摘要
利用岩心观察、薄片鉴定等技术,对桩海地区中生界火成岩储层进行综合分析。结果表明:中生界火成岩可分为3类10种,以中性火成岩为主;储集空间类型分为原生孔隙和次生孔隙,共2类7种,以次生孔隙为主;储层非均质性较强,为中低孔、低渗、特低渗储层;储集空间的形成和演化经历了原生储集孔隙形成、风化溶蚀、埋藏构造断裂及烃源岩有机质成熟4个阶段,主要受岩性、岩相、构造应力作用与风化淋滤、次生矿物充填与压实作用等因素的综合影响。分析认为,有利相带和不利相带边缘控制区、构造活跃区、不整合面附近的区域均为油气成藏有利区带。
Comprehensive analysis is made on Mesozoic igneous reservoir in Zhuanghai area based on core observation,thin section identification and other technologies. The results show that( 1) the Mesozoic igneous rocks can be classified into 3 categories with10 types,represented by intermediate igneous rock;( 2) the reservoir space can be classified into primary pores and secondary pores( dominative),totally in 2 categories with 7 types;( 3) the reservoir is featured by strong heterogeneity,middle- low porosity,low- permeability and ultra- low permeability; and( 4) the reservoir space was formed and evolved in 4 stages,including primary reservoir space formation,weathering and corrosion,buried structure rupture and organic matter maturity in source rock,jointly influenced by lithology,lithofacies,tectonic stress,weathering and leaching,secondary mineral filling,and compaction. The analysis indicates that hydrocarbon accumulation prospects include favorable facies- controlling zones,active tectonic zones,zones near unconformity and zones with large single layer thickness.
出处
《特种油气藏》
CAS
CSCD
北大核心
2014年第6期52-56,143,共5页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"渤海湾盆地精细勘探关键技术"(2011ZX05006-003)
关键词
储层特征
火成岩
控制因素
有利相带
中生界
埕岛—桩海地区
reservoir characteristics
igneous rock
controlling factor
favorable facies zone
Mesozoic
Chengdao-Zhuanghai area
