The results from laboratory study and comprehensive analysis show that the effective reservoir of Nantun formation in Wunan sub-sag of Hailaer basin is dominated by normal terrigenous clastic reservoir with some tuff sedimentary rocks.The developed sections and secondary porosity developed sections in this reservoir are of good corresponding relations.The development of secondary porosity is affected by many factors,for example,the weathering leaching on unconformity and organic acid dissolution are main control factors for the secondary porosity;the particle propping effect of high structural maturity is major control factors for the primary porosity;weak compaction and authigenic clay mineral shell are also favorable effects on the formation of effective reservoir,and the sedimentary facies of delta front controls the distribution of the Nantun effective reservoir.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2011年第5期461-463,共3页
Xinjiang Petroleum Geology
关键词
海拉尔盆地
乌南次凹
南屯组
有效储集层
控制因素
深层次生孔隙
Hailaer basin
Wunan sub-sag
Nantun formation
effective reservoir
controlling factor
deep secondary porosity
