准噶尔盆地北缘哈山构造带油气输导系统研究  

Study on Hydrocarbon Transport System in Kazan Tectonic Zone at North Margin of Junggar Basin

作　　者：王圣柱[1] 林会喜[1] 张奎华[1] 薛雁[1] 

机构地区：[1]中国石化胜利油田分公司,山东东营257000

出　　处：《特种油气藏》2015年第6期30-34,142,共5页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"碎屑岩层系大中型油气田富集规律与勘探关键技术"(2011ZX05002-002);中国石油化工股份有限公司科技重大攻关课题"哈山构造带成藏主控因素研究"(P13020)

摘　　要：准噶尔盆地北缘哈山构造带经历多期构造叠加改造,构造复杂,油气运聚规律不明确,极大地制约了油气勘探。以已发现的油藏为研究对象,通过地质结构解剖、运移路径识别与油气源精细对比,对不同构造单元的油气运移特征进行研究。结果表明,超剥带与推覆-冲断带分属不同的油气输导系统,具有不同的油气输导样式,建立了2类4种油气运聚模式:超剥带为玛湖凹陷远源供烃、"断-毯"横向输导、毯缘富集;推覆-冲断带为哈山近源供烃,"多断"联合垂向输导,近源富集,其中,西段推覆叠置区为"断-缝"网状输导,中段冲断叠加区为断砂阶梯输导,东段断褶变形区为断层优势输导。系统总结了输导系统类型及控藏作用,研究结果可对研究区的油气勘探具有借鉴作用。Because the Kazan tectonic zone at north margin of the Junggar Basin has experienced multiphasic tectonic superimposing transformation,the structure is complicated,and the hydrocarbon migration and accumulation rule is uncertain,which largely restrict the petroleum exploration. In this paper,taking the discovered oil reservoir as the study object,by means of geologic framework anatomy,migration path identification and hydrocarbon source fine correlation,we studied the hydrocarbon migration features of different tectonic units. The study results showed that the overlap- denudation zone and the overriding- thrust belt belonged to different hydrocarbon transport systems,and had different hydrocarbon transport patterns,as a result,2 types of( 4 kinds) hydrocarbon migration and accumulation patterns were built: as for the overlap- denudation zone,hydrocarbon was supplied from the distal Mahu Sag,transported laterally through ' fault- blanket',and concentrated at the margin of the blanket; as for the ' overriding- thrust belt',hydrocarbon was supplied from the proximal Kazan tectonic zone,transported vertically through ' multiple faults',and concentrated near source,among which,the overriding superimposition area at west section belonged to ' fault- fracture' reticular transport,the thrust superimposed area at middle section belonged to fault- sand step transport,and the fault fold deformed area at east section belonged to fault dominated transport. In addition,this paper systematically summed up the transport system types and their reservoir controlling actions. The study results can play a reference role in the petroleum exploration of the study area.

关 键 词：地质结构 输导模式 地化示踪 超剥带 推覆-冲断带 哈山地区 

分 类 号：TE121.1[石油与天然气工程—油气勘探]