中国石油大学学报（自然科学版）2017，Vol.41Issue(5)：30-40,11.DOI:10.3969/j.issn.1673-5005.2017.05.004
松辽盆地长岭断陷营城组火山熔岩流单元储层特征及量化表征
Characteristics and quantitative evaluation of reservoir in lava flow units in the early Cretaceous Yingcheng Formation in Changling Depression of Songliao Basin
摘要
Abstract
The outcrops and the shallow wells of the Mesozoic volcanic rocks in the margin of Songliao Basin and the adja-cent regions were studied to infer the shape, inner structures and reservoir characteristics of the associated lava flow units. A series of data were used in the study, including the core data, well logging, casting thin sections, SEM date of 28 wells, as well as the seismic sections in the Changling Depression. The results are as follows: the lava flows can be divided into three types, including lava dome, tabular flow and braided flow based on the envelope shapes; the vertical successions of lava flow units can be classified into five zones, the top vesicle zone, the rhythmic vesicle zone, the sparse vesicle zone, the dense zone and the basal vesicle zone; from the top vesicle zone to the basal vesicle zone, the surface porosity of the primary pores decreases in the beginning and increases afterwards, and the surface porosity of the secondary pores generally decreases, and the surface porosity of fissures generally increases. Logging porosity analyses show that there are more res-ervoirs in basic braided lava flow units than tabular lava flow units and the lava domes. This study provides insights to the distribution of volcanic reservoirs in Songliao Basin, and is useful for the refined volcanic reservoir description.关键词
松辽盆地/火山岩气藏/熔岩流单元/储层特征Key words
Songliao Basin/volcanic gas reservoir/lava flow units/reservoir characteristics分类
能源科技引用本文复制引用
任宪军,单玄龙,衣健..松辽盆地长岭断陷营城组火山熔岩流单元储层特征及量化表征[J].中国石油大学学报（自然科学版）,2017,41(5):30-40,11.基金项目
国家自然科学基金项目(41430322) （41430322）
