新疆北部石炭系火山岩储层特征、演化及成因模式  

Charateristics,evolution and genetic modes of Carboniferous volcanic reservoir in northern Xinjiang,China

作　　者：董雪梅[1] 查明[2] 蒋宜勤[1] 陈中红[2] 范小秦[1] 张勇[2] 陈国军[1] 

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [2]中国石油大学(华东)地球科学与技术学院,山东青岛266580

出　　处：《西安石油大学学报（自然科学版）》2013年第4期8-16,6,共9页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家"973"项目(编号:2011CB201101);中石油新疆油田分公司重大项目"新疆北部石炭系火山岩油气地质理论;核心技术与勘探重大突破"

摘　　要：通过岩心观察、薄片鉴定,对新疆北部石炭系火山岩储集空间类型进行划分.依据火山岩岩性岩相分类及火山岩储层孔隙类型、演化模式以及储层物性控制因素的差异,建立了火山岩储层孔隙演化模式.依据后生成岩作用的不同,建立了火山岩储层成因模式.结果表明:该区火山岩储集空间可以划分为4种原生孔隙、4种次生孔隙和4种裂缝类型.火山岩可归纳为4种:基性-中性溢流相的玄武岩和安山岩、中酸性溢流相的英安岩和流纹质英安岩、爆发相的火山角砾岩和爆发相的凝灰岩.分别建立了基性-中性溢流相的玄武岩、安山岩储层和爆发相火山角砾岩储层孔隙演化模式.建立了风化壳型火山岩储层和内幕型火山岩储层2种火山岩储层的成因模式.这2类储层早期都经历了成岩作用阶段的冷凝作用、火山活动后期的热液作用以及火山喷发间歇期的表生作用,后期由于构造作用、埋藏作用的不同产生分化.The reservoir space of Carboniferous volcanic in northern Xinjiang is classified according to core observation and thin section identification.The pore evolution modes of the volcanic reservoir are established by the difference in the lithology,lithofacies, pore types,evolution modes and property control factors of the volcanic reservoir,and its genetic modes are also established according to the difference in epigenetic diageneses.It is shown that,the reservoir space of the volcanic can be classified into 4 types of primary pore,4 types of secondary pore and 4 types of fissure;the volcanic reservoir is classified into 4 types according to different genetic modes;basic-neutral overflow basalt and andesite,intermediate-acid overflow dacite and rhyolitic dacite,erupting volcanic breccias and erupting tuff.The reservoir pore evolution modes of basic-neutral overflow basalt and andesite and erupting volcanic breccias are established respectively,and the genetic modes of weathering-crust volcanic rock reservoir and insider-type volcanic reservoir.Those two types of volcanic rock reservoirs all early experienced the condensation in the diagenesis stage,the hydrothermalism in the late stage of volcanic activity and the hypergenesis in the intermission stages of volcanic eruption in the stage,and there is difference between them because of different tectonism and buried diagenesis in the later stage.

关 键 词：火山岩 孔隙演化模式 储层成因模式 石炭系 新疆北部 

分 类 号：TE121[石油与天然气工程—油气勘探]