通化盆地三棵榆树断陷下白垩统鹰嘴砬子组储层特征  

Reservoir characteristics of Lower Cretaceous Yingzuilazi Formation in Sankeyushu fault depression of Tonghua Basin

作　　者：刘国东 LIU Guo-dong(Institute of Exploration and Development,Jilin Oilfield Company,PetroChina,Songyuan 138000,Jilin,China)

机构地区：[1]中国石油吉林油田公司勘探开发研究院,吉林松原138000

出　　处：《世界地质》2020年第3期610-616,共7页World Geology

基　　金：国家科技重大专项(201705001-002)。

摘　　要：以钻井取芯和露头资料为基础,结合铸体薄片、扫描电镜、压汞和核磁等多种测试手段,对三棵榆树断陷下白垩统鹰嘴砬子组储层特征开展了系统研究。结果表明:三棵榆树断陷鹰嘴砬子组为火山堰塞湖环境,火山碎屑沉积岩和火山熔岩储层共存,主要储集空间类型为原生残余孔隙、次生溶蚀孔隙和裂缝,孔隙度为4%~10%、渗透率<0.2×10-3μm2、喉道半径为0.03~0.33μm,储层非均质性较强,沉积微相类型、岩性、成岩作用和裂缝发育程度对储层物性具有显著影响。The reservoir characteristics of Lower Cretaceous Yingzuilazi Formation in Sankeyushu fault depression are systematically studied based on coring and outcrop data,combining casting thin sections,scanning electron microscope,mercury intrusion,nuclear magnetic and other testing methods.The results show that the Yingzuilazi Formation in Sankeyushu fault depression was deposited in volcanic barrier lake environment,with coexisting pyroclastic sedimentary rocks and volcanic lava reservoirs.The main reservoir space consists of primary residual pores,secondary dissolution pores and fractures,with porosity of 4%~10%,permeability of less than 0.2×10-3μm 2,throat radius of 0.03~0.33μm.The heterogeneity is strong and the reservoir is greatly influenced by sedimentary microfacies type,lithology,diagenesis and the degree of development of fracture.

关 键 词：通化盆地 三棵榆树断陷 鹰嘴砬子组 储层特征 物性影响因素 

分 类 号：P618.13[天文地球—矿床学]