准噶尔盆地北三台凸起南斜坡石炭系火山岩储层特征及成藏模式  

Reservoir characteristics and reservoir forming model of Carboniferous volcanic rocks on the southern slope of Beisantai Uplift,Junggar Basin

作　　者：罗官幸 潘虹[1] 李世宏[1] 李婷[1] 杨雅琴 王丽[1] 顾开放 宋俊强 李莲庆 LUO Guanxing;PAN Hong;LI Shihong;LI Ting;YANG Yaqin;WANG Li;GU Kaifang;SONG Junqiang;LI Lianqing(Research Institute of Exploration and Development,PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;Xinjiang Development Hongye Energy Technology Company Limited,Karamay,Xinjiang 834000,China)

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]新疆发展宏业能源科技有限公司,新疆克拉玛依834000

出　　处：《东北石油大学学报》2024年第5期27-47,I0003,共22页Journal of Northeast Petroleum University

基　　金：中国石油天然气股份有限公司重大科技专项(2017E-0405)。

摘　　要：准噶尔盆地北三台凸起南斜坡石炭系内幕地层结构、储层岩性、物性及展布规律等成藏条件认识不清。基于岩心、测井和地震资料,采用井震资料结合和储层反演等方法,分析石炭系巴山组内幕旋回组合及储层特征;结合油源条件、优质储层分布及古构造特征,研究北三台凸起南斜坡石炭系火山岩成藏模式。结果表明:石炭系巴山组内幕可分为3个四级旋回,自下而上为巴一段、巴二段和巴三段,优势岩相集中分布于巴三段,以爆发相火山角砾岩、溢流亚相安山岩和玄武岩为主。岩性与岩相是决定火山岩储层原生储集空间发育程度的基础,储层距石炭系顶部的位置决定风化淋滤改造的强度;巴三段南部及东部火山口附近分别发育火山熔岩及火山角砾岩,溶蚀孔及构造缝相对发育,为优质储层发育区。石炭系巴山组成藏模式主要为上生下储“倒灌”成藏和本层侧向成藏。巴三段沉积时期,继承性的古隆起与优势岩相、成藏期次等匹配良好,是油气聚集成藏的有利条件。该结果为准噶尔盆地北三台凸起南斜坡石炭系内幕油藏勘探开发提供指导。In view of the unclear understanding of reservoir formation conditions such as inside formation structure,reservoir lithology,physical property and distribution law of Carboniferous system of the southern slope of Beisantai Uplift in Junggar Basin,this paper analyzes the inside cycle combination and reservoir characteristics of Carboniferous Bashan Formation from key factors such as lithology,reservoir space and rock based on core,well logging and seismic data.Combined with the distribution of oil source conditions,advantageous reservoir distribution and paleostructural characteristics,the hydrocarbon accumulation rules of inside Carboniferous volcanic reservoir in the south slope of Beisantai Uplift are revealed.The results show that the inside of the Carboniferous Bashan Formation can be divided into three quaternary cycles,which are the first member of the Bashan Formation,the second member of the Bashan Formation and the third member of the Bashan Formation.The dominant lithofacies are concentrated in the third member of Bashan Formation,mainly composed of explosive volcanic breccia,overflow subfacies andesite and basalt.Lithofacies is the basis of determining the development degree of the primary reservoir space of volcanic rock reservoir,and the location of the reservoir from the top of the Carboniferous system determines the intensity of the weathering leaching reform.The southern and eastern craters of the third member of Bashan Formation are the developing areas of high-quality reservoirs.The lithology is mainly lava and volcanic breccia which are relatively developed in solution holes and tectonic fractures respectively.The Bashan Formation reservoir model mainly consists of“backfilling”accumulation of upper and lower reservoirs and lateral accumulation of the reservoir.The paleouplift of the third member of Bashan Formation,the inheritable paleo-uplift is well matched with the dominant lithofacies and accumulation period,which is the favorable condition for oil and gas accumulation.The results prov

关 键 词：准噶尔盆地 北三台凸起 南斜坡 石炭系 巴山组 火山岩 内幕储层 储层特征 成藏模式 古隆起 

分 类 号：TE122.2[石油与天然气工程—油气勘探] P618.3[天文地球—矿床学]