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

发布时间：2018-01-06 23:00

本文关键词：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　出处：《中国石油大学学报(自然科学版)》2017年05期 　论文类型：期刊论文

【摘要】：依据松辽盆地盆缘及邻区中生代火山岩露头剖面和剖面浅钻,长岭断陷28口钻井岩心、测井、铸体薄片和扫描电镜资料,并结合地震解解释剖面,对该区中生代熔岩流单元形态、内部结构和储层特征进行研究。结果表明:熔岩流单元根据外部形态可分为熔岩穹丘、板状熔岩流和辫状熔岩流3类;垂向序列可分为顶部气孔带、韵律性气孔带、稀疏气孔带、致密带和底部气孔带5种孔隙带;从熔岩流单元顶部气孔带到底部气孔带,原生孔隙面孔率先减小后增加,次生孔隙面孔率始终减小,面缝率始终增加;辫状熔岩流储层物性最优,其次为板状熔岩流,再次为熔岩穹丘;该研究有利于更加深入地认识松辽盆地深层火山岩储层空间发育规律,并有助于对火山岩储层进行精细刻画。
[Abstract]:According to the outcrop profile and profile of Mesozoic volcanic rocks in the basin margin and adjacent area of Songliao Basin, 28 drilling cores, logging, casting sheet and scanning electron microscope data of Changling fault depression are used to interpret the profile. The morphology, internal structure and reservoir characteristics of the Mesozoic lava flow units in this area are studied. The results show that the lava flow units can be classified into three types according to the external morphology: the lava dome, the plate lava flow and the braided lava flow. The vertical sequence can be divided into five types: top stomatal zone, rhythmic stomatal zone, sparse stomatal zone, compact zone and bottom stomatal zone. From the top of the lava flow unit to the bottom of the pore zone, the primary pore face decreases first and then increases, the secondary pore porosity always decreases and the surface fracture rate increases. The reservoir physical properties of braided lava flow are the best, followed by slab lava flow and again lava dome; This study is helpful to understand the spatial development of deep volcanic reservoir in Songliao Basin and to depict the volcanic reservoir in detail.
【作者单位】：吉林大学地球科学学院;中国石化东北油气分公司勘探开发研究院;
【基金】：国家自然科学基金项目(41430322)
【分类号】：P618.13
【正文快照】： 学报(自然科学版),2017,41(5):30-40.REN Xianjun,SHAN Xuanlong,YI Jian.Characteristics and quantitative evaluation of reservoir in lava flow units in the ear-ly Cretaceous Yingcheng Formation in Changling Depression of Songliao Basin[J].Journal of China Uni

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